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Buffer Cache: Fixes to DMA Copy.
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@ -172,7 +172,7 @@ public:
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[[nodiscard]] bool IsRegionGpuModified(VAddr addr, size_t size);
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/// Return true when a region is registered on the cache
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[[nodiscard]] bool IsRegionRegistered(VAddr addr, size_t size);
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[[nodiscard]] bool IsRegionRegistered(VAddr addr, size_t size) const;
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/// Return true when a CPU region is modified from the CPU
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[[nodiscard]] bool IsRegionCpuModified(VAddr addr, size_t size);
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@ -503,6 +503,11 @@ bool BufferCache<P>::DMACopy(GPUVAddr src_address, GPUVAddr dest_address, u64 am
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auto& src_buffer = slot_buffers[buffer_a];
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auto& dest_buffer = slot_buffers[buffer_b];
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SynchronizeBuffer(src_buffer, *cpu_src_address, static_cast<u32>(amount));
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const VAddr aligned_dst = Common::AlignUp(*cpu_dest_address, 64);
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const u64 diff = aligned_dst - *cpu_dest_address;
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const u64 new_amount = diff > amount ? 0 : amount - diff;
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dest_buffer.UnmarkRegionAsCpuModified(aligned_dst, Common::AlignDown(new_amount, 64));
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SynchronizeBuffer(dest_buffer, *cpu_dest_address, static_cast<u32>(amount));
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std::array copies{BufferCopy{
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.src_offset = src_buffer.Offset(*cpu_src_address),
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.dst_offset = dest_buffer.Offset(*cpu_dest_address),
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@ -526,11 +531,7 @@ bool BufferCache<P>::DMACopy(GPUVAddr src_address, GPUVAddr dest_address, u64 am
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common_ranges.add(add_interval);
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}
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if (dest_buffer.HasCachedWrites()) {
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dest_buffer.FlushCachedWrites();
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}
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runtime.CopyBuffer(dest_buffer, src_buffer, copies);
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dest_buffer.UnmarkRegionAsCpuModified(*cpu_dest_address, amount);
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if (atleast_1_download) {
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dest_buffer.MarkRegionAsGpuModified(*cpu_dest_address, amount);
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}
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@ -827,7 +828,7 @@ bool BufferCache<P>::IsRegionGpuModified(VAddr addr, size_t size) {
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}
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template <class P>
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bool BufferCache<P>::IsRegionRegistered(VAddr addr, size_t size) {
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bool BufferCache<P>::IsRegionRegistered(VAddr addr, size_t size) const {
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const VAddr end_addr = addr + size;
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const u64 page_end = Common::DivCeil(end_addr, PAGE_SIZE);
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for (u64 page = addr >> PAGE_BITS; page < page_end;) {
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