From: Victor Skvortsov <victor.skvortsov@amd.com>
Date: Thu, 14 Mar 2024 21:27:46 +0000 (-0400)
Subject: drm/amdgpu: Skip virt_exchange_init on SDMA poison consumption
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=6bb89d1340425ff030b7bdb0eec53ca6d12d1313;p=linux.git

drm/amdgpu: Skip virt_exchange_init on SDMA poison consumption

Host will initiate an FLR in SDMA poison consumption scenario.
Guest should wait for FLR message to re-init data exchange.

Signed-off-by: Victor Skvortsov <victor.skvortsov@amd.com>
Reviewed-by: Zhigang Luo <zhigang.luo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c b/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c
index 77f5b55decf96..a1bad772d932e 100644
--- a/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c
+++ b/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c
@@ -444,7 +444,8 @@ static void xgpu_nv_ras_poison_handler(struct amdgpu_device *adev,
 		amdgpu_virt_fini_data_exchange(adev);
 		xgpu_nv_send_access_requests_with_param(adev,
 					IDH_RAS_POISON,	block, 0, 0);
-		amdgpu_virt_init_data_exchange(adev);
+		if (block != AMDGPU_RAS_BLOCK__SDMA)
+			amdgpu_virt_init_data_exchange(adev);
 	}
 }