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FAILED: patch "[PATCH] drm/amdgpu/psp: don't free PSP buffers on suspend" failed to apply to 6.0-stable tree

PATCH [email protected] 1 participant 1 message Jan 4, 2023

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Stable branch DRM drivers Radeon and amdgpu DRM drivers
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The patch below does not apply to the 6.0-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

Possible dependencies:

96e1a88fafe6 ("drm/amdgpu/psp: don't free PSP buffers on suspend")

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 96e1a88fafe6a9afd371fadc0c7de41b883aaec9 Mon Sep 17 00:00:00 2001
From: Alex Deucher <[email protected]>
Date: Wed, 16 Nov 2022 11:26:53 -0500
Subject: [PATCH] drm/amdgpu/psp: don't free PSP buffers on suspend
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We can reuse the same buffers on resume.

v2: squash in S4 fix from Shikai

Bug https://gitlab.freedesktop.org/drm/amd/-/issues/2213
Reviewed-by Christian König <[email protected]>
Tested-by Guilherme G. Piccoli <[email protected]>
Signed-off-by Alex Deucher <[email protected]>
Cc [email protected]
drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c +9 -7
index 98dbf4e5aae9..1a3aa0eae591 100644
@@ -198,6 +198,7 @@ void psp_ta_free_shared_buf(struct ta_mem_context *mem_ctx)
 {
 	amdgpu_bo_free_kernel(&mem_ctx->shared_bo, &mem_ctx->shared_mc_addr,
 			      &mem_ctx->shared_buf);
+	mem_ctx->shared_bo = NULL;
 }
 
 static void psp_free_shared_bufs(struct psp_context *psp)

@@ -208,6 +209,7 @@ static void psp_free_shared_bufs(struct psp_context *psp)
 	/* free TMR memory buffer */
 	pptr = amdgpu_sriov_vf(psp->adev) ? &tmr_buf : NULL;
 	amdgpu_bo_free_kernel(&psp->tmr_bo, &psp->tmr_mc_addr, pptr);
+	psp->tmr_bo = NULL;
 
 	/* free xgmi shared memory */
 	psp_ta_free_shared_buf(&psp->xgmi_context.context.mem_context);

@@ -769,7 +771,7 @@ static int psp_load_toc(struct psp_context *psp,
 /* Set up Trusted Memory Region */
 static int psp_tmr_init(struct psp_context *psp)
 {
-	int ret;
+	int ret = 0;
 	int tmr_size;
 	void *tmr_buf;
 	void **pptr;

@@ -796,10 +798,12 @@ static int psp_tmr_init(struct psp_context *psp)
 		}
 	}
 
-	pptr = amdgpu_sriov_vf(psp->adev) ? &tmr_buf : NULL;
-	ret = amdgpu_bo_create_kernel(psp->adev, tmr_size, PSP_TMR_ALIGNMENT,
-				      AMDGPU_GEM_DOMAIN_VRAM,
-				      &psp->tmr_bo, &psp->tmr_mc_addr, pptr);
+	if (!psp->tmr_bo) {
+		pptr = amdgpu_sriov_vf(psp->adev) ? &tmr_buf : NULL;
+		ret = amdgpu_bo_create_kernel(psp->adev, tmr_size, PSP_TMR_ALIGNMENT,
+					      AMDGPU_GEM_DOMAIN_VRAM,
+					      &psp->tmr_bo, &psp->tmr_mc_addr, pptr);
+	}
 
 	return ret;
 }

@@ -2727,8 +2731,6 @@ static int psp_suspend(void *handle)
 	}
 
 out:
-	psp_free_shared_bufs(psp);
-
 	return ret;
 }