Drop redundant PROT_NONE tracking in reserve paths for Linux (#122 )

src: platform: Linux: Drop redundant PROT_NONE tracking in reserve paths * Some UE4 games, such as The Pathless, reserve a 512 GiB virtual address range during libc startup. Tracking every 4 KiB page causes a long delay and is unnecessary since the range is already PROT_NONE, and untracked pages are treated as NoAccess. Signed-off-by: Claxten <claxten10@gmail.com>
Fix vertex buffer ranges crossing memory mappings
2026-08-03 11:23:49 +00:00 · 2026-07-30 00:00:21 +02:00 · 2026-07-29 21:05:24 +02:00 · 2026-07-29 21:05:24 +02:00 · 2026-07-29 21:05:24 +02:00 · 2026-07-29 18:47:26 +02:00
26 changed files with 654 additions and 363 deletions
@@ -432,11 +432,6 @@ uint64_t SysVirtualReserveAligned(uint64_t address, uint64_t size, uint64_t alig

 	pthread_mutex_lock(&g_virtual_mutex);
 	record_alloc(ret_addr, size);
-	uintptr_t page_start  = ret_addr >> 12u;
-	uintptr_t page_end    = (ret_addr + size - 1) >> 12u;
-	for (uintptr_t page = page_start; page <= page_end; page++) {
-		(*g_protects)[page] = PROT_NONE;
-	}
 	pthread_mutex_unlock(&g_virtual_mutex);

 	return ret_addr;
@@ -470,11 +465,6 @@ bool SysVirtualReserveFixed(uint64_t address, uint64_t size) {
 	if (ptr != MAP_FAILED) {
 		pthread_mutex_lock(&g_virtual_mutex);
 		record_alloc(ret_addr, size);
-		uintptr_t page_start  = ret_addr >> 12u;
-		uintptr_t page_end    = (ret_addr + size - 1) >> 12u;
-		for (uintptr_t page = page_start; page <= page_end; page++) {
-			(*g_protects)[page] = PROT_NONE;
-		}
 		pthread_mutex_unlock(&g_virtual_mutex);

 		return true;
@@ -38,10 +38,51 @@ public:
 	                                    bool downloaded) noexcept;
 	[[nodiscard]] bool InvalidateRegion(uint64_t vaddr, uint64_t size,
 	                                    PageFaultPhase phase) noexcept;
+	template <typename Flush>
+	void InvalidateRegion(uint64_t vaddr, uint64_t size, Flush&& on_flush) {
+		static_assert(std::is_invocable_v<Flush&>);
+		CheckNotInUploadCallback();
+		ValidateRange(vaddr, size);
+
+		const auto update_cpu_state = [this, vaddr, size] {
+			std::lock_guard             access(m_access_mutex);
+			std::vector<RegionManager*> managers;
+			Iterate<false>(vaddr, size, [&](RegionManager* manager, uint64_t, uint64_t) {
+				managers.push_back(manager);
+			});
+			std::vector<std::unique_lock<TrackingSpinLock>> locks;
+			locks.reserve(managers.size());
+			for (auto* manager: managers) {
+				locks.emplace_back(manager->lock);
+			}
+			const bool gpu_modified = Iterate<false>(
+			    vaddr, size, [](RegionManager* manager, uint64_t offset, uint64_t bytes) {
+				    return manager->IsModified<DirtySource::Gpu>(offset, bytes);
+			    });
+			if (gpu_modified) {
+				return true;
+			}
+			Iterate<false>(vaddr, size,
+			               [](RegionManager* manager, uint64_t offset, uint64_t bytes) {
+				               const auto changed = manager->ChangeState<DirtySource::Cpu, true>(
+				                   manager->GetCpuAddr() + offset, bytes);
+				               manager->ApplyProtection(changed, false);
+			               });
+			return false;
+		};
+
+		if (!update_cpu_state()) {
+			return;
+		}
+		std::forward<Flush>(on_flush)();
+		if (update_cpu_state()) {
+			EXIT("memory invalidation retained GPU-owned pages\n");
+		}
+	}
 	[[nodiscard]] bool InvalidateVirtualGpuWrite(PageFaultAccess access, uint64_t vaddr,
 	                                             uint64_t size, PageFaultPhase phase) noexcept;
-	void ValidateGpuDirtyPages(const RangeSet& dirty, uint64_t vaddr, uint64_t size,
-	                           const char* operation) const noexcept;
+	void               ValidateGpuDirtyPages(const RangeSet& dirty, uint64_t vaddr, uint64_t size,
+	                                         const char* operation) const noexcept;
 	void ValidateGpuDirtyOwnership(const RangeSet& dirty, uint64_t vaddr, uint64_t size,
 	                               const char* operation);

@@ -699,26 +699,6 @@ bool PageManager::IsMapped(uint64_t vaddr, uint64_t size) const noexcept {
 	return true;
 }

-bool PageManager::HasAnyMapping(uint64_t vaddr, uint64_t size) const noexcept {
-	if (g_in_fault_resolution || vaddr == 0 || size == 0 || vaddr >= ADDRESS_SIZE ||
-	    size > ADDRESS_SIZE - vaddr) {
-		return false;
-	}
-	const auto end = PageEnd(vaddr, size);
-	for (auto page_vaddr = PageStart(vaddr); page_vaddr < end; page_vaddr += PAGE_SIZE) {
-		auto* region = m_impl->FindRegion(page_vaddr);
-		if (region == nullptr) {
-			continue;
-		}
-		auto&     page = m_impl->GetPage(*region, page_vaddr);
-		SpinGuard lock(page.lock);
-		if (page.mappings != 0) {
-			return true;
-		}
-	}
-	return false;
-}
-
 bool PageManager::HasGpuAccess(uint64_t vaddr, uint64_t size, GpuAccess access) const noexcept {
 	if (access != GpuAccess::Read && access != GpuAccess::Write && access != GpuAccess::ReadWrite) {
 		FailFast("HasGpuAccess received an invalid GPU access mode");
@@ -1150,22 +1130,4 @@ bool PageManager::HandleFault(PageFaultAccess access, uint64_t fault_vaddr) noex
 	return true;
 }

-bool PageManager::HandleWriteRange(uint64_t vaddr, uint64_t size) noexcept {
-	if (g_in_fault_resolution || vaddr == 0 || size == 0 || vaddr >= ADDRESS_SIZE ||
-	    size > ADDRESS_SIZE - vaddr) {
-		return false;
-	}
-	const auto end = PageEnd(vaddr, size);
-	for (auto page_vaddr = PageStart(vaddr); page_vaddr < end; page_vaddr += PAGE_SIZE) {
-		if (!IsMapped(page_vaddr, 1)) {
-			continue;
-		}
-		const auto fault_vaddr = std::max(page_vaddr, vaddr);
-		if (!HandleFault(PageFaultAccess::Write, fault_vaddr)) {
-			return false;
-		}
-	}
-	return true;
-}
-
 } // namespace Libs::Graphics
@@ -41,7 +41,6 @@ public:
 	[[nodiscard]] uint64_t GetPageSize() const;
 	[[nodiscard]] bool     IsTracked(uint64_t vaddr) const noexcept;
 	[[nodiscard]] bool     IsMapped(uint64_t vaddr, uint64_t size) const noexcept;
-	[[nodiscard]] bool     HasAnyMapping(uint64_t vaddr, uint64_t size) const noexcept;
 	[[nodiscard]] bool HasGpuAccess(uint64_t vaddr, uint64_t size, GpuAccess access) const noexcept;

 	void UpdatePageWatchers(bool track, uint64_t vaddr, uint64_t size,
@@ -50,9 +49,8 @@ public:
 	void OnGpuUnmap(uint64_t vaddr, uint64_t size, GpuAccess access = GpuAccess::ReadWrite);

 	[[nodiscard]] bool HandleFault(PageFaultAccess access, uint64_t fault_vaddr) noexcept;
-	[[nodiscard]] bool HandleWriteRange(uint64_t vaddr, uint64_t size) noexcept;
 	[[nodiscard]] std::vector<std::unique_ptr<BackingWrite>>
-	     ReserveBackingWrites(std::span<const RangeSet::Range> ranges);
+	ReserveBackingWrites(std::span<const RangeSet::Range> ranges);

 private:
 	void BeginBackingWrite(uint64_t vaddr, uint64_t size) noexcept;
@@ -59,6 +59,16 @@ public:
 		return result;
 	}

+	[[nodiscard]] bool Contains(uint64_t address, uint64_t size) const {
+		const auto end = End(address, size);
+		auto       it  = m_ranges.upper_bound(address);
+		if (it == m_ranges.begin()) {
+			return false;
+		}
+		--it;
+		return it->first <= address && it->second >= end;
+	}
+
 	template <typename Func>
 	void ForEachIntersection(uint64_t address, uint64_t size, Func&& func) const {
 		const auto end = End(address, size);
@@ -4,10 +4,10 @@
 #include "common/logging/log.h"
 #include "common/profiler.h"
 #include "graphics/host_gpu/graphicContext.h"
-#include "graphics/host_gpu/renderer/commandScheduler.h"
-#include "graphics/host_gpu/renderer/render.h"
 #include "graphics/host_gpu/renderer/cache/resourceMutex.h"
 #include "graphics/host_gpu/renderer/cache/textureCache.h"
+#include "graphics/host_gpu/renderer/commandScheduler.h"
+#include "graphics/host_gpu/renderer/render.h"
 #include "kernel/memory.h"

 #include <algorithm>
@@ -183,9 +183,8 @@ BufferCache::RecordDownloads(std::span<const DownloadCopy> copies) {
 		return {};
 	}

-	auto& download = m_download_buffer;
-	const auto [mapped, base_offset] =
-	    download.Map(reservation_size, DOWNLOAD_ALIGNMENT);
+	auto& download                   = m_download_buffer;
+	const auto [mapped, base_offset] = download.Map(reservation_size, DOWNLOAD_ALIGNMENT);
 	if (mapped == nullptr) {
 		EXIT("BufferCache: download batch could not reserve the shared stream\n");
 	}
@@ -215,40 +214,38 @@ void BufferCache::PublishDownloads(std::span<const DownloadRange> downloads) {
 	}
 }

-void BufferCache::QueueGarbageDownload(std::span<const DownloadCopy> copies,
-                                       RetiredBuffer retire) {
+void BufferCache::QueueGarbageDownload(std::span<const DownloadCopy> copies, RetiredBuffer retire) {
 	if (copies.empty()) {
 		return;
 	}
-	auto downloads  = RecordDownloads(copies);
-	const auto tick = m_scheduler.CurrentTick();
+	auto       downloads = RecordDownloads(copies);
+	const auto tick      = m_scheduler.CurrentTick();
 	BeginBackingPublication(retire.address, retire.size, tick);
-	m_scheduler.DeferOperation(
-	    [this, downloads = std::move(downloads), retire = std::move(retire), tick]() mutable {
-		    PublishDownloads(downloads);
-		    {
-			    FaultSafeCacheLock lock(this, m_mutex);
-			    if (m_memory_tracker.IsRegionGpuModified(retire.address, retire.size)) {
-				    m_memory_tracker.ForEachDownloadRange<true>(
-				        retire.address, retire.size,
-				        [&](uint64_t address, uint64_t size) noexcept {
-					        m_memory_tracker.ValidateGpuDirtyPages(
-					            m_gpu_modified_ranges, address, size,
-					            "asynchronous garbage retirement");
-				        },
-				        [](uint64_t, uint64_t) noexcept {});
-			    }
-			    for (const auto& range: downloads) {
-				    m_gpu_modified_ranges.Subtract(range.address, range.size);
-			    }
-			    if (m_memory_tracker.IsRegionGpuModified(retire.address, retire.size) ||
-			        !m_gpu_modified_ranges.Intersections(retire.address, retire.size).empty()) {
-				    EXIT("BufferCache: asynchronous garbage collection retained GPU ownership\n");
-			    }
-			    m_memory_tracker.UntrackMemory(retire.address, retire.size);
-		    }
-		    CompleteBackingPublication(retire.address, retire.size, tick);
-	    });
+	m_scheduler.DeferOperation([this, downloads = std::move(downloads), retire = std::move(retire),
+	                            tick]() mutable {
+		PublishDownloads(downloads);
+		{
+			FaultSafeCacheLock lock(this, m_mutex);
+			if (m_memory_tracker.IsRegionGpuModified(retire.address, retire.size)) {
+				m_memory_tracker.ForEachDownloadRange<true>(
+				    retire.address, retire.size,
+				    [&](uint64_t address, uint64_t size) noexcept {
+					    m_memory_tracker.ValidateGpuDirtyPages(m_gpu_modified_ranges, address, size,
+					                                           "asynchronous garbage retirement");
+				    },
+				    [](uint64_t, uint64_t) noexcept {});
+			}
+			for (const auto& range: downloads) {
+				m_gpu_modified_ranges.Subtract(range.address, range.size);
+			}
+			if (m_memory_tracker.IsRegionGpuModified(retire.address, retire.size) ||
+			    !m_gpu_modified_ranges.Intersections(retire.address, retire.size).empty()) {
+				EXIT("BufferCache: asynchronous garbage collection retained GPU ownership\n");
+			}
+			m_memory_tracker.UntrackMemory(retire.address, retire.size);
+		}
+		CompleteBackingPublication(retire.address, retire.size, tick);
+	});
 }

