This is a note to let you know that I've just added the patch titled
drm/amdgpu: apply gfx_v8 fixes to gfx_v7 as well
to the 4.4-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-amdgpu-apply-gfx_v8-fixes-to-gfx_v7-as-well.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From feebe91aa9a9d99d9ec157612a614fadb79beb99 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@xxxxxxx>
Date: Fri, 26 Feb 2016 16:18:15 +0100
Subject: drm/amdgpu: apply gfx_v8 fixes to gfx_v7 as well
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From: Christian König <christian.koenig@xxxxxxx>
commit feebe91aa9a9d99d9ec157612a614fadb79beb99 upstream.
We never ported that back to CIK, so we could run into VM faults here.
Signed-off-by: Christian König <christian.koenig@xxxxxxx>
Reviewed-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
@@ -3628,6 +3628,19 @@ static void gfx_v7_0_ring_emit_vm_flush(
unsigned vm_id, uint64_t pd_addr)
{
int usepfp = (ring->type == AMDGPU_RING_TYPE_GFX);
+ uint32_t seq = ring->fence_drv.sync_seq;
+ uint64_t addr = ring->fence_drv.gpu_addr;
+
+ amdgpu_ring_write(ring, PACKET3(PACKET3_WAIT_REG_MEM, 5));
+ amdgpu_ring_write(ring, (WAIT_REG_MEM_MEM_SPACE(1) | /* memory */
+ WAIT_REG_MEM_FUNCTION(3) | /* equal */
+ WAIT_REG_MEM_ENGINE(usepfp))); /* pfp or me */
+ amdgpu_ring_write(ring, addr & 0xfffffffc);
+ amdgpu_ring_write(ring, upper_32_bits(addr) & 0xffffffff);
+ amdgpu_ring_write(ring, seq);
+ amdgpu_ring_write(ring, 0xffffffff);
+ amdgpu_ring_write(ring, 4); /* poll interval */
+
if (usepfp) {
/* synce CE with ME to prevent CE fetch CEIB before context switch done */
amdgpu_ring_write(ring, PACKET3(PACKET3_SWITCH_BUFFER, 0));
Patches currently in stable-queue which might be from christian.koenig@xxxxxxx are
queue-4.4/drm-amdgpu-mask-out-wc-from-bo-on-unsupported-arches.patch
queue-4.4/drm-amdgpu-pm-update-current-crtc-info-after-setting-the-powerstate.patch
queue-4.4/drm-radeon-pm-update-current-crtc-info-after-setting-the-powerstate.patch
queue-4.4/drm-amdgpu-apply-gfx_v8-fixes-to-gfx_v7-as-well.patch
queue-4.4/drm-amdgpu-gfx8-specify-which-engine-to-wait-before-vm-flush.patch
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