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Move FlatAllocator allocation error handling to the caller

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This is a prerequisite for nvmap SMMU memory management, which only frees the memory handles refer to if an allocation fails.
This commit is contained in:
Billy Laws 2021-10-25 22:51:49 +01:00 committed by PixelyIon
parent 04e5237ec1
commit 97dc053ffd
3 changed files with 11 additions and 3 deletions
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2
app/src/main/cpp/skyline/common/address_space.inc
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@ -406,7 +406,7 @@ namespace skyline {
if (searchSuccessor != this->blocks.end())
allocStart = searchPredecessor->virt;
else
throw exception("Unexpected allocator state!");
return {}; // AS is full
}

10
app/src/main/cpp/skyline/services/nvdrv/devices/nvhost/as_gpu.cpp
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@ -65,10 +65,13 @@ namespace skyline::service::nvdrv::device::nvhost {
auto &allocator{pageSize == VM::PageSize ? *vm.smallPageAllocator : *vm.bigPageAllocator};
if (flags.fixed)
if (flags.fixed) {
allocator.AllocateFixed(static_cast<u32>(offset >> pageSizeBits), pages);
else
} else {
offset = static_cast<u64>(allocator.Allocate(pages)) << pageSizeBits;
if (!offset)
throw exception("Failed to allocate free space in the GPU AS!");
}
u64 size{static_cast<u64>(pages) * pageSize};
@ -236,6 +239,9 @@ namespace skyline::service::nvdrv::device::nvhost {
u32 pageSizeBits{bigPage ? vm.bigPageSizeBits : VM::PageSizeBits};
offset = static_cast<u64>(allocator.Allocate(static_cast<u32>(util::AlignUp(size, pageSize) >> pageSizeBits))) << pageSizeBits;
if (!offset)
throw exception("Failed to allocate free space in the GPU AS!");
asCtx->gmmu.Map(offset, cpuPtr, size);
auto mapping{std::make_shared<Mapping>(cpuPtr, offset, size, false, bigPage, false)};

2
app/src/main/cpp/skyline/services/nvdrv/devices/nvhost/gpu_channel.cpp
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@ -182,6 +182,8 @@ namespace skyline::service::nvdrv::device::nvhost {
// Allocate pages in the GPU AS
pushBufferAddr = static_cast<u64>(asAllocator->Allocate((static_cast<u32>(pushBufferWords) >> AsGpu::VM::PageSizeBits) + 1)) << AsGpu::VM::PageSizeBits;
if (!pushBufferAddr)
throw exception("Failed to allocate channel pushbuffer!");
// Map onto the GPU
asCtx->gmmu.Map(pushBufferAddr, reinterpret_cast<u8 *>(pushBufferMemory.data()), pushBufferSize);