Am 30.07.20 um 13:40 schrieb Daniel Vetter:
On Wed, Jul 29, 2020 at 5:34 PM Koenig, Christian
<[email protected]> wrote:
Sure.
Note that drm-misc-next isn't the right branch for cc: stable stuff, see
https://drm.pages.freedesktop.org/maintainer-tools/committer-drm-misc.html#where-do-i-apply-my-patch
So this should go into drm-misc-fixes? The bug is there for quite a while.
Christian.
Just to avoid confusion and needless cherrypicking across branches.
-Daniel
Christian.
Am 29.07.2020 17:30 schrieb "Deucher, Alexander" <[email protected]>:
[AMD Public Use]
Christian, Can you cc stable when you apply it to drm-misc?
Alex
________________________________
From: Kuehling, Felix <[email protected]>
Sent: Wednesday, July 29, 2020 10:15 AM
To: Koenig, Christian <[email protected]>; [email protected]
<[email protected]>; [email protected]
<[email protected]>; Deucher, Alexander <[email protected]>
Cc: Morichetti, Laurent <[email protected]>
Subject: Re: [PATCH 1/1] drm/ttm: fix offset in VMAs with a pg_offs in
ttm_bo_vm_access
Am 2020-07-29 um 4:08 a.m. schrieb Christian König:
Am 28.07.20 um 20:27 schrieb Felix Kuehling:
VMAs with a pg_offs that's offset from the start of the vma_node need
to adjust the offset within the BO accordingly. This matches the
offset calculation in ttm_bo_vm_fault_reserved.
Signed-off-by: Felix Kuehling <[email protected]>
Tested-by: Laurent Morichetti <[email protected]>
Reviewed-by: Christian König <[email protected]>
Going to pick that up for inclusion in drm-misc-next.
Thanks. I'll submit it to amd-staging-drm-next so it makes its way into
our DKMS branch quickly.
Alex, would you push this to drm-fixes?
Regards,
Felix
---
drivers/gpu/drm/ttm/ttm_bo_vm.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/ttm/ttm_bo_vm.c
b/drivers/gpu/drm/ttm/ttm_bo_vm.c
index 389128b8c4dd..60b41447bec8 100644
--- a/drivers/gpu/drm/ttm/ttm_bo_vm.c
+++ b/drivers/gpu/drm/ttm/ttm_bo_vm.c
@@ -405,8 +405,10 @@ static int ttm_bo_vm_access_kmap(struct
ttm_buffer_object *bo,
int ttm_bo_vm_access(struct vm_area_struct *vma, unsigned long addr,
void *buf, int len, int write)
{
- unsigned long offset = (addr) - vma->vm_start;
struct ttm_buffer_object *bo = vma->vm_private_data;
+ unsigned long offset = (addr) - vma->vm_start +
+ ((vma->vm_pgoff - drm_vma_node_start(&bo->base.vma_node))
+ << PAGE_SHIFT);
int ret;
if (len < 1 || (offset + len) >> PAGE_SHIFT > bo->num_pages)
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