Commit 06ea4c34 authored Jan 14, 2019 by wentalou Committed by Alex Deucher Jan 29, 2019

drm/amdgpu: csa_vaddr should not larger than AMDGPU_GMC_HOLE_START



After removing unnecessary VM size calculations,
vm_manager.max_pfn would reach 0x10,0000,0000
max_pfn << AMDGPU_GPU_PAGE_SHIFT exceeding AMDGPU_GMC_HOLE_START
would cause GPU reset.

Signed-off-by: wentalou <Wentao.Lou@amd.com>
Reviewed-by: Monk Liu <monk.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

parent a97c084a

drivers/gpu/drm/amd/amdgpu/amdgpu_csa.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -26,7 +26,8 @@

		uint64_t amdgpu_csa_vaddr(struct amdgpu_device *adev)
		{
		uint64_t addr = adev->vm_manager.max_pfn << AMDGPU_GPU_PAGE_SHIFT;
		uint64_t addr = min(adev->vm_manager.max_pfn << AMDGPU_GPU_PAGE_SHIFT,
		AMDGPU_GMC_HOLE_START);

		addr -= AMDGPU_VA_RESERVED_SIZE;
		addr = amdgpu_gmc_sign_extend(addr);

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