 BufferCache::BufferCache(GraphicContext& graphics, CommandScheduler& scheduler,
@@ -301,14 +298,13 @@ BufferCache::~BufferCache() {
 bool BufferCache::SynchronizeBacking(uint64_t vaddr, uint64_t size) {
 	bool waited = false;
 	for (;;) {
-		uint64_t tick = 0;
+		uint64_t   tick       = 0;
 		const auto page_begin = vaddr & ~(TRACKER_PAGE_SIZE - 1);
-		const auto page_end =
-		    (vaddr + size + TRACKER_PAGE_SIZE - 1) & ~(TRACKER_PAGE_SIZE - 1);
+		const auto page_end   = (vaddr + size + TRACKER_PAGE_SIZE - 1) & ~(TRACKER_PAGE_SIZE - 1);
 		CacheRange affected {.address = page_begin, .size = page_end - page_begin};
 		{
 			FaultSafeCacheLock lock(this, m_mutex);
-			bool changed = true;
+			bool               changed = true;
 			while (changed) {
 				changed = false;
 				for (const auto& [address, cached]: m_buffers) {
@@ -384,6 +380,73 @@ BufferBinding BufferCache::UploadTransient(const void* data, uint64_t size, uint
 	return {owner, owner->Handle(), 0};
 }

+void BufferCache::InvalidateMemory(uint64_t vaddr, uint64_t size) {
+	if (vaddr == 0 || size == 0 || vaddr >= TRACKER_ADDRESS_SIZE ||
+	    size > TRACKER_ADDRESS_SIZE - vaddr) {
+		EXIT("BufferCache: invalid memory-invalidation range\n");
+	}
+	(void)SynchronizeBacking(vaddr, size);
+	if (!HasPageOverlap(vaddr, size)) {
+		return;
+	}
+	m_memory_tracker.InvalidateRegion(vaddr, size,
+	                                  [this, vaddr, size] { ReadMemory(vaddr, size); });
+}
+
+void BufferCache::ReadMemory(uint64_t vaddr, uint64_t size) {
+	(void)SynchronizeBacking(vaddr, size);
+	std::vector<DownloadCopy> copies;
+	{
+		FaultSafeCacheLock lock(this, m_mutex);
+		m_memory_tracker.ForEachDownloadRange<false>(
+		    vaddr, size,
+		    [&](uint64_t address, uint64_t bytes) noexcept {
+			    m_memory_tracker.ValidateGpuDirtyPages(m_gpu_modified_ranges, address, bytes,
+			                                           "memory invalidation");
+		    },
+		    [&](uint64_t address, uint64_t bytes) noexcept {
+			    for (const auto range: m_gpu_modified_ranges.Intersections(address, bytes)) {
+				    for (uint64_t copied = 0; copied < range.size;) {
+					    const auto copy_address = range.address + copied;
+					    auto       owner        = m_buffers.upper_bound(copy_address);
+					    if (owner == m_buffers.begin()) {
+						    EXIT("BufferCache: invalidation readback has no buffer owner\n");
+					    }
+					    auto& cached = *std::prev(owner)->second;
+					    if (!cached.buffer->IsInBounds(copy_address, 1)) {
+						    EXIT(
+						        "BufferCache: invalidation readback is outside its buffer owner\n");
+					    }
+					    const auto copy_size = std::min(range.size - copied,
+					                                    cached.vaddr + cached.size - copy_address);
+					    copies.push_back({cached.buffer, cached.buffer->Offset(copy_address),
+					                      copy_address, copy_size});
+					    copied += copy_size;
+				    }
+			    }
+		    });
+	}
+	if (copies.empty()) {
+		return;
+	}
+	auto downloads = RecordDownloads(copies);
+	m_scheduler.FinishCurrent();
+	PublishDownloads(downloads);
+	{
+		FaultSafeCacheLock lock(this, m_mutex);
+		m_memory_tracker.ForEachDownloadRange<true>(
+		    vaddr, size,
+		    [&](uint64_t address, uint64_t bytes) noexcept {
+			    m_memory_tracker.ValidateGpuDirtyPages(m_gpu_modified_ranges, address, bytes,
+			                                           "memory invalidation completion");
+		    },
+		    [](uint64_t, uint64_t) noexcept {});
+		for (const auto& range: downloads) {
+			m_gpu_modified_ranges.Subtract(range.address, range.size);
+		}
+	}
+}
+
 bool BufferCache::InvalidateMemory(PageFaultAccess access, uint64_t vaddr, uint64_t size,
                                   PageFaultPhase phase) noexcept {
 	const auto page = vaddr & ~(TRACKER_PAGE_SIZE - 1);
@@ -544,8 +607,8 @@ void BufferCache::UnmapMemory(uint64_t vaddr, uint64_t size) {
 			m_memory_tracker.ForEachDownloadRange<true>(
 			    begin, bytes,
 			    [&](uint64_t address, uint64_t download_size) noexcept {
-				    m_memory_tracker.ValidateGpuDirtyPages(
-				        m_gpu_modified_ranges, address, download_size, "unmap retirement");
+				    m_memory_tracker.ValidateGpuDirtyPages(m_gpu_modified_ranges, address,
+				                                           download_size, "unmap retirement");
 			    },
 			    [](uint64_t, uint64_t) noexcept {});
 		}
@@ -722,12 +785,11 @@ ImageBufferSource BufferCache::ObtainBufferForImage(uint64_t vaddr, uint64_t siz

 	{
 		FaultSafeCacheLock lock(this, m_mutex);
-		const bool         cpu_modified        = m_memory_tracker.IsRegionCpuModified(vaddr, size);
-		const bool         gpu_modified        = m_memory_tracker.IsRegionGpuModified(vaddr, size);
-		const auto         dirty               = m_gpu_modified_ranges.Intersections(vaddr, size);
-		const bool invalidated =
-		    !m_image_invalidated_ranges.Intersections(vaddr, size).empty();
-		const bool         requested_gpu_owned = !dirty.empty();
+		const bool         cpu_modified = m_memory_tracker.IsRegionCpuModified(vaddr, size);
+		const bool         gpu_modified = m_memory_tracker.IsRegionGpuModified(vaddr, size);
+		const auto         dirty        = m_gpu_modified_ranges.Intersections(vaddr, size);
+		const bool invalidated = !m_image_invalidated_ranges.Intersections(vaddr, size).empty();
+		const bool requested_gpu_owned = !dirty.empty();
 		m_memory_tracker.ValidateGpuDirtyOwnership(m_gpu_modified_ranges, vaddr, size,
 		                                           "image source");

@@ -807,8 +869,8 @@ ImageBufferSource BufferCache::ObtainBufferForImage(uint64_t vaddr, uint64_t siz
 	}

 	FaultSafeCacheLock lock(this, m_mutex);
-	const auto         dirty               = m_gpu_modified_ranges.Intersections(vaddr, size);
-	const bool invalidated = !m_image_invalidated_ranges.Intersections(vaddr, size).empty();
+	const auto         dirty       = m_gpu_modified_ranges.Intersections(vaddr, size);
+	const bool         invalidated = !m_image_invalidated_ranges.Intersections(vaddr, size).empty();
 	const bool         requested_gpu_owned = !dirty.empty();
 	auto               owner               = find_owner();
 	if (requested_gpu_owned && owner == m_buffers.end()) {
@@ -831,9 +893,8 @@ ImageBufferSource BufferCache::ObtainBufferForImage(uint64_t vaddr, uint64_t siz
 	    [&]() noexcept {
 		    for (const auto& [address, upload_size]: uploads) {
 			    cached.buffer->CopyFrom(
-			        m_scheduler.Current(), m_staging_buffer,
-			        stage_offset + address - stage_address, cached.buffer->Offset(address),
-			        upload_size, vk::AccessFlagBits::eHostWrite);
+			        m_scheduler.Current(), m_staging_buffer, stage_offset + address - stage_address,
+			        cached.buffer->Offset(address), upload_size, vk::AccessFlagBits::eHostWrite);
 		    }
 	    });
 	DiscardGpuDirtyBytesLocked(vaddr, size, "staged image source transfer");
@@ -917,9 +978,8 @@ std::pair<std::shared_ptr<Buffer>, uint64_t> BufferCache::ObtainBufferForImageWr
 	    [&]() noexcept {
 		    for (const auto& [address, upload_size]: uploads) {
 			    cached.buffer->CopyFrom(
-			        m_scheduler.Current(), m_staging_buffer,
-			        stage_offset + address - stage_address, cached.buffer->Offset(address),
-			        upload_size, vk::AccessFlagBits::eHostWrite);
+			        m_scheduler.Current(), m_staging_buffer, stage_offset + address - stage_address,
+			        cached.buffer->Offset(address), upload_size, vk::AccessFlagBits::eHostWrite);
 		    }
 	    });
 	return {cached.buffer, cached.buffer->Offset(vaddr)};
@@ -946,12 +1006,12 @@ void BufferCache::FillBuffer(uint64_t vaddr, uint64_t size, uint32_t value, bool
 		const auto      region = m_texture_cache.QueryRegion(vaddr, size);
 		if (!HasGpuDirtyBytes(vaddr, size) && !region.gpu_image_bytes) {
 			if (region.image_bytes) {
-				m_texture_cache.PrepareHostWrite(vaddr, size);
+				m_texture_cache.InvalidateMemory(vaddr, size);
 			}
 			std::array<uint32_t, 4096> values;
 			values.fill(value);
-			const std::span<const uint8_t> bytes {
-			    reinterpret_cast<const uint8_t*>(values.data()), sizeof(values)};
+			const std::span<const uint8_t> bytes {reinterpret_cast<const uint8_t*>(values.data()),
+			                                      sizeof(values)};
 			for (uint64_t offset = 0; offset < size;) {
 				const auto chunk = std::min<uint64_t>(size - offset, bytes.size());
 				WriteHostMemory(vaddr + offset, bytes.first(chunk));
@@ -992,7 +1052,7 @@ void BufferCache::CopyBuffer(uint64_t dst_vaddr, uint64_t src_vaddr, uint64_t si
 		if (src_memory) {
 			(void)SynchronizeBacking(src_vaddr, size);
 		}
-		const auto      src_region =
+		const auto src_region =
 		    src_memory ? m_texture_cache.QueryRegion(src_vaddr, size) : TextureCache::RegionInfo {};
 		const auto dst_region =
 		    dst_memory ? m_texture_cache.QueryRegion(dst_vaddr, size) : TextureCache::RegionInfo {};
@@ -1004,7 +1064,7 @@ void BufferCache::CopyBuffer(uint64_t dst_vaddr, uint64_t src_vaddr, uint64_t si
 		    !HasGpuDirtyBytes(dst_vaddr, size) && !src_region.gpu_image_bytes &&
 		    !dst_region.gpu_image_bytes) {
 			if (dst_region.image_bytes) {
-				m_texture_cache.PrepareHostWrite(dst_vaddr, size);
+				m_texture_cache.InvalidateMemory(dst_vaddr, size);
 			}
 			std::array<uint8_t, 64 * 1024> bytes;
 			for (uint64_t offset = 0; offset < size;) {
@@ -1037,10 +1097,10 @@ void BufferCache::CopyBuffer(uint64_t dst_vaddr, uint64_t src_vaddr, uint64_t si
 		EXIT("BufferCache: resolved Vulkan copy ranges overlap\n");
 	}
 	auto& source = src.owner != nullptr ? *std::static_pointer_cast<Buffer>(src.owner)
-	               : src_gds           ? m_gds_buffer
-	                                   : m_stream_buffer;
-	auto& destination = dst.owner != nullptr ? *std::static_pointer_cast<Buffer>(dst.owner)
-	                                         : m_gds_buffer;
+	               : src_gds            ? m_gds_buffer
+	                                    : m_stream_buffer;
+	auto& destination =
+	    dst.owner != nullptr ? *std::static_pointer_cast<Buffer>(dst.owner) : m_gds_buffer;
 	if (source.Handle() != src.buffer || destination.Handle() != dst.buffer) {
 		EXIT("BufferCache: resolved copy owner does not match its Vulkan handle\n");
 	}
@@ -1107,7 +1167,7 @@ void BufferCache::BeginBackingPublication(uint64_t vaddr, uint64_t size, uint64_

 void BufferCache::CompleteBackingPublication(uint64_t vaddr, uint64_t size, uint64_t tick) {
 	std::lock_guard lock(m_publication_mutex);
-	const auto publication =
+	const auto      publication =
 	    std::ranges::find_if(m_pending_backing_publications, [&](const auto& pending) {
 		    return pending.address == vaddr && pending.size == size && pending.tick == tick;
 	    });
@@ -1170,7 +1230,7 @@ void BufferCache::RunGarbageCollector() {
 	const uint64_t age        = std::min<uint64_t>(aggressive ? 80 : 160, tick);
 	const size_t   limit      = aggressive ? 64 : 32;

