Memory/RasterizerCache: Ignore unmapped memory regions when caching physical regions.
Not all physical regions need to be mapped into the address space of every process, for example, system modules do not have a VRAM mapping. This fixes a crash when loading applets and system modules.
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@ -316,8 +316,15 @@ void RasterizerMarkRegionCached(PAddr start, u32 size, int count_delta) {
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for (unsigned i = 0; i < num_pages; ++i, paddr += PAGE_SIZE) {
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boost::optional<VAddr> maybe_vaddr = PhysicalToVirtualAddress(paddr);
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if (!maybe_vaddr)
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// While the physical <-> virtual mapping is 1:1 for the regions supported by the cache,
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// some games (like Pokemon Super Mystery Dungeon) will try to use textures that go beyond
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// the end address of VRAM, causing the Virtual->Physical translation to fail when flushing
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// parts of the texture.
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if (!maybe_vaddr) {
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LOG_ERROR(HW_Memory,
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"Trying to flush a cached region to an invalid physical address %08X", paddr);
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continue;
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}
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VAddr vaddr = *maybe_vaddr;
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u8& res_count = current_page_table->cached_res_count[vaddr >> PAGE_BITS];
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@ -329,6 +336,10 @@ void RasterizerMarkRegionCached(PAddr start, u32 size, int count_delta) {
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if (res_count == 0) {
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PageType& page_type = current_page_table->attributes[vaddr >> PAGE_BITS];
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switch (page_type) {
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case PageType::Unmapped:
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// It is not necessary for a process to have this region mapped into its address
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// space, for example, a system module need not have a VRAM mapping.
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break;
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case PageType::Memory:
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page_type = PageType::RasterizerCachedMemory;
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current_page_table->pointers[vaddr >> PAGE_BITS] = nullptr;
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@ -347,6 +358,10 @@ void RasterizerMarkRegionCached(PAddr start, u32 size, int count_delta) {
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if (res_count == 0) {
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PageType& page_type = current_page_table->attributes[vaddr >> PAGE_BITS];
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switch (page_type) {
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case PageType::Unmapped:
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// It is not necessary for a process to have this region mapped into its address
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// space, for example, a system module need not have a VRAM mapping.
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break;
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case PageType::RasterizerCachedMemory: {
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u8* pointer = GetPointerFromVMA(vaddr & ~PAGE_MASK);
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if (pointer == nullptr) {
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