Re: [PATCH 1/1] drm/ttm: Fix COW check

Am 10.07.21 um 02:28 schrieb Felix Kuehling: KFD Thunk maps invisible VRAM BOs with PROT_NONE, MAP_PRIVATE. is_cow_mapping returns true for these mappings. Add a check for vm_flags & VM_WRITE to avoid mmap failures on private read-only or PROT_NONE mappings. v2: protect against mprotect making a

[PATCH 1/1] drm/ttm: Fix COW check

KFD Thunk maps invisible VRAM BOs with PROT_NONE, MAP_PRIVATE. is_cow_mapping returns true for these mappings. Add a check for vm_flags & VM_WRITE to avoid mmap failures on private read-only or PROT_NONE mappings. v2: protect against mprotect making a mapping writable after the fact Fixes: f91142