-	std::vector<RetiredBuffer> retires;
+	std::vector<RetiredBuffer>                                       retires;
 	std::vector<std::pair<RetiredBuffer, std::vector<DownloadCopy>>> dirty_retires;
 	{
 		FaultSafeCacheLock    lock(this, m_mutex);
@@ -1190,8 +1250,8 @@ void BufferCache::RunGarbageCollector() {
 		}
 		for (const auto address: candidates) {
 			auto& cached = *m_buffers.at(address);
-			m_memory_tracker.ValidateGpuDirtyOwnership(
-			    m_gpu_modified_ranges, cached.vaddr, cached.size, "garbage collection");
+			m_memory_tracker.ValidateGpuDirtyOwnership(m_gpu_modified_ranges, cached.vaddr,
+			                                           cached.size, "garbage collection");
 			retires.push_back({address, cached.size, cached.buffer});
 			// GC runs immediately before submission. Preserve every source referenced by commands
 			// already recorded in the active batch.
@@ -1205,13 +1265,13 @@ void BufferCache::RunGarbageCollector() {
 			m_memory_tracker.ForEachDownloadRange<false>(
 			    retire.address, retire.size,
 			    [&](uint64_t address, uint64_t size) noexcept {
-				    m_memory_tracker.ValidateGpuDirtyPages(
-				        m_gpu_modified_ranges, address, size, "garbage collection");
+				    m_memory_tracker.ValidateGpuDirtyPages(m_gpu_modified_ranges, address, size,
+				                                           "garbage collection");
 			    },
 			    [&](uint64_t address, uint64_t size) noexcept {
 				    for (const auto range: m_gpu_modified_ranges.Intersections(address, size)) {
-					    copies.push_back({retire.owner, range.address - retire.address, range.address,
-					                      range.size});
+					    copies.push_back({retire.owner, range.address - retire.address,
+					                      range.address, range.size});
 				    }
 			    });
 		}
@@ -49,6 +49,8 @@ public:

 	[[nodiscard]] bool InvalidateMemory(PageFaultAccess access, uint64_t vaddr, uint64_t size,
 	                                    PageFaultPhase phase) noexcept;
+	void               InvalidateMemory(uint64_t vaddr, uint64_t size);
+	void               ReadMemory(uint64_t vaddr, uint64_t size);
 	void               UnmapMemory(uint64_t vaddr, uint64_t size);
 	[[nodiscard]] BufferBinding ObtainBuffer(CommandBuffer& command, uint64_t vaddr, uint64_t size,
 	                                         bool is_written = false, bool is_read = true,
@@ -71,8 +73,8 @@ public:
 	[[nodiscard]] bool IsRegionCpuModified(uint64_t vaddr, uint64_t size);
 	[[nodiscard]] bool IsRegionGpuModified(uint64_t vaddr, uint64_t size);
 	void               InvalidateImageAliases(uint64_t vaddr, uint64_t size);
-	void BeginBackingPublication(uint64_t vaddr, uint64_t size, uint64_t tick);
-	void CompleteBackingPublication(uint64_t vaddr, uint64_t size, uint64_t tick);
+	void               BeginBackingPublication(uint64_t vaddr, uint64_t size, uint64_t tick);
+	void               CompleteBackingPublication(uint64_t vaddr, uint64_t size, uint64_t tick);
 	[[nodiscard]] bool SynchronizeBacking(uint64_t vaddr, uint64_t size);
 	void               PublishImageBuffer(uint64_t vaddr, uint64_t size);
 	void ValidateGpuAccess(uint64_t vaddr, uint64_t size, bool is_read, bool is_written) const;
@@ -91,23 +93,21 @@ private:
 	struct RetiredBuffer;
 	struct FaultReadback;
 	struct PendingBackingPublication;
-	static constexpr uint64_t DOWNLOAD_ALIGNMENT = 64;
-	[[nodiscard]] static uint64_t AlignDown(uint64_t value) noexcept;
-	[[nodiscard]] static uint64_t AlignUp(uint64_t value);
+	static constexpr uint64_t               DOWNLOAD_ALIGNMENT = 64;
+	[[nodiscard]] static uint64_t           AlignDown(uint64_t value) noexcept;
+	[[nodiscard]] static uint64_t           AlignUp(uint64_t value);
 	[[nodiscard]] static constexpr uint64_t AlignDownload(uint64_t size) noexcept {
 		return (size + DOWNLOAD_ALIGNMENT - 1) & ~(DOWNLOAD_ALIGNMENT - 1);
 	}
 	[[nodiscard]] static bool PageOverlaps(uint64_t left, uint64_t left_size, uint64_t right,
-	                                      uint64_t right_size) noexcept;
-	[[nodiscard]] static std::pair<uint64_t, uint64_t>
-	     DownloadEnvelope(const DownloadCopy& copy);
-	[[nodiscard]] static bool   ResolveOverlap(CacheRange& merged, CacheRange candidate) noexcept;
+	                                       uint64_t right_size) noexcept;
+	[[nodiscard]] static std::pair<uint64_t, uint64_t> DownloadEnvelope(const DownloadCopy& copy);
+	[[nodiscard]] static bool ResolveOverlap(CacheRange& merged, CacheRange candidate) noexcept;
 	void Upload(CommandBuffer& command, Buffer& destination, uint64_t destination_offset,
 	            const void* source, uint64_t size);
 	[[nodiscard]] CachedBuffer& GetOrCreateBuffer(CommandBuffer& command, uint64_t vaddr,
 	                                              uint64_t size);
-	[[nodiscard]] std::vector<DownloadRange>
-	     RecordDownloads(std::span<const DownloadCopy> copies);
+	[[nodiscard]] std::vector<DownloadRange> RecordDownloads(std::span<const DownloadCopy> copies);
 	void PublishDownloads(std::span<const DownloadRange> downloads);
 	void QueueGarbageDownload(std::span<const DownloadCopy> copies, RetiredBuffer retire);
 	void RefreshInvalidatedRanges(CommandBuffer& command, CachedBuffer& cached, uint64_t vaddr,
@@ -36,7 +36,8 @@ bool GpuResourceManager::InvalidateMemory(PageFaultAccess access, uint64_t vaddr
 }

 bool GpuResourceManager::HandleFault(PageFaultAccess access, uint64_t fault_vaddr) noexcept {
-	if (!m_page_manager.IsMapped(fault_vaddr, 1)) {
+	constexpr uint64_t fault_size = 8;
+	if (!IsMapped(fault_vaddr, fault_size)) {
 		return false;
 	}
 	if (CommandScheduler::InDeferredOperation()) {
@@ -47,10 +48,15 @@ bool GpuResourceManager::HandleFault(PageFaultAccess access, uint64_t fault_vadd
 	bool       handled = false;
 	const auto resolve = [this, access, fault_vaddr, &handled](CommandProcessor& cp) {
 		cp.BeginReadbackTransaction();
-		(void)m_buffer_cache.SynchronizeBacking(fault_vaddr, 1);
 		{
 			ResourceMutex::FaultScope fault(m_resource_mutex);
-			handled = m_page_manager.HandleFault(access, fault_vaddr);
+			if (access == PageFaultAccess::Write) {
+				m_buffer_cache.InvalidateMemory(fault_vaddr, fault_size);
+				m_texture_cache.InvalidateMemory(fault_vaddr, fault_size);
+			} else {
+				m_buffer_cache.ReadMemory(fault_vaddr, fault_size);
+			}
+			handled = true;
 		}
 		cp.EndReadbackTransaction();
 	};
@@ -68,47 +74,52 @@ bool GpuResourceManager::HandleFault(PageFaultAccess access, uint64_t fault_vadd
 	return handled;
 }

-void GpuResourceManager::PrepareHostWrite(uint64_t vaddr, uint64_t size) {
-	if (!m_page_manager.HasAnyMapping(vaddr, size)) {
-		return;
+bool GpuResourceManager::InvalidateMemory(uint64_t vaddr, uint64_t size) {
+	if (!IsMapped(vaddr, size)) {
+		return false;
 	}
 	if (CommandScheduler::InDeferredOperation()) {
-		EXIT("unsupported host write from an asynchronous GPU completion, addr=0x%016" PRIx64
-		     " size=0x%016" PRIx64 "\n",
+		EXIT("unsupported memory invalidation from an asynchronous GPU completion, "
+		     "addr=0x%016" PRIx64 " size=0x%016" PRIx64 "\n",
 		     vaddr, size);
 	}
-	const auto handle_range = [this, vaddr, size] {
-		if (!m_page_manager.HandleWriteRange(vaddr, size)) {
-			EXIT("failed to prepare host write, addr=0x%016" PRIx64 " size=0x%016" PRIx64 "\n",
-			     vaddr, size);
-		}
-	};
-	const auto resolve = [this, &handle_range](CommandProcessor& cp) {
+	const auto resolve = [this, vaddr, size](CommandProcessor& cp) {
 		cp.BeginReadbackTransaction();
 		{
 			ResourceMutex::FaultScope fault(m_resource_mutex);
-			handle_range();
+			m_buffer_cache.InvalidateMemory(vaddr, size);
+			m_texture_cache.InvalidateMemory(vaddr, size);
 		}
 		cp.EndReadbackTransaction();
 	};
 	if (auto* cp = Gpu::CurrentCommandProcessor(); cp != nullptr) {
 		resolve(*cp);
-		return;
+		return true;
 	}
 	if (m_resource_mutex.IsOwnedByCurrentThread()) {
-		EXIT("unsupported host write from a pre-owned resource transaction, addr=0x%016" PRIx64
-		     " size=0x%016" PRIx64 "\n",
+		EXIT("unsupported memory invalidation from a pre-owned resource transaction, "
+		     "addr=0x%016" PRIx64 " size=0x%016" PRIx64 "\n",
 		     vaddr, size);
 	}
 	EXIT_IF(m_gpu == nullptr);
 	m_gpu->SendCommandSyncWithProcessor(resolve);
+	return true;
 }

 bool GpuResourceManager::IsMapped(uint64_t vaddr, uint64_t size) const noexcept {
-	return m_page_manager.IsMapped(vaddr, size);
+	if (vaddr == 0 || size == 0 || vaddr >= TRACKER_ADDRESS_SIZE ||
+	    size > TRACKER_ADDRESS_SIZE - vaddr) {
+		return false;
+	}
+	std::shared_lock lock(m_mapped_ranges_mutex);
+	return m_mapped_ranges.Contains(vaddr, size);
 }

 void GpuResourceManager::MapMemory(uint64_t vaddr, uint64_t size, GpuAccess access) {
+	{
+		std::lock_guard lock(m_mapped_ranges_mutex);
+		m_mapped_ranges.Add(vaddr, size);
+	}
 	m_page_manager.OnGpuMap(vaddr, size, access);
 }

@@ -120,6 +131,8 @@ void GpuResourceManager::UnmapMemory(uint64_t vaddr, uint64_t size, GpuAccess ac
 		m_texture_cache.UnmapMemory(vaddr, size);
 		m_buffer_cache.UnmapMemory(vaddr, size);
 		m_page_manager.OnGpuUnmap(vaddr, size, access);
+		std::lock_guard lock(m_mapped_ranges_mutex);
+		m_mapped_ranges.Subtract(vaddr, size);
 	};
 	if (m_gpu == nullptr) {
 		if (m_resource_mutex.IsOwnedByCurrentThread()) {
@@ -9,6 +9,7 @@
 #include "graphics/host_gpu/renderer/cache/textureCache.h"

 #include <cstdint>
+#include <shared_mutex>

 namespace Libs::Graphics {

@@ -26,7 +27,7 @@ public:
 	void                        SetGpu(Gpu* gpu) noexcept { m_gpu = gpu; }

 	[[nodiscard]] bool HandleFault(PageFaultAccess access, uint64_t fault_vaddr) noexcept;
-	void               PrepareHostWrite(uint64_t vaddr, uint64_t size);
+	[[nodiscard]] bool InvalidateMemory(uint64_t vaddr, uint64_t size);
 	[[nodiscard]] bool IsMapped(uint64_t vaddr, uint64_t size) const noexcept;
 	void               MapMemory(uint64_t vaddr, uint64_t size, GpuAccess access);
 	void               UnmapMemory(uint64_t vaddr, uint64_t size, GpuAccess access);
@@ -38,11 +39,13 @@ private:
 	[[nodiscard]] bool InvalidateMemory(PageFaultAccess access, uint64_t vaddr, uint64_t size,
 	                                    PageFaultPhase phase) noexcept;

