This is a note to let you know that I've just added the patch titled
drm/i915/migrate: fix length calculation
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-i915-migrate-fix-length-calculation.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit c0bf242232f66d961668453c34c9312bd9be48cc
Author: Matthew Auld <matthew.auld@xxxxxxxxx>
Date: Mon Dec 6 11:25:38 2021 +0000
drm/i915/migrate: fix length calculation
[ Upstream commit 31d70749bfe110593fbe8bf45e7c7788c7d85035 ]
No need to insert PTEs for the PTE window itself, also foreach expects a
length not an end offset, which could be gigantic here with a second
engine.
Signed-off-by: Matthew Auld <matthew.auld@xxxxxxxxx>
Cc: Thomas Hellström <thomas.hellstrom@xxxxxxxxxxxxxxx>
Cc: Ramalingam C <ramalingam.c@xxxxxxxxx>
Reviewed-by: Ramalingam C <ramalingam.c@xxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20211206112539.3149779-3-matthew.auld@xxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/i915/gt/intel_migrate.c b/drivers/gpu/drm/i915/gt/intel_migrate.c
index fb7fe3a2b6c6..5b59a6effc20 100644
--- a/drivers/gpu/drm/i915/gt/intel_migrate.c
+++ b/drivers/gpu/drm/i915/gt/intel_migrate.c
@@ -133,7 +133,7 @@ static struct i915_address_space *migrate_vm(struct intel_gt *gt)
goto err_vm;
/* Now allow the GPU to rewrite the PTE via its own ppGTT */
- vm->vm.foreach(&vm->vm, base, base + sz, insert_pte, &d);
+ vm->vm.foreach(&vm->vm, base, d.offset - base, insert_pte, &d);
}
return &vm->vm;
