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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-07-26 11:16:46 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-07-26 11:16:46 +0200 |
| commit | d842bc6c0579ca7643eed029beabab3ac562a335 (patch) | |
| tree | 6e1f1521efe88b095b14a759ea15aa81e7b0e33f /drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | |
| parent | 8e6cb5d27e8246d9c986ec162d066a502d2b602b (diff) | |
| parent | ff1176468d368232b684f75e82563369208bc371 (diff) | |
| download | lwn-d842bc6c0579ca7643eed029beabab3ac562a335.tar.gz lwn-d842bc6c0579ca7643eed029beabab3ac562a335.zip | |
Merge v5.14-rc3 into usb-next
We need the fixes in here, and this resolves a merge issue with
drivers/usb/dwc3/gadget.c
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c index b3404c43a911..854fc497844b 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c @@ -255,6 +255,15 @@ static int amdgpu_gem_object_mmap(struct drm_gem_object *obj, struct vm_area_str if (bo->flags & AMDGPU_GEM_CREATE_NO_CPU_ACCESS) return -EPERM; + /* Workaround for Thunk bug creating PROT_NONE,MAP_PRIVATE mappings + * for debugger access to invisible VRAM. Should have used MAP_SHARED + * instead. Clearing VM_MAYWRITE prevents the mapping from ever + * becoming writable and makes is_cow_mapping(vm_flags) false. + */ + if (is_cow_mapping(vma->vm_flags) && + !(vma->vm_flags & (VM_READ | VM_WRITE | VM_EXEC))) + vma->vm_flags &= ~VM_MAYWRITE; + return drm_gem_ttm_mmap(obj, vma); } @@ -612,7 +621,7 @@ static void amdgpu_gem_va_update_vm(struct amdgpu_device *adev, if (operation == AMDGPU_VA_OP_MAP || operation == AMDGPU_VA_OP_REPLACE) { - r = amdgpu_vm_bo_update(adev, bo_va, false, NULL); + r = amdgpu_vm_bo_update(adev, bo_va, false); if (r) goto error; } |