-	PageManager   m_page_manager;
-	ResourceMutex m_resource_mutex;
-	BufferCache   m_buffer_cache;
-	TextureCache  m_texture_cache;
-	Gpu*          m_gpu = nullptr;
+	PageManager               m_page_manager;
+	ResourceMutex             m_resource_mutex;
+	BufferCache               m_buffer_cache;
+	TextureCache              m_texture_cache;
+	mutable std::shared_mutex m_mapped_ranges_mutex;
+	RangeSet                  m_mapped_ranges;
+	Gpu*                      m_gpu = nullptr;
 };

 } // namespace Libs::Graphics
@@ -1439,9 +1439,9 @@ bool TextureCache::ClearImageFromBuffer(CommandBuffer& command, uint64_t address
 	return true;
 }

-void TextureCache::PrepareHostWrite(uint64_t address, uint64_t size) {
+void TextureCache::InvalidateMemory(uint64_t address, uint64_t size) {
 	if (!GuestRange {address, size}.Valid()) {
-		EXIT("TextureCache: invalid host-write range\n");
+		EXIT("TextureCache: invalid memory-invalidation range\n");
 	}
 	CacheLock lock(*this, m_lock);
 	InvalidateCpuAliases(address, size);
@@ -65,7 +65,7 @@ public:

 	[[nodiscard]] bool ClearImageFromBuffer(CommandBuffer& command, uint64_t address, uint64_t size,
 	                                        uint32_t packed_clear);
-	void               PrepareHostWrite(uint64_t address, uint64_t size);
+	void               InvalidateMemory(uint64_t address, uint64_t size);
 	[[nodiscard]] bool SynchronizeImageToBuffer(uint64_t address, uint64_t size);
 	[[nodiscard]] bool InvalidateMemoryFromGPU(uint64_t address, uint64_t size,
 	                                           bool formatted_buffer_write = false);
@@ -103,10 +103,7 @@ IsSupportedSampledDepthUintResource(const ShaderRecompiler::IR::ImageResource& r

 inline void ValidateStorageColorView(vk::Format image_format, vk::Format view_format,
                                     uint32_t swizzle) noexcept {
-	const auto srgb_view = SrgbStorageViewFormat(image_format);
-	const bool srgb_storage_view =
-	    srgb_view != vk::Format::eUndefined && view_format == srgb_view;
-	if ((image_format != view_format && !srgb_storage_view) ||
+	if (!ImageViewOps::FormatsCompatible(image_format, view_format) ||
 	    !IsValidImageSwizzle(swizzle)) {
 		UnsupportedColorView("storage", image_format, view_format, swizzle);
 	}
@@ -122,7 +119,10 @@ IsSupportedStorageImageResource(const ShaderRecompiler::IR::ImageResource& resou
 	        resource.dimension == ShaderRecompiler::Decoder::ImageDimension::Dim3D ||
 	        resource.dimension == ShaderRecompiler::Decoder::ImageDimension::Dim2DArray) &&
 	       resource.mip_mode == ShaderRecompiler::IR::ImageMipMode::None && resource.written &&
-	       !resource.atomic && !resource.depth_compare;
+	       (!resource.atomic ||
+	        (resource.kind == ShaderRecompiler::IR::ResourceKind::StorageImageUint &&
+	         resource.read)) &&
+	       !resource.depth_compare;
 }

 inline void
@@ -14,13 +14,13 @@
 #include "graphics/guest_gpu/tile.h"
 #include "graphics/host_gpu/graphicContext.h"
 #include "graphics/host_gpu/hostMemory.h"
-#include "graphics/host_gpu/renderer/image/textureCommon.h"
 #include "graphics/host_gpu/renderer/debug.h"
-#include "graphics/host_gpu/renderer/pipeline/descriptorCache.h"
 #include "graphics/host_gpu/renderer/image/imageView.h"
+#include "graphics/host_gpu/renderer/image/textureCommon.h"
+#include "graphics/host_gpu/renderer/pipeline/descriptorCache.h"
+#include "graphics/host_gpu/renderer/pipeline/shaderResourceBarrier.h"
 #include "graphics/host_gpu/renderer/render.h"
 #include "graphics/host_gpu/renderer/renderContext.h"
-#include "graphics/host_gpu/renderer/pipeline/shaderResourceBarrier.h"
 #include "graphics/host_gpu/vma.h"
 #include "graphics/host_gpu/vulkanCommon.h"
 #include "graphics/shader/recompiler/ir/BindingLayout.h"
@@ -239,11 +239,11 @@ bool IsSupportedDepthTextureEncoding(const ShaderTextureResource& descriptor, co
 	const uint32_t     field3_expected =
 	    (descriptor.Type() << 28u) | field3_common | descriptor.DstSelXYZW();
 	const uint32_t field4_expected = descriptor.Depth() | (descriptor.BaseArray5() << 16u);
-	const bool common = (descriptor.fields[1] & field1_reserved_mask) == 0 &&
-	                    (descriptor.fields[2] & field2_reserved_mask) == 0 &&
-	                    descriptor.fields[3] == field3_expected &&
-	                    descriptor.fields[4] == field4_expected &&
-	                    descriptor.fields[5] == field5_expected;
+	const bool     common          = (descriptor.fields[1] & field1_reserved_mask) == 0 &&
+	                                 (descriptor.fields[2] & field2_reserved_mask) == 0 &&
+	                                 descriptor.fields[3] == field3_expected &&
+	                                 descriptor.fields[4] == field4_expected &&
+	                                 descriptor.fields[5] == field5_expected;
 	if (!common || (descriptor.fields[6] == 0 && descriptor.fields[7] != 0)) {
 		return false;
 	}
@@ -318,8 +318,8 @@ static bool IsSupportedStorageTextureDescriptor(const ShaderRecompiler::IR::Imag
 	const bool valid_2d_slice =
 	    (is_color_2d && descriptor.Depth() == 0 && descriptor.BaseArray5() == 0) ||
 	    (is_color_2d_array && descriptor.BaseArray5() <= descriptor.Depth());
-	const bool is_2d = resource.dimension == ShaderRecompiler::Decoder::ImageDimension::Dim2D &&
-	                   valid_2d_slice;
+	const bool is_2d =
+	    resource.dimension == ShaderRecompiler::Decoder::ImageDimension::Dim2D && valid_2d_slice;
 	const bool is_2d_array =
 	    resource.dimension == ShaderRecompiler::Decoder::ImageDimension::Dim2DArray &&
 	    is_color_2d_array && descriptor.BaseArray5() <= descriptor.Depth();
@@ -340,13 +340,13 @@ static bool IsSupportedStorageTextureDescriptor(const ShaderRecompiler::IR::Imag
 	const bool supported_tile = tile == Prospero::GpuEnumValue(Prospero::TileMode::kLinear) ||
 	                            tile == Prospero::GpuEnumValue(Prospero::TileMode::kRenderTarget) ||
 	                            supported_depth_tile || supported_standard_tile;
+	const auto swizzle        = descriptor.DstSelXYZW();
 	const bool supported_swizzle =
-	    IsValidImageSwizzle(descriptor.DstSelXYZW()) &&
-	    (descriptor.DstSelXYZW() == DstSel(4, 5, 6, 7) || !resource.read);
+	    IsValidImageSwizzle(swizzle) &&
+	    (swizzle == DstSel(4, 5, 6, 7) || !resource.read || resource.atomic);
 	const bool supported_mip_view = descriptor.BaseLevel() == 0 || is_1d || is_2d;
 	return (is_1d || is_1d_array || is_2d || is_2d_array || is_3d) && supported_tile &&
-	       supported_mip_view &&
-	       descriptor.BaseLevel() == descriptor.LastLevel() &&
+	       supported_mip_view && descriptor.BaseLevel() == descriptor.LastLevel() &&
 	       descriptor.LastLevel() <= descriptor.MaxMip() && descriptor.MinLod() == 0 &&
 	       supported_swizzle && descriptor.BCSwizzle() == 0 && !descriptor.MsaaDepth();
 }
@@ -377,8 +377,10 @@ void ValidateStorageTexture(const ShaderRecompiler::IR::ImageResource& resource,
 	const bool encoding_ok   = IsSupportedStorageTextureEncoding(descriptor);
 	const bool uint_resource =
 	    resource.kind == ShaderRecompiler::IR::ResourceKind::StorageImageUint;
-	const bool format_ok = Prospero::IsSupportedTextureFormat(format) &&
-	                       uint_resource == Prospero::IsUintTextureFormat(format);
+	const bool format_ok =
+	    Prospero::IsSupportedTextureFormat(format) &&
+	    uint_resource == Prospero::IsUintTextureFormat(format) &&
+	    (!resource.atomic || format == Prospero::GpuEnumValue(Prospero::BufferFormat::k32UInt));
 	if (resource_ok && descriptor_ok && encoding_ok && format_ok && size != 0) {
 		return;
 	}
@@ -618,12 +620,12 @@ RenderExecutor::ResolveTexture(const ShaderRecompiler::IR::ImageResource&   reso
 		                                             resource.written);
 	}

-	const auto              pixel_format = TextureGetFormat(format);
+	const auto              pixel_format        = TextureGetFormat(format);
 	const auto              storage_view_format = SrgbStorageViewFormat(pixel_format);
-	const auto              view_format =
-	    storage && storage_view_format != vk::Format::eUndefined ? storage_view_format
-	                                                            : pixel_format;
-	const auto              block_bytes  = Prospero::BlockCompressedBytesPerBlock(format);
+	const auto              view_format = storage && storage_view_format != vk::Format::eUndefined
+	                                          ? storage_view_format
+	                                          : pixel_format;
+	const auto              block_bytes = Prospero::BlockCompressedBytesPerBlock(format);
 	TextureCache::ImageDesc desc {};
 	desc.info.data         = {address, size.size};
 	desc.info.pixel_format = pixel_format;
@@ -18,15 +18,16 @@
 #include "graphics/host_gpu/renderer/depthRenderTarget.h"
 #include "graphics/host_gpu/renderer/pipeline/descriptorCache.h"
 #include "graphics/host_gpu/renderer/pipeline/pipelineCache.h"
-#include "graphics/host_gpu/renderer/render.h"
-#include "graphics/host_gpu/renderer/renderContext.h"
 #include "graphics/host_gpu/renderer/pipeline/shaderResourceBarrier.h"
 #include "graphics/host_gpu/renderer/pipeline/shaderSubgroup.h"
+#include "graphics/host_gpu/renderer/render.h"
+#include "graphics/host_gpu/renderer/renderContext.h"
 #include "graphics/host_gpu/vulkanCommon.h"
 #include "graphics/shader/recompiler/ir/ResourceMaterialization.h"
 #include "graphics/shader/recompiler/ir/ShaderIR.h"
 #include "graphics/shader/shader.h"
 #include "kernel/eventQueue.h"
+#include "kernel/memory.h"
 #include "kernel/pthread.h"
 #include "libs/errno.h"

@@ -221,8 +222,7 @@ static void LogDrawTargetState(const char* draw_name, const RenderColorInfo& col
 	LogMrtState(draw_name, buffer, ps_input_info);
 }

-static void LogDrawInputState(const RenderCommandBuffer&   buffer,
-                               const RenderColorInfo&       color,
+static void LogDrawInputState(const RenderCommandBuffer& buffer, const RenderColorInfo& color,
                              const ShaderVertexInputInfo& vs_input_info,
                              uint32_t index_type_and_size, uint32_t index_count,
                              const void* index_addr) {
@@ -499,9 +499,9 @@ struct DrawCallInfo {
 };

