On 13/07/2026 13:58, Timur Kristóf wrote:
Enable IP block soft reset as a GPU recovery method for GFX7
graphics and compute rings.
This improves current user experience on all GFX7 chips:
* On Kaveri and Kabini there is currently no working
GPU recovery method so those chips currently require
the user to manually reset the computer when there
was a hang.
* On Hawaii and Bonaire, the current GPU recovery method
always clears the contents of VRAM, which means that
a buggy (hanging) app can crash the whole graphical
session, which is less than ideal.
Using GFX IP block soft reset means that we can now
have a working recovery on GFX7 APUs and we can also
move on from GFX hangs on dGPUs without crashing the
whole system.
Tested with the "hard_reset_cp_wait" test case from the
Hang Test Suite created by Natalie Vock and Konstantin Seurer.
This Vulkan testcase waits for an event that never occurs,
effectively a WAIT_REG_MEM packet that intentionally hangs.
IP block soft reset can resolve that hang and allow
the rest of the system to move on and keep functioning
without needing a full ASIC reset.
Tested on the following chips:
Bonaire (Radeon HD 7790)
Hawaii (Radeon R9 390X)
Kaveri (A10-7850K)
Signed-off-by: Timur Kristóf <[email protected]>
---
drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
index 825e3d7d5f0f..1a7a6962303e 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
@@ -4434,6 +4434,11 @@ static int gfx_v7_0_sw_init(struct amdgpu_ip_block
*ip_block)
adev->gfx.compute_supported_reset =
amdgpu_get_soft_full_reset_mask(&adev->gfx.compute_ring[0]);
+ if (!amdgpu_sriov_vf(adev) && !adev->debug_disable_ip_block_soft_reset) {
+ adev->gfx.compute_supported_reset |=
AMDGPU_RESET_TYPE_IP_BLOCK_SOFT_RESET;
+ adev->gfx.gfx_supported_reset |=
AMDGPU_RESET_TYPE_IP_BLOCK_SOFT_RESET;
+ }
+
return r;
}
Reviewed-by: Tvrtko Ursulin <[email protected]>
Regards,
Tvrtko
