AMD General This series Reviewed-by: Harish Kasiviswanathan <[email protected]>
________________________________ From: Joshi, Mukul <[email protected]> Sent: Thursday, September 3, 2026 4:48 PM To: [email protected] <[email protected]> Cc: Kasiviswanathan, Harish <[email protected]>; Kuehling, Felix <[email protected]>; Joshi, Mukul <[email protected]> Subject: [PATCH 2/2] drm/amdgpu: Reset UALink connection on failed TLB-shootdown send If sending TLB shootdown to a remote GPU fails, reset the connection and mark the connection as NOT_READY. Signed-off-by: Mukul Joshi <[email protected]> --- drivers/gpu/drm/amd/amdgpu/amdgpu_ualink.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ualink.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ualink.c index f5865c5fe93e..5b3c7f62c34d 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ualink.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ualink.c @@ -2681,10 +2681,19 @@ static void amdgpu_ualink_send_tlb_shootdown(struct amdgpu_device *adev, r = amdgpu_ualink_remote_shootdown(adev, remote_acc_id, npa_addr, size, AMDGPU_UALINK_HEAVYWEIGHT_TLB_SHOOTDOWN); - if (r) + if (r) { dev_err(adev->dev, "EXP-CLEANUP: TLB shootdown send failed to remote:%u\n", remote_acc_id); + + /* Send failed: mark the connection NOT_READY so the + * rest of this cleanup (and other cleanups) skip the + * unreachable peer via amdgpu_ualink_check_conn_ready(). + */ + amdgpu_ualink_handle_connection_reset(adev, remote_acc_id, + AMDGPU_UALINK_CONN_NOT_READY, + imp_entry->generation_count); + } } } -- 2.54.0