 RenderState RenderExecutor::AcquireRenderTargets(CommandBuffer& buffer, RenderColorInfo* colors,
-                                             uint32_t color_count, RenderDepthInfo& depth) {
+                                                 uint32_t color_count, RenderDepthInfo& depth) {
 	EXIT_IF(colors == nullptr || color_count > RENDER_COLOR_ATTACHMENTS_MAX);
-	auto& cache = m_context.GetTextureCache();
+	auto&       cache = m_context.GetTextureCache();
 	RenderState state {};
 	state.width                 = std::numeric_limits<uint32_t>::max();
 	state.height                = std::numeric_limits<uint32_t>::max();
@@ -512,8 +512,7 @@ RenderState RenderExecutor::AcquireRenderTargets(CommandBuffer& buffer, RenderCo
 		auto& target = colors[i];
 		EXIT_IF(!target.image_id);
 		const auto old_image = cache.ResolveOwner(target.image_id);
-		if (old_image == nullptr ||
-		    (!old_image->registered && !old_image->info.data.Empty()) ||
+		if (old_image == nullptr || (!old_image->registered && !old_image->info.data.Empty()) ||
 		    old_image->binding.needs_rebind) {
 			if (old_image != nullptr) {
 				old_image->binding = {};
@@ -522,7 +521,7 @@ RenderState RenderExecutor::AcquireRenderTargets(CommandBuffer& buffer, RenderCo
 			BindRenderTarget(target.image_id);
 		}
 		target.image_view = cache.FindRenderTarget(target.image_id, target.desc);
-		auto& image = cache.GetImage(target.image_id);
+		auto& image       = cache.GetImage(target.image_id);
 		EXIT_IF(image.backing.samples != target.samples || target.image_view == nullptr);
 		if (attachment_samples == 0) {
 			attachment_samples = target.samples;
@@ -530,20 +529,19 @@ RenderState RenderExecutor::AcquireRenderTargets(CommandBuffer& buffer, RenderCo
 			EXIT("mixed color attachment sample counts are unsupported: %u and %u\n",
 			     attachment_samples, target.samples);
 		}
-		const auto& view = target.desc.view_info;
-		const auto layout =
-		    image.binding.is_bound ? vk::ImageLayout::eGeneral
-		                           : vk::ImageLayout::eColorAttachmentOptimal;
+		const auto& view   = target.desc.view_info;
+		const auto  layout = image.binding.is_bound ? vk::ImageLayout::eGeneral
+		                                            : vk::ImageLayout::eColorAttachmentOptimal;
 		image.Transit(layout,
 		              vk::AccessFlagBits2::eColorAttachmentRead |
 		                  vk::AccessFlagBits2::eColorAttachmentWrite,
 		              ImageSubresourceRange {view.base_level, view.level_count, view.base_layer,
 		                                     view.layer_count},
 		              buffer.Handle());
-		state.width      = std::min(state.width, target.extent.width);
-		state.height     = std::min(state.height, target.extent.height);
-		state.num_layers = std::min(state.num_layers, view.layer_count);
-		auto& attachment = state.color_attachments[i];
+		state.width             = std::min(state.width, target.extent.width);
+		state.height            = std::min(state.height, target.extent.height);
+		state.num_layers        = std::min(state.num_layers, view.layer_count);
+		auto& attachment        = state.color_attachments[i];
 		attachment.image_view   = target.image_view;
 		attachment.image_layout = layout;
 		attachment.clear_value  = target.color_clear_value.uint32;
@@ -561,8 +559,7 @@ RenderState RenderExecutor::AcquireRenderTargets(CommandBuffer& buffer, RenderCo
 		depth.depth_meta_clear_enable =
 		    depth.htile &&
 		    cache.IsMetaCleared(depth.htile_buffer_vaddr, depth.desc.view_info.base_layer);
-		depth.depth_load_clear_enable =
-		    depth.depth_clear_enable || depth.depth_meta_clear_enable;
+		depth.depth_load_clear_enable = depth.depth_clear_enable || depth.depth_meta_clear_enable;
 		if (depth.depth_meta_clear_enable &&
 		    !cache.TouchMeta(depth.htile_buffer_vaddr, depth.desc.view_info.base_layer, false)) {
 			EXIT("failed to consume HTile clear state\n");
@@ -572,12 +569,12 @@ RenderState RenderExecutor::AcquireRenderTargets(CommandBuffer& buffer, RenderCo
 		if (attachment_samples == 0) {
 			attachment_samples = depth.samples;
 		} else if (attachment_samples != depth.samples) {
-			EXIT("mixed color/depth sample counts are unsupported: %u and %u\n",
-			     attachment_samples, depth.samples);
+			EXIT("mixed color/depth sample counts are unsupported: %u and %u\n", attachment_samples,
+			     depth.samples);
 		}
 		const auto layout = depth_attachment_layout(depth);
 		const auto writes = depth.AttachmentWriteAspects();
-		auto access = vk::AccessFlags2 {vk::AccessFlagBits2::eDepthStencilAttachmentRead};
+		auto       access = vk::AccessFlags2 {vk::AccessFlagBits2::eDepthStencilAttachmentRead};
 		if (writes) {
 			access |= vk::AccessFlagBits2::eDepthStencilAttachmentWrite;
 		}
@@ -586,21 +583,19 @@ RenderState RenderExecutor::AcquireRenderTargets(CommandBuffer& buffer, RenderCo
 		              ImageSubresourceRange {view.base_level, view.level_count, view.base_layer,
 		                                     view.layer_count},
 		              buffer.Handle());
-		state.width      = std::min(state.width, depth.width);
-		state.height     = std::min(state.height, depth.height);
-		state.num_layers = std::min(state.num_layers, view.layer_count);
-		const auto aspects = ImageViewOps::DepthAspectMask(depth.format);
-		auto& attachment = state.depth_stencil_attachment;
+		state.width               = std::min(state.width, depth.width);
+		state.height              = std::min(state.height, depth.height);
+		state.num_layers          = std::min(state.num_layers, view.layer_count);
+		const auto aspects        = ImageViewOps::DepthAspectMask(depth.format);
+		auto&      attachment     = state.depth_stencil_attachment;
 		attachment.image_view     = depth.image_view;
 		attachment.image_layout   = layout;
 		attachment.clear_value[0] = std::bit_cast<uint32_t>(depth.depth_clear_value);
 		attachment.clear_value[1] = depth.stencil_clear_value;
-		attachment.has_depth =
-		    static_cast<bool>(aspects & vk::ImageAspectFlagBits::eDepth);
-		attachment.depth_clear = depth.depth_load_clear_enable;
-		attachment.has_stencil =
-		    static_cast<bool>(aspects & vk::ImageAspectFlagBits::eStencil);
-		attachment.stencil_clear = depth.stencil_clear_enable;
+		attachment.has_depth      = static_cast<bool>(aspects & vk::ImageAspectFlagBits::eDepth);
+		attachment.depth_clear    = depth.depth_load_clear_enable;
+		attachment.has_stencil    = static_cast<bool>(aspects & vk::ImageAspectFlagBits::eStencil);
+		attachment.stencil_clear  = depth.stencil_clear_enable;
 	}
 	if (attachment_samples == 0 ||
 	    vulkan_sample_count(attachment_samples) == vk::SampleCountFlagBits {}) {
@@ -685,6 +680,85 @@ static uint64_t VertexBufferDescriptorSize(const ShaderVertexInputBuffer& buffer
 	                           : buffer.num_records);
 }

+struct VertexBufferRange {
+	uint64_t      base_address  = 0;
+	uint64_t      requested_end = 0;
+	uint64_t      acquired_end  = 0;
+	BufferBinding binding;
+
+	[[nodiscard]] uint64_t RequestedSize() const { return requested_end - base_address; }
+};
+
+static std::vector<BufferBinding> AcquireVertexBuffers(RenderCommandBuffer&         buffer,
+                                                       const ShaderVertexInputInfo& vs_input_info) {
+	// Collect the non-empty guest vertex ranges.
+	std::vector<VertexBufferRange> ranges;
+	ranges.reserve(vs_input_info.buffers_num);
+	for (int i = 0; i < vs_input_info.buffers_num; i++) {
+		const auto& vertex = vs_input_info.buffers[i];
+		const auto  size   = VertexBufferDescriptorSize(vertex);
+		if (size == 0) {
+			continue;
+		}
+		if (vertex.addr == 0 || size > UINT64_MAX - vertex.addr) {
+			EXIT("invalid vertex buffer range: addr=0x%016" PRIx64 " size=0x%016" PRIx64 "\n",
+			     vertex.addr, size);
+		}
+		ranges.push_back({vertex.addr, vertex.addr + size});
+	}
+
+	std::ranges::sort(ranges, [](const VertexBufferRange& left, const VertexBufferRange& right) {
+		return left.base_address < right.base_address;
+	});
+
+	// Merge overlapping or touching ranges before acquiring host buffers.
+	std::vector<VertexBufferRange> merged_ranges;
+	merged_ranges.reserve(ranges.size());
+	for (const auto& range: ranges) {
+		if (!merged_ranges.empty() && merged_ranges.back().requested_end >= range.base_address) {
+			merged_ranges.back().requested_end =
+			    std::max(merged_ranges.back().requested_end, range.requested_end);
+			continue;
+		}
+		merged_ranges.push_back(range);
+	}
+
+	auto& cache = buffer.GetContext().GetBufferCache();
+	for (auto& range: merged_ranges) {
+		// PPSA20298
+		const auto size =
+		    Libs::LibKernel::Memory::ClampRangeSize(range.base_address, range.RequestedSize());
+		range.acquired_end = range.base_address + size;
+		range.binding      = cache.ObtainBuffer(buffer, range.base_address, size);
+	}
+
+	// Rebuild slot bindings, offsetting non-empty slots into their acquired merged range.
+	std::vector<BufferBinding> bindings;
+	bindings.reserve(vs_input_info.buffers_num);
+	for (int i = 0; i < vs_input_info.buffers_num; i++) {
+		const auto& vertex = vs_input_info.buffers[i];
+		const auto  size   = VertexBufferDescriptorSize(vertex);
+		if (size == 0) {
+			auto owner = cache.ObtainNullBuffer();
+			bindings.push_back({owner, owner->Handle(), 0});
+			continue;
+		}
+
+		const auto range = std::ranges::find_if(merged_ranges, [&](const VertexBufferRange& value) {
+			return vertex.addr >= value.base_address && vertex.addr < value.acquired_end;
+		});
+		if (range == merged_ranges.end()) {
+			EXIT("vertex buffer address is outside the acquired range: addr=0x%016" PRIx64 "\n",
+			     vertex.addr);
+		}
+
+		auto binding = range->binding;
+		binding.offset += vertex.addr - range->base_address;
+		bindings.push_back(std::move(binding));
+	}
+	return bindings;
+}
+
 static void SetDrawDebugPhase(RenderCommandBuffer& buffer, uint64_t submit_id,
                              const DrawCallInfo& draw, uint32_t phase) {
 	EXIT_IF(draw.name == nullptr);
@@ -736,9 +810,9 @@ static bool GetDrawTopology(const HW::UserConfig& ucfg, bool auto_draw, bool use
 }

 bool RenderExecutor::PrepareDrawRenderState(uint64_t submit_id, RenderCommandBuffer& buffer,
-                                        const DrawCallInfo& draw,
-                                        uint32_t render_target_slice_offset,
-                                        bool log_setup_phases, DrawRenderState& state) {
+                                            const DrawCallInfo& draw,
+                                            uint32_t            render_target_slice_offset,
+                                            bool log_setup_phases, DrawRenderState& state) {
 	EXIT_IF(draw.name == nullptr);
 	auto& ctx = buffer.GetRegisters();

@@ -823,37 +897,13 @@ static std::vector<BufferBinding> PrepareVertexBuffers(uint64_t
 	(void)submit_id;

 	LogDrawPhase(draw.name, "PrepareVertexBuffers");
-	std::vector<BufferBinding> bindings;
-	bindings.reserve(vs_input_info.buffers_num);
-	for (int i = 0; i < vs_input_info.buffers_num; i++) {
-		const auto& b    = vs_input_info.buffers[i];
-		const auto  size = VertexBufferDescriptorSize(b);
-		if (size == 0) {
-			auto owner = buffer.GetContext().GetBufferCache().ObtainNullBuffer();
-			bindings.push_back({owner, owner->Handle(), 0});
-		} else {
-			bindings.push_back(
-			    buffer.GetContext().GetBufferCache().ObtainBuffer(buffer, b.addr, size));
-		}
-	}
-	return bindings;
+	return AcquireVertexBuffers(buffer, vs_input_info);
 }

 static void RebindVertexBuffers(RenderCommandBuffer&         buffer,
                                const ShaderVertexInputInfo& vs_input_info,
                                std::vector<BufferBinding>&  bindings) {
-	EXIT_IF(bindings.size() != static_cast<size_t>(vs_input_info.buffers_num));
-	for (int i = 0; i < vs_input_info.buffers_num; i++) {
-		const auto& vertex = vs_input_info.buffers[i];
-		const auto  size   = VertexBufferDescriptorSize(vertex);
-		if (size == 0) {
-			auto owner  = buffer.GetContext().GetBufferCache().ObtainNullBuffer();
-			bindings[i] = {owner, owner->Handle(), 0};
-		} else {
-			bindings[i] =
-			    buffer.GetContext().GetBufferCache().ObtainBuffer(buffer, vertex.addr, size);
-		}
-	}
+	bindings = AcquireVertexBuffers(buffer, vs_input_info);
 }

 static PreparedIndexBuffer PrepareIndexBuffer(RenderCommandBuffer&         buffer,
@@ -1011,17 +1061,17 @@ static void EmitDrawPrimitives(const HW::UserConfig& ucfg, vk::CommandBuffer vk_
 }

 void RenderExecutor::ExecutePreparedDraw(uint64_t submit_id, RenderCommandBuffer& buffer,
-                                     const DrawCallInfo& draw, DrawRenderState& state,
-                                     vk::PrimitiveTopology topology, const DrawEmitInfo& emit,
-                                     const DrawIndexBufferSource& index_source,
-                                     bool log_pipeline_phase, bool set_bind_debug,
-                                     bool set_auto_debug) {
+                                         const DrawCallInfo& draw, DrawRenderState& state,
+                                         vk::PrimitiveTopology topology, const DrawEmitInfo& emit,
+                                         const DrawIndexBufferSource& index_source,
+                                         bool log_pipeline_phase, bool set_bind_debug,
+                                         bool set_auto_debug) {
 	EXIT_IF(draw.name == nullptr);
 	auto& ucfg = buffer.GetUserConfig();

