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| author | Tina Zhang <tina.zhang@intel.com> | 2019-12-13 11:23:14 +0800 |
|---|---|---|
| committer | Zhenyu Wang <zhenyuw@linux.intel.com> | 2019-12-13 11:24:01 +0800 |
| commit | 9f674c811740b5db4b34668b72d47f6e7b879b0a (patch) | |
| tree | 8085b2e99b332ec85e527abfc436139d20dbdd53 /drivers/gpu/drm/i915/gvt/hypercall.h | |
| parent | 4fc0a3ca721da2bfbab0fdf248bd76d7e6bc232f (diff) | |
| download | lwn-9f674c811740b5db4b34668b72d47f6e7b879b0a.tar.gz lwn-9f674c811740b5db4b34668b72d47f6e7b879b0a.zip | |
drm/i915/gvt: Pin vgpu dma address before using
Dma-buf display uses the vgpu dma address saved in the guest part GGTT
table which is updated by vCPU thread. In host side, when the dma
address is used by qemu ui thread, gvt-g must make sure the dma address
is validated before letting it go to the HW. Invalid guest dma address
will easily cause DMA fault and make GPU hang.
v2: Rebase
Fixes: e546e281d33d ("drm/i915/gvt: Dmabuf support for GVT-g")
Acked-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Tina Zhang <tina.zhang@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20191212141342.3417-1-tina.zhang@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/gvt/hypercall.h')
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/hypercall.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gvt/hypercall.h b/drivers/gpu/drm/i915/gvt/hypercall.h index 4862fb12778e..b19a3b1ea4c1 100644 --- a/drivers/gpu/drm/i915/gvt/hypercall.h +++ b/drivers/gpu/drm/i915/gvt/hypercall.h @@ -62,6 +62,8 @@ struct intel_gvt_mpt { unsigned long size, dma_addr_t *dma_addr); void (*dma_unmap_guest_page)(unsigned long handle, dma_addr_t dma_addr); + int (*dma_pin_guest_page)(unsigned long handle, dma_addr_t dma_addr); + int (*map_gfn_to_mfn)(unsigned long handle, unsigned long gfn, unsigned long mfn, unsigned int nr, bool map); int (*set_trap_area)(unsigned long handle, u64 start, u64 end, |