This is a note to let you know that I've just added the patch titled
drm/amdkfd: Get prange->offset after svm_range_vram_node_new
to the 6.2-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-amdkfd-get-prange-offset-after-svm_range_vram_node_new.patch
and it can be found in the queue-6.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 8eeddc0d4200762063e1c66b9cc63afa7b24ebf0 Mon Sep 17 00:00:00 2001
From: Xiaogang Chen <xiaogang.chen@xxxxxxx>
Date: Thu, 9 Mar 2023 17:44:55 -0600
Subject: drm/amdkfd: Get prange->offset after svm_range_vram_node_new
From: Xiaogang Chen <xiaogang.chen@xxxxxxx>
commit 8eeddc0d4200762063e1c66b9cc63afa7b24ebf0 upstream.
During miration to vram prange->offset is valid after vram buffer is located,
either use old one or allocate a new one. Move svm_range_vram_node_new before
migrate for each vma to get valid prange->offset.
v2: squash in warning fix
Fixes: b4ee9606378b ("drm/amdkfd: Fix BO offset for multi-VMA page migration")
Signed-off-by: Xiaogang Chen <Xiaogang.Chen@xxxxxxx>
Reviewed-by: Felix Kuehling <Felix.Kuehling@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/amd/amdkfd/kfd_migrate.c | 16 +++++++++-------
1 file changed, 9 insertions(+), 7 deletions(-)
--- a/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_migrate.c
@@ -305,12 +305,6 @@ svm_migrate_copy_to_vram(struct amdgpu_d
src = scratch;
dst = (uint64_t *)(scratch + npages);
- r = svm_range_vram_node_new(adev, prange, true);
- if (r) {
- dev_dbg(adev->dev, "fail %d to alloc vram\n", r);
- goto out;
- }
-
amdgpu_res_first(prange->ttm_res, ttm_res_offset,
npages << PAGE_SHIFT, &cursor);
for (i = j = 0; i < npages; i++) {
@@ -391,7 +385,7 @@ out_free_vram_pages:
migrate->dst[i + 3] = 0;
}
#endif
-out:
+
return r;
}
@@ -520,6 +514,12 @@ svm_migrate_ram_to_vram(struct svm_range
start = prange->start << PAGE_SHIFT;
end = (prange->last + 1) << PAGE_SHIFT;
+
+ r = svm_range_vram_node_new(adev, prange, true);
+ if (r) {
+ dev_dbg(adev->dev, "fail %ld to alloc vram\n", r);
+ return r;
+ }
ttm_res_offset = prange->offset << PAGE_SHIFT;
for (addr = start; addr < end;) {
@@ -543,6 +543,8 @@ svm_migrate_ram_to_vram(struct svm_range
if (cpages)
prange->actual_loc = best_loc;
+ else
+ svm_range_vram_node_free(prange);
return r < 0 ? r : 0;
}
Patches currently in stable-queue which might be from xiaogang.chen@xxxxxxx are
queue-6.2/drm-amdkfd-get-prange-offset-after-svm_range_vram_node_new.patch