 	LogDrawPhase(draw.name, "PrepareBindings");
-	auto bindings = PrepareGraphicsBindings(buffer, state.vs_input_info.stage,
-	                                        state.ps_input_info.stage, state.ps_active);
+	auto bindings        = PrepareGraphicsBindings(buffer, state.vs_input_info.stage,
+	                                               state.ps_input_info.stage, state.ps_active);
 	auto vertex_bindings = PrepareVertexBuffers(submit_id, buffer, draw, state.vs_input_info);
 	auto index_binding   = PrepareIndexBuffer(buffer, index_source);
 	RebindVertexBuffers(buffer, state.vs_input_info, vertex_bindings);
@@ -1094,10 +1144,10 @@ void RenderExecutor::ExecutePreparedDraw(uint64_t submit_id, RenderCommandBuffer
 }

 void RenderExecutor::DrawIndex(uint64_t submit_id, RenderCommandBuffer& buffer,
-                           uint32_t index_type_and_size, uint32_t index_count,
-                           const void* index_addr, uint32_t flags, uint32_t type,
-                           uint32_t instance_count, uint32_t render_target_slice_offset,
-                           int32_t vertex_offset_add, uint32_t first_instance) {
+                               uint32_t index_type_and_size, uint32_t index_count,
+                               const void* index_addr, uint32_t flags, uint32_t type,
+                               uint32_t instance_count, uint32_t render_target_slice_offset,
+                               int32_t vertex_offset_add, uint32_t first_instance) {
 	KYTY_PROFILER_FUNCTION();

 	EXIT_IF(buffer.IsInvalid());
@@ -1228,11 +1278,10 @@ void RenderExecutor::DrawIndex(uint64_t submit_id, RenderCommandBuffer& buffer,
 }

 // NOLINTNEXTLINE(readability-function-cognitive-complexity)
-void RenderExecutor::DrawAuto(uint64_t submit_id, RenderCommandBuffer& buffer,
-                              uint32_t index_count,
-                          uint32_t flags, uint32_t render_target_slice_offset,
-                          uint32_t instance_count, uint32_t first_vertex,
-                          uint32_t first_instance) {
+void RenderExecutor::DrawAuto(uint64_t submit_id, RenderCommandBuffer& buffer, uint32_t index_count,
+                              uint32_t flags, uint32_t render_target_slice_offset,
+                              uint32_t instance_count, uint32_t first_vertex,
+                              uint32_t first_instance) {
 	KYTY_PROFILER_FUNCTION();

 	EXIT_IF(buffer.IsInvalid());
@@ -1290,7 +1339,8 @@ void RenderExecutor::DrawAuto(uint64_t submit_id, RenderCommandBuffer& buffer,
 	                         instance_count,  first_instance};

 	DrawRenderState state {};
-	if (!PrepareDrawRenderState(submit_id, buffer, draw, render_target_slice_offset, false, state)) {
+	if (!PrepareDrawRenderState(submit_id, buffer, draw, render_target_slice_offset, false,
+	                            state)) {
 		ResetBindings();
 		return;
 	}
@@ -1340,7 +1390,7 @@ void RenderExecutor::DrawAuto(uint64_t submit_id, RenderCommandBuffer& buffer,
 }

 bool RenderExecutor::ResolveColorTargets(uint64_t submit_id, RenderCommandBuffer& buffer,
-                                     uint32_t render_target_slice_offset) {
+                                         uint32_t render_target_slice_offset) {
 	const auto& hw = buffer.GetRegisters();
 	if (hw.GetColorControl().mode != 3) {
 		return false;
@@ -1369,8 +1419,7 @@ bool RenderExecutor::ResolveColorTargets(uint64_t submit_id, RenderCommandBuffer
 	cache.MarkGpuWritten(dst.image_id);
 	auto& source      = cache.GetImage(src.image_id);
 	auto& destination = cache.GetImage(dst.image_id);
-	destination.Resolve(source,
-	                    {src.base_mip_level, 1, src.base_array_layer, 1},
+	destination.Resolve(source, {src.base_mip_level, 1, src.base_array_layer, 1},
 	                    {dst.base_mip_level, 1, dst.base_array_layer, 1});
 	return true;
 }
@@ -784,10 +784,10 @@ private:
 			if (incoming.empty()) {
 				return ScalarProvenance::Undefined;
 			}
-			if (incoming.size() == 1) {
-				return incoming[0];
-			}
 			if (*phi == ScalarProvenance::Undefined) {
+				if (incoming.size() == 1) {
+					return incoming[0];
+				}
 				*phi = AddValue({ScalarValueOp::Phi, block.start_pc});
 			}
 			m_graph.values[*phi].phi_args = std::move(incoming);
@@ -238,8 +238,9 @@ static std::filesystem::path ResolvePathIgnoringCase(const std::filesystem::path
 	}

 	// Preserve unmatched components for the caller's ENOENT path.
-	std::filesystem::path resolved = path.has_root_path() ? path.root_path() : std::filesystem::path(".");
-	bool                  matched  = true;
+	std::filesystem::path resolved =
+	    path.has_root_path() ? path.root_path() : std::filesystem::path(".");
+	bool matched = true;

 	for (const auto& component: path.relative_path()) {
 		if (component.empty()) {
@@ -568,11 +569,11 @@ int64_t KYTY_SYSV_ABI KernelRead(int d, void* buf, size_t nbytes) {

 	file->mutex.Lock();

-	bool     is_invalid = file->f.IsInvalid();
-	const auto pos       = file->f.Tell();
-	const auto file_size = file->f.Size();
-	const auto remaining = pos < file_size ? file_size - pos : 0;
-	Memory::PrepareHostWrite(reinterpret_cast<uint64_t>(buf),
+	bool       is_invalid = file->f.IsInvalid();
+	const auto pos        = file->f.Tell();
+	const auto file_size  = file->f.Size();
+	const auto remaining  = pos < file_size ? file_size - pos : 0;
+	Memory::InvalidateMemory(reinterpret_cast<uint64_t>(buf),
 	                         std::min<uint64_t>(nbytes, remaining));
 	uint32_t bytes_read = 0;
 	file->f.Read(buf, static_cast<uint32_t>(nbytes), &bytes_read);
@@ -692,13 +693,12 @@ int64_t KYTY_SYSV_ABI KernelPread(int d, void* buf, size_t nbytes, int64_t offse

 	file->mutex.Lock();

-	bool     is_invalid = file->f.IsInvalid();
-	auto     pos        = file->f.Tell();
-	const auto file_size = file->f.Size();
-	const auto remaining = static_cast<uint64_t>(offset) < file_size
-	                           ? file_size - static_cast<uint64_t>(offset)
-	                           : 0;
-	Memory::PrepareHostWrite(reinterpret_cast<uint64_t>(buf),
+	bool       is_invalid = file->f.IsInvalid();
+	auto       pos        = file->f.Tell();
+	const auto file_size  = file->f.Size();
+	const auto remaining =
+	    static_cast<uint64_t>(offset) < file_size ? file_size - static_cast<uint64_t>(offset) : 0;
+	Memory::InvalidateMemory(reinterpret_cast<uint64_t>(buf),
 	                         std::min<uint64_t>(nbytes, remaining));
 	uint32_t bytes_read = 0;
 	file->f.Seek(offset);
@@ -66,8 +66,8 @@ constexpr int      PAGE_TABLE_POOL_ENTRIES =
    static_cast<int>(PAGE_TABLE_POOL_SIZE / PAGE_TABLE_GRANULARITY);
 constexpr uint64_t DEFAULT_FLEXIBLE_MEMORY_SIZE = 4ull * 1024ull * 1024ull * 1024ull;

-static uint64_t g_flexible_memory_size = DEFAULT_FLEXIBLE_MEMORY_SIZE;
-static Graphics::GpuResourceManager* g_gpu_resources = nullptr;
+static uint64_t                      g_flexible_memory_size = DEFAULT_FLEXIBLE_MEMORY_SIZE;
+static Graphics::GpuResourceManager* g_gpu_resources        = nullptr;

 static Graphics::GpuResourceManager& GetGpuResources() {
 	EXIT_IF(g_gpu_resources == nullptr);
@@ -528,6 +528,42 @@ public:
 		return false;
 	}

+	uint64_t ClampRangeSize(uint64_t virtual_addr, uint64_t size) {
+		Common::LockGuard lock(m_mutex);
+
+		if (virtual_addr == 0 || size == 0 || size > UINT64_MAX - virtual_addr) {
+			return 0;
+		}
+
+		auto vma = std::upper_bound(
+		    m_ranges.begin(), m_ranges.end(), virtual_addr,
+		    [](uint64_t value, const Range& range) { return value < range.start; });
+		if (vma == m_ranges.begin()) {
+			return 0;
+		}
+		--vma;
+
+		const auto vma_end = End(vma->start, vma->size);
+		if (virtual_addr < vma->start || virtual_addr >= vma_end ||
+		    !IsCommittedRangeType(vma->type)) {
+			return 0;
+		}
+
+		uint64_t clamped_size = std::min(size, vma_end - virtual_addr);
+		uint64_t expected     = virtual_addr + clamped_size;
+		++vma;
+
+		while (vma != m_ranges.end() && vma->start == expected && IsCommittedRangeType(vma->type) &&
+		       clamped_size < size) {
+			const auto chunk = std::min(size - clamped_size, vma->size);
+			clamped_size += chunk;
+			expected += chunk;
+			++vma;
+		}
+
+		return clamped_size;
+	}
+
 	uint64_t CountPageTableEntries(bool gpu) {
 		Common::LockGuard lock(m_mutex);

@@ -884,6 +920,23 @@ bool TryReadBacking(uint64_t vaddr, void* data, uint64_t size) {
 	       g_direct_memory_backing->TryReadBacking(vaddr, data, size);
 }

+uint64_t ClampRangeSize(uint64_t vaddr, uint64_t size) {
+	EXIT_IF(g_virtual_ranges == nullptr);
+
+	const auto clamped_size = g_virtual_ranges->ClampRangeSize(vaddr, size);
+	if (clamped_size == 0) {
+		EXIT("Memory: attempted to access invalid address 0x%016" PRIx64 " with size 0x%016" PRIx64
+		     "\n",
+		     vaddr, size);
+	}
+	if (clamped_size != size) {
+		LOGF("Memory: clamped buffer range addr=0x%016" PRIx64 " size=0x%016" PRIx64
+		     " to 0x%016" PRIx64 "\n",
+		     vaddr, size, clamped_size);
+	}
+	return clamped_size;
+}
+
 void WriteBacking(uint64_t vaddr, const void* data, uint64_t size) noexcept {
 	if (!TryWriteBacking(vaddr, data, size)) {
 		EXIT("Memory: required direct-backing write failed, addr=0x%016" PRIx64
@@ -892,11 +945,11 @@ void WriteBacking(uint64_t vaddr, const void* data, uint64_t size) noexcept {
 	}
 }

-void PrepareHostWrite(uint64_t vaddr, uint64_t size) {
+void InvalidateMemory(uint64_t vaddr, uint64_t size) {
 	if (size == 0) {
 		return;
 	}
-	GetGpuResources().PrepareHostWrite(vaddr, size);
+	(void)GetGpuResources().InvalidateMemory(vaddr, size);
 }

 void InstallGpuResources(Graphics::GpuResourceManager* resources) noexcept {
@@ -1915,24 +1968,24 @@ int32_t KYTY_SYSV_ABI KernelMapNamedFlexibleMemory(void** addr_in_out, size_t le

 	EXIT_NOT_IMPLEMENTED(addr_in_out == nullptr);

