diff options
| author | Chuanxiao Dong <chuanxiao.dong@intel.com> | 2017-02-14 10:15:54 +0100 |
|---|---|---|
| committer | Zhenyu Wang <zhenyuw@linux.intel.com> | 2017-02-14 10:35:39 +0100 |
| commit | 4a0b3444da3ce1090d0f894f4e343756a94ab8c3 (patch) | |
| tree | 7f8a303902da4c70155005da454dd7cb66629444 /drivers | |
| parent | drm/i915/gvt: optimize the inhibit context mmio load (diff) | |
| download | linux-4a0b3444da3ce1090d0f894f4e343756a94ab8c3.tar.xz linux-4a0b3444da3ce1090d0f894f4e343756a94ab8c3.zip | |
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: Chuanxiao Dong <chuanxiao.dong@intel.com>
Cc: xinda.zhao@intel.com
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/kvmgt.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/gvt/kvmgt.c b/drivers/gpu/drm/i915/gvt/kvmgt.c index c429ed033fc4..10c3a4b95a92 100644 --- a/drivers/gpu/drm/i915/gvt/kvmgt.c +++ b/drivers/gpu/drm/i915/gvt/kvmgt.c @@ -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; |