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Commit 4a0b3444 authored by Chuanxiao Dong's avatar Chuanxiao Dong Committed by Zhenyu Wang
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drm/i915/gvt: return error code if dma map iova failed 



When doing dma map failed for a pfn, kvmgt should unpin the
pfn and return error code to device module driver

Signed-off-by: default avatarChuanxiao Dong <chuanxiao.dong@intel.com>
Cc: xinda.zhao@intel.com
Signed-off-by: default avatarZhenyu Wang <zhenyuw@linux.intel.com>
parent bc6a1c85

drivers/gpu/drm/i915/gvt/kvmgt.c

+4 −1
Original line number Diff line number Diff line
@@ -1402,8 +1402,11 @@ static unsigned long kvmgt_gfn_to_pfn(unsigned long handle, unsigned long gfn) 
	}

	/* transfer to host iova for GFX to use DMA */

	rc = gvt_dma_map_iova(info->vgpu, pfn, &iova);

	if (rc)

	if (rc) {

		gvt_err("gvt_dma_map_iova failed for gfn: 0x%lx\n", gfn);

		vfio_unpin_pages(dev, &gfn, 1);

		return INTEL_GVT_INVALID_ADDR;

	}



	gvt_cache_add(info->vgpu, gfn, iova);

	return iova;