-	constexpr size_t   PAGE_SIZE         = 0x4000;
-	constexpr size_t   MAXIMUM_NAME_SIZE = 32;
-	constexpr uint64_t DEFAULT_PS5_BASE  = 0x200000000;
-	constexpr int GUEST_MAP_FIXED        = 0x10;
-	constexpr int GUEST_MAP_SHARED       = 0x01;
-	constexpr int GUEST_MAP_PRIVATE      = 0x02;
-	constexpr int GUEST_MAP_NO_OVERWRITE = 0x80;
-	constexpr int GUEST_MAP_VOID         = 0x100;
-	constexpr int GUEST_MAP_STACK        = 0x400;
-	constexpr int GUEST_MAP_NO_SYNC      = 0x800;
-	constexpr int GUEST_MAP_ANON         = 0x1000;
-	constexpr int GUEST_MAP_UNKNOWN_8000 = 0x8000;
-	constexpr int GUEST_MAP_NO_CORE      = 0x20000;
-	constexpr int GUEST_MAP_NO_COALESCE  = 0x400000;
-	constexpr int SUPPORTED_MAP_BITS =
-	    GUEST_MAP_SHARED | GUEST_MAP_PRIVATE | GUEST_MAP_FIXED | GUEST_MAP_NO_OVERWRITE |
-	    GUEST_MAP_VOID | GUEST_MAP_STACK | GUEST_MAP_NO_SYNC | GUEST_MAP_ANON |
-	    GUEST_MAP_UNKNOWN_8000 | GUEST_MAP_NO_CORE | GUEST_MAP_NO_COALESCE;
+	constexpr size_t   PAGE_SIZE              = 0x4000;
+	constexpr size_t   MAXIMUM_NAME_SIZE      = 32;
+	constexpr uint64_t DEFAULT_PS5_BASE       = 0x200000000;
+	constexpr int      GUEST_MAP_FIXED        = 0x10;
+	constexpr int      GUEST_MAP_SHARED       = 0x01;
+	constexpr int      GUEST_MAP_PRIVATE      = 0x02;
+	constexpr int      GUEST_MAP_NO_OVERWRITE = 0x80;
+	constexpr int      GUEST_MAP_VOID         = 0x100;
+	constexpr int      GUEST_MAP_STACK        = 0x400;
+	constexpr int      GUEST_MAP_NO_SYNC      = 0x800;
+	constexpr int      GUEST_MAP_ANON         = 0x1000;
+	constexpr int      GUEST_MAP_UNKNOWN_8000 = 0x8000;
+	constexpr int      GUEST_MAP_NO_CORE      = 0x20000;
+	constexpr int      GUEST_MAP_NO_COALESCE  = 0x400000;
+	constexpr int SUPPORTED_MAP_BITS = GUEST_MAP_SHARED | GUEST_MAP_PRIVATE | GUEST_MAP_FIXED |
+	                                   GUEST_MAP_NO_OVERWRITE | GUEST_MAP_VOID | GUEST_MAP_STACK |
+	                                   GUEST_MAP_NO_SYNC | GUEST_MAP_ANON | GUEST_MAP_UNKNOWN_8000 |
+	                                   GUEST_MAP_NO_CORE | GUEST_MAP_NO_COALESCE;

 	if (len == 0 || (len & (PAGE_SIZE - 1)) != 0) {
 		return KERNEL_ERROR_EINVAL;
@@ -3294,7 +3347,7 @@ int KYTY_SYSV_ABI KernelReserveVirtualRange(void** addr, size_t len, int flags,
 	     "\t alignment = 0x%016" PRIx64 "\n",
 	     in_addr, len, flags, alignment);

-	constexpr size_t PAGE_SIZE        = 0x4000;
+	constexpr size_t PAGE_SIZE              = 0x4000;
 	constexpr int    GUEST_MAP_FIXED        = 0x10;
 	constexpr int    GUEST_MAP_NO_OVERWRITE = 0x80;

@@ -99,13 +99,14 @@ struct KernelMemoryPoolBlockStats {
 static_assert(sizeof(KernelMemoryPoolBlockStats) == 16,
              "KernelMemoryPoolBlockStats struct size is incorrect");

-void RegisterCallbacks(callback_func_t alloc_func, callback_func_t free_func);
-void SetFlexibleMemorySize(uint64_t size);
-bool TryWriteBacking(uint64_t vaddr, const void* data, uint64_t size);
-bool TryReadBacking(uint64_t vaddr, void* data, uint64_t size);
-void WriteBacking(uint64_t vaddr, const void* data, uint64_t size) noexcept;
-void PrepareHostWrite(uint64_t vaddr, uint64_t size);
-void InstallGpuResources(Graphics::GpuResourceManager* resources) noexcept;
+void                   RegisterCallbacks(callback_func_t alloc_func, callback_func_t free_func);
+void                   SetFlexibleMemorySize(uint64_t size);
+bool                   TryWriteBacking(uint64_t vaddr, const void* data, uint64_t size);
+bool                   TryReadBacking(uint64_t vaddr, void* data, uint64_t size);
+[[nodiscard]] uint64_t ClampRangeSize(uint64_t vaddr, uint64_t size);
+void                   WriteBacking(uint64_t vaddr, const void* data, uint64_t size) noexcept;
+void                   InvalidateMemory(uint64_t vaddr, uint64_t size);
+void                   InstallGpuResources(Graphics::GpuResourceManager* resources) noexcept;
 [[nodiscard]] bool HandleGpuFault(Graphics::PageFaultAccess access, uint64_t fault_vaddr) noexcept;

 int KYTY_SYSV_ABI KernelMapNamedFlexibleMemory(void** addr_in_out, size_t len, int prot, int flags,
@@ -34,7 +34,7 @@ namespace LibNet {

 LIB_VERSION("Net", 1, "Net", 1, 1);

-static thread_local int g_net_errno = 0;
+static thread_local int   g_net_errno = 0;
 static constexpr uint32_t g_in6addr_any[4] {};

 namespace Net = Network::Net;
@@ -1398,6 +1398,7 @@ LIB_DEFINE(InitNet_1_NpManager) {
 	LIB_FUNC("O80NrhUOPGY", NpManager::NpCheckPremium);
 	LIB_FUNC("eQH7nWPcAgc", NpManager::NpGetState);
 	LIB_FUNC("e-ZuhGEoeC4", NpManager::NpGetNpReachabilityState);
+	LIB_FUNC("Oad3rvY-NJQ", NpManager::NpHasSignedUp);
 }

 } // namespace LibNpManager
@@ -19,7 +19,7 @@

 // POSIX uses plain int file descriptors for sockets; provide the Winsock spellings
 // the shared (non-guarded) code paths reference.
-using SOCKET                   = int;
+using SOCKET                           = int;
 static constexpr SOCKET INVALID_SOCKET = -1;
 #endif

@@ -820,10 +820,10 @@ struct NetEtherAddr {
 };

 #if defined(_WIN32)
-using NativeSocket = SOCKET;
+using NativeSocket                                  = SOCKET;
 static constexpr NativeSocket INVALID_NATIVE_SOCKET = INVALID_SOCKET;
 #else
-using NativeSocket = int;
+using NativeSocket                                  = int;
 static constexpr NativeSocket INVALID_NATIVE_SOCKET = -1;
 #endif

@@ -1738,7 +1738,8 @@ int KYTY_SYSV_ABI Accept(int s, void* addr, uint32_t* addrlen) {
 #if defined(_WIN32)
 	sockaddr_storage host_addr {};
 	int              host_addrlen = sizeof(host_addr);
-	NativeSocket accepted = ::accept(socket, reinterpret_cast<sockaddr*>(&host_addr), &host_addrlen);
+	NativeSocket     accepted =
+	    ::accept(socket, reinterpret_cast<sockaddr*>(&host_addr), &host_addrlen);
 	if (accepted == INVALID_NATIVE_SOCKET) {
 		return SetPosixSocketError();
 	}
@@ -3753,8 +3754,6 @@ int KYTY_SYSV_ABI NpGetState(int user_id, uint32_t* state) {
 int KYTY_SYSV_ABI NpGetNpReachabilityState(int user_id, uint32_t* state) {
 	PRINT_NAME();

-	constexpr int np_error_invalid_argument = -2141913085; /* 0x80550003 */
-
 	if (state == nullptr) {
 		return np_error_invalid_argument;
 	}
@@ -3767,6 +3766,20 @@ int KYTY_SYSV_ABI NpGetNpReachabilityState(int user_id, uint32_t* state) {
 	return OK;
 }

+int KYTY_SYSV_ABI NpHasSignedUp(int user_id, bool* has_signed_up) {
+	PRINT_NAME();
+
+	if (has_signed_up == nullptr) {
+		return np_error_invalid_argument;
+	}
+
+	LOGF("\t user_id = %d\n", user_id);
+
+	*has_signed_up = false;
+
+	return OK;
+}
+
 } // namespace NpManager

 } // namespace Libs::Network
@@ -184,6 +184,7 @@ int KYTY_SYSV_ABI  NpCheckPremium(int req_id, const NpCheckPremiumParameter* par
                                  NpCheckPremiumResult* result);
 int KYTY_SYSV_ABI  NpGetState(int user_id, uint32_t* state);
 int KYTY_SYSV_ABI  NpGetNpReachabilityState(int user_id, uint32_t* state);
+int KYTY_SYSV_ABI  NpHasSignedUp(int user_id, bool* has_signed_up);

 } // namespace NpManager

@@ -669,6 +669,8 @@ void TestRangeSet() {
  ranges.Add(0x1000, 0x80);
  ranges.Add(0x1080, 0x80);
  ranges.Add(0x1200, 0x40);
+  Check(ranges.Contains(0x1010, 0xe0) && !ranges.Contains(0x1010, 0x200),
+        "range set containment did not require full coverage");
  auto intersections = ranges.Intersections(0x1070, 0x1b0);
  Check(intersections.size() == 2 && intersections[0].address == 0x1070 &&
            intersections[0].size == 0x90 && intersections[1].address == 0x1200 &&
@@ -682,6 +684,46 @@ void TestRangeSet() {
        "range set subtraction did not preserve both exact tails");
 }

+void TestRangeInvalidation() {
+  constexpr uintptr_t base = 0x0000000201000000ull;
+  TrackerHarness harness;
+  auto &tracker = harness.tracker;
+  auto &page_manager = harness.page_manager;
+  constexpr uint64_t size = Libs::Graphics::TRACKER_REGION_SIZE * 2;
+  auto *memory = static_cast<uint8_t *>(
+      VirtualAlloc(reinterpret_cast<void *>(base), size, MEM_RESERVE | MEM_COMMIT,
+                   PAGE_READWRITE));
+  Check(memory == reinterpret_cast<void *>(base),
+        "range invalidation allocation failed");
+  const auto address = reinterpret_cast<uint64_t>(memory);
+  page_manager.OnGpuMap(address, size);
+
+  tracker.ForEachUploadRange(
+      address, size, true, [](uint64_t, uint64_t) noexcept {},
+      []() noexcept {});
+  Check(tracker.IsRegionGpuModified(address, size) && !IsWritable(memory),
+        "range invalidation setup did not establish GPU ownership");
+
+  uint32_t flushes = 0;
+  tracker.InvalidateRegion(address + 16, size - 32, [&] {
+    flushes++;
+    tracker.ForEachDownloadRange<true>(
+        address + 16, size - 32, [](uint64_t, uint64_t) noexcept {});
+  });
+  Check(flushes == 1 && !tracker.IsRegionGpuModified(address, size) &&
+            tracker.IsRegionCpuModified(address, size) && IsWritable(memory) &&
+            IsWritable(memory + size - 1),
+        "range invalidation did not batch ownership transfer across regions");
+
+  tracker.InvalidateRegion(address + 16, size - 32, [&] { flushes++; });
+  Check(flushes == 1,
+        "clean range invalidation unnecessarily requested a GPU flush");
+  tracker.UntrackMemory(address, size);
+  page_manager.OnGpuUnmap(address, size);
+  Check(VirtualFree(memory, 0, MEM_RELEASE) != 0,
+        "range invalidation VirtualFree failed");
+}
+
 void TestCpuDirtyUploadAndFault() {
  constexpr uintptr_t base = 0x0000000200010000ull;
  TrackerHarness harness;
@@ -1207,6 +1249,7 @@ int main(int argc, char **argv) {
  TestSameSlabTrackerArbitration();
  TestSharedMetadataAndImagePageFault();
  TestRangeSet();
+  TestRangeInvalidation();
  TestGpuDirtyBits();
  TestCrossRegionUpload();
  TestFaultDuringUploadRemainsDirty();
@@ -301,36 +301,6 @@ void TestSharedWatcherFault() {
  Check(VirtualFree(memory, 0, MEM_RELEASE) != 0, "VirtualFree failed");
 }

-void TestMappedHostWriteRange() {
-  FaultContext context;
-  PageManager manager(InvalidateFault, &context);
-  context.manager = &manager;
-  const auto page_size = manager.GetPageSize();
-  auto *memory = Allocate(page_size * 3);
-  const auto address = reinterpret_cast<uint64_t>(memory);
-
-  manager.OnGpuMap(address, page_size);
-  manager.OnGpuMap(address + page_size * 2, page_size);
-  manager.UpdatePageWatchers(true, address, page_size);
-  manager.UpdatePageWatchers(true, address + page_size * 2, page_size);
-  Check(manager.HasAnyMapping(address + 16, page_size * 3 - 32),
-        "host-write range did not find partial GPU mappings");
-  Check(!manager.IsMapped(address, page_size * 3),
-        "partial GPU mappings were reported as a full mapping");
-  Check(manager.HandleWriteRange(address + 16, page_size * 3 - 32),
-        "mapped host-write range was not handled");
-  Check(context.calls.load(std::memory_order_relaxed) == 2,
-        "host-write range did not invalidate each mapped watched page");
-  Check(IsWritable(memory) && IsWritable(memory + page_size * 2),
-        "host-write range did not restore writable protection");
-
-  manager.OnGpuUnmap(address, page_size);
-  manager.OnGpuUnmap(address + page_size * 2, page_size);
-  Check(!manager.HasAnyMapping(address, page_size * 3),
-        "host-write range retained stale GPU mappings");
-  Check(VirtualFree(memory, 0, MEM_RELEASE) != 0, "VirtualFree failed");
-}
-
 void TestReadWriteWatcherFault() {
  FaultContext context;
  PageManager manager(InvalidateFault, &context);
@@ -855,7 +825,6 @@ int main(int argc, char **argv) {
  }
  TestWatchFaultAndUnwatch();
  TestSharedWatcherFault();
-  TestMappedHostWriteRange();
  TestReadWriteWatcherFault();
  TestPermittedMappedLateFaultsResume();
  TestPartialMappingUnmapPreservesTokens();
@@ -186,6 +186,39 @@ void TestCfgPhi() {
 	      "acyclic control-flow descriptor phi was not classified dynamic");
 }

