diff options
| author | Arvind Yadav <arvind.yadav@intel.com> | 2026-03-26 18:38:38 +0530 |
|---|---|---|
| committer | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2026-03-30 08:51:42 -0400 |
| commit | 7b9a3a910e96f20b101b0df6b1f5c77b023a4097 (patch) | |
| tree | 3e635dfa25e1ae3820668d9a3f4be5d9aad819d1 /fs/devfs/git@git.tavy.me:linux.git | |
| parent | 6d192b4f2d644d15d9a9f1d33dab05af936f6540 (diff) | |
drm/xe/madvise: Accept canonical GPU addresses in xe_vm_madvise_ioctl
Userspace passes canonical (sign-extended) GPU addresses where bits 63:48
mirror bit 47. The internal GPUVM uses non-canonical form (upper bits
zeroed), so passing raw canonical addresses into GPUVM lookups causes
mismatches for addresses above 128TiB.
Strip the sign extension with xe_device_uncanonicalize_addr() at the
top of xe_vm_madvise_ioctl(). Non-canonical addresses are unaffected.
Fixes: ada7486c5668 ("drm/xe: Implement madvise ioctl for xe")
Suggested-by: Matthew Brost <matthew.brost@intel.com>
Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Signed-off-by: Arvind Yadav <arvind.yadav@intel.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patch.msgid.link/20260326130843.3545241-13-arvind.yadav@intel.com
(cherry picked from commit 05c8b1cdc54036465ea457a0501a8c2f9409fce7)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Diffstat (limited to 'fs/devfs/git@git.tavy.me:linux.git')
0 files changed, 0 insertions, 0 deletions