+void TestNestedLoopPhiConvergence() {
+	Program program;
+	program.blocks.resize(4);
+	program.blocks[0].predecessors = {1};
+	program.blocks[0].successors   = {1};
+	program.blocks[1].predecessors = {0, 3};
+	program.blocks[1].successors   = {0, 2};
+	program.blocks[2].predecessors = {1};
+	program.blocks[2].successors   = {3};
+	program.blocks[3].predecessors = {2};
+	program.blocks[3].successors   = {1};
+	Instruction increment;
+	increment.op                     = Opcode::IAddU32;
+	increment.dst                    = Sgpr(0);
+	increment.src[0]                 = Sgpr(0);
+	increment.src[1]                 = Imm(1);
+	increment.src_count              = 2;
+	program.blocks[0].instructions   = {increment};
+	program.blocks[2].instructions   = {BufferUse(4, 0)};
+
+	std::string error;
+	Check(BuildScalarProvenance(program, &error), error.c_str());
+	const auto* source =
+	    GetDescriptorSource(program, program.blocks[2].instructions[0].memory.resource_source);
+	Check(source != nullptr, "nested-loop descriptor source was not attached");
+	const auto  value_id = source->dwords[0];
+	const auto& phi      = Value(program, value_id);
+	Check(phi.op == ScalarValueOp::Phi && phi.phi_args.size() == 2 &&
+	          ((phi.phi_args[0] == value_id && phi.phi_args[1] != value_id) ||
+	           (phi.phi_args[1] == value_id && phi.phi_args[0] != value_id)),
+	      "nested loop did not retain its recursive scalar provenance phi");
+}
+
 void TestDiamondReadPathsAreDynamic() {
 	std::array<uint32_t, 1> left  = {0x11111111u};
 	std::array<uint32_t, 1> right = {0x22222222u};
@@ -1045,6 +1078,7 @@ int main() {
 	try {
 		TestPerUseDescriptorDefinitions();
 		TestCfgPhi();
+		TestNestedLoopPhiConvergence();
 		TestDiamondReadPathsAreDynamic();
 		TestEquivalentConstantPhiIsStatic();
 		TestWideMoveInvalidatesAndCopiesBothDwords();
@@ -1679,7 +1679,9 @@ public:
      Require("GpuCommandLane", "processor fault context",
              Gpu::CurrentCommandProcessor() == &processor,
              "processor resource test lost its command context");
-      resources.PrepareHostWrite(fault_base, sizeof(uint32_t));
+      Require("GpuCommandLane", "processor memory invalidation",
+              resources.InvalidateMemory(fault_base, sizeof(uint32_t)),
+              "processor memory invalidation did not find its mapped range");
    });
    resources.UnmapMemory(fault_base, fault_size, GpuAccess::ReadWrite);
    Require("GpuCommandLane", "processor fault unmap",
@@ -15218,7 +15220,7 @@ void CheckRenderTargetFormatContract() {
      resource.kind = ShaderRecompiler::IR::ResourceKind::Image;
    } else if (std::strcmp(kind, "storage-no-write") == 0) {
      resource.written = false;
-    } else if (std::strcmp(kind, "storage-atomic") == 0) {
+    } else if (std::strcmp(kind, "storage-nonuint-atomic") == 0) {
      resource.atomic = true;
    } else if (std::strcmp(kind, "storage-compare") == 0) {
      resource.depth_compare = true;
@@ -15435,6 +15437,12 @@ void CheckSampledColorViews() {
  Require("SampledColorViews", "write-only uint 2D-array storage resource",
          IsSupportedStorageImageResource(storage_resource),
          "basic write-only uint 2D-array storage resource was rejected");
+  storage_resource.dimension = ShaderRecompiler::Decoder::ImageDimension::Dim2D;
+  storage_resource.read = true;
+  storage_resource.atomic = true;
+  Require("SampledColorViews", "atomic uint 2D storage resource",
+          IsSupportedStorageImageResource(storage_resource),
+          "atomic uint storage resource was rejected");

  char path[MAX_PATH]{};
  Require("SampledColorViews", "host",
@@ -15444,7 +15452,7 @@ void CheckSampledColorViews() {
       {"sampled-invalid-selector", "sampled-incompatible-format",
        "sampled-invalid-high", "sampled-depth-format", "sampled-depth-swizzle",
        "storage-incompatible-format", "storage-kind", "storage-no-write",
-        "storage-atomic", "storage-compare", "storage-mip", "storage-dimension",
+        "storage-nonuint-atomic", "storage-compare", "storage-mip", "storage-dimension",
        "volume-mip-count", "volume-slice-range"}) {
    std::string command =
        std::string("\"") + path + "\" --image-view-death " + kind;
@@ -16153,6 +16161,19 @@ ShaderTextureResource BasicUintVolumeStorageTextureDescriptor() {
           0x00700000u, 0x00000000u, 0x00000000u}};
 }

+ShaderRecompiler::IR::ImageResource AtomicStorageTextureResource() {
+  auto resource = BasicLinearStorageTextureResource();
+  resource.kind = ShaderRecompiler::IR::ResourceKind::StorageImageUint;
+  resource.read = true;
+  resource.atomic = true;
+  return resource;
+}
+
+ShaderTextureResource AtomicStorageTextureDescriptor() {
+  return {{0x304bb700u, 0xc1400000u, 0x0000001fu, 0x91b00204u, 0x00000000u,
+           0x00700000u, 0x00000000u, 0x00000000u}};
+}
+
 [[noreturn]] void RunStorageTextureDescriptorDeathCase(const char *kind) {
  auto resource = BasicStorageTextureResource();
  auto descriptor = BasicStorageTextureDescriptor();
@@ -16214,6 +16235,12 @@ ShaderTextureResource BasicUintVolumeStorageTextureDescriptor() {
  } else if (std::strcmp(kind, "uint-resource-float-format") == 0) {
    resource = BasicUintArrayStorageTextureResource();
    descriptor = BasicArrayStorageTextureDescriptor();
+  } else if (std::strcmp(kind, "atomic-format") == 0) {
+    resource = AtomicStorageTextureResource();
+    descriptor = AtomicStorageTextureDescriptor();
+    descriptor.fields[1] =
+        (descriptor.fields[1] & ~0x1ff00000u) |
+        (Prospero::GpuEnumValue(Prospero::BufferFormat::k8UInt) << 20u);
  } else if (std::strcmp(kind, "depth-tile-read") == 0) {
    resource = Ppsa14053DepthTileStorageTextureResource();
    descriptor = Ppsa14053DepthTileStorageTextureDescriptor();
@@ -16297,7 +16324,7 @@ void CheckBasicStorageTextureDescriptor() {
      "PPSA06228 R11G11B10 storage descriptor fixture is malformed");
  ValidateStorageTexture(BasicBgraStorageTextureResource(), r11g11b10,
                         0x870000);
-  ValidateStorageColorView(vk::Format::eB10G11R11UfloatPack32,
+  ValidateStorageColorView(vk::Format::eB8G8R8A8Unorm,
                           vk::Format::eB10G11R11UfloatPack32,
                           r11g11b10.DstSelXYZW());

@@ -16588,6 +16615,18 @@ void CheckBasicStorageTextureDescriptor() {
          IsValidImageSwizzle(DstSel(4, 4, 4, 4)),
          "single-channel replicated destination selection was rejected");

+  const auto atomic = AtomicStorageTextureDescriptor();
+  Require("BasicStorageTexture", "atomic R32_UINT descriptor",
+          atomic.Width5() + 1u == 128 && atomic.Height5() + 1u == 1 &&
+              atomic.Depth() + 1u == 1 &&
+              atomic.Type() ==
+                  Prospero::GpuEnumValue(Prospero::ImageType::kColor2D) &&
+              atomic.Format() ==
+                  Prospero::GpuEnumValue(Prospero::BufferFormat::k32UInt) &&
+              atomic.DstSelXYZW() == DstSel(4, 0, 0, 1),
+          "PPSA22102 image-atomic descriptor fixture is malformed");
+  ValidateStorageTexture(AtomicStorageTextureResource(), atomic, 0x10000);
+
  char path[MAX_PATH]{};
  Require("BasicStorageTexture", "host",
          GetModuleFileNameA(nullptr, path, MAX_PATH) != 0,
@@ -16596,7 +16635,7 @@ void CheckBasicStorageTextureDescriptor() {
       {"resource", "type", "tile", "mip", "swizzle", "linear-rgb1-read",
        "bgra-read", "r16-float-read", "r8-unorm-read", "yzwx-read",
        "reserved-swizzle", "array-base-out-of-range", "array-mip-view",
-        "reserved", "uint-format", "uint-resource-float-format",
+        "reserved", "uint-format", "uint-resource-float-format", "atomic-format",
        "depth-tile-read", "depth-tile-extent", "depth-tile-fmask"}) {
    std::string command = std::string("\"") + path +
                          "\" --storage-texture-descriptor-death " + kind;
@@ -405,6 +405,10 @@ void TestDirectMapQueryOffsetAndPartialMunmap() {
 	      "TryReadBacking should reject a range crossing an unmapped span");
 	Check(test, rejected_read == transaction_sentinel,
 	      "failed backing reads must not modify a destination prefix");
+	Check(test,
+	      Libs::LibKernel::Memory::ClampRangeSize(base + SceKernelPageSize - 0xf30, 0x1560) ==
+	          0xf30,
+	      "ClampRangeSize did not stop at an unmapped span");

 	info = Query(test, base + SceKernelPageSize, SceKernelVqFindNext);
 	ExpectRange(test, info, base + SceKernelPageSize * 2, base + SceKernelPageSize * 4,
@@ -473,6 +477,11 @@ void TestMunmapAcrossAdjacentFlexibleMappings() {
 	            &right, SceKernelPageSize, SceKernelProtCpuRw, SceKernelMapFixed, "adjacent_right"),
 	        "KernelMapNamedFlexibleMemory(right)");

+	Check(test,
+	      Libs::LibKernel::Memory::ClampRangeSize(base + SceKernelPageSize - 0x100, 0x200) ==
+	          0x200,
+	      "ClampRangeSize did not cross adjacent committed mappings");
+
 	CheckOk(test, Libs::LibKernel::Memory::KernelMunmap(base, SceKernelPageSize * 2),
 	        "KernelMunmap(adjacent mappings)");
 	Check(test, AvailableFlexibleMemory(test) == baseline,
Author	SHA1	Message	Date
ClaxtenandGitHub	e91dd39cb0	Drop redundant PROT_NONE tracking in reserve paths for Linux (#122 ) src: platform: Linux: Drop redundant PROT_NONE tracking in reserve paths * Some UE4 games, such as The Pathless, reserve a 512 GiB virtual address range during libc startup. Tracking every 4 KiB page causes a long delay and is unnecessary since the range is already PROT_NONE, and untracked pages are treated as NoAccess. Signed-off-by: Claxten <claxten10@gmail.com>	2026-07-30 00:00:21 +02:00
nmzik	cc76827e63	Fix vertex buffer ranges crossing memory mappings	2026-07-29 21:05:24 +02:00
nmzik	832bc84100	fix(shader): stabilize scalar provenance phis in cyclic CFGs	2026-07-29 21:05:24 +02:00
nmzik	65a0f0baa7	NpManager ABI	2026-07-29 21:05:24 +02:00
nmzik	b9ae2537ef	renderer: broaden compatibility	2026-07-29 18:47:26 +02:00
nmzik	0b9edaa721	graphics: broaden storage image atomic compatibility	2026-07-29 18:47:24 +02:00
nmzik	8a244677d7	fix(renderer): resolve delayed GPU page faults through buffer and texture caches	2026-07-29 18:47:19 +02:00
nmzikandGitHub	f6e01e5403	Optimize bulk memory invalidation (#124 ) Build and Release KytyPS5 / Build KytyPS5 (Windows) (push) Canceled after 0s Details Build and Release KytyPS5 / Build KytyPS5 (macOS) (push) Canceled after 0s Details Build and Release KytyPS5 / Build KytyPS5 (Linux) (push) Canceled after 0s Details Build and Release KytyPS5 / Release KytyPS5 (push) Canceled after 0s Details * Per page -> per range search (optimization)	2026-07-29 05:09:36 +02:00