diff options
| author | Min He | 2016-12-21 07:54:48 +0100 |
|---|---|---|
| committer | Zhenyu Wang | 2016-12-26 02:45:29 +0100 |
| commit | 34700631bd465de3e555e5964f36a0919c466aa8 (patch) | |
| tree | 7e47c651cd483948b98da13755a6a2fb600892c4 /drivers/gpu/drm/i915/gvt | |
| parent | drm/i915/gvt/kvmgt: trival: code cleanup (diff) | |
| download | kernel-qcow2-linux-34700631bd465de3e555e5964f36a0919c466aa8.tar.gz kernel-qcow2-linux-34700631bd465de3e555e5964f36a0919c466aa8.tar.xz kernel-qcow2-linux-34700631bd465de3e555e5964f36a0919c466aa8.zip | |
drm/i915/gvt: fix an issue in emulating cfg space PCI_COMMAND
There's an issue in current cfg space emulation for PCI_COMMAND (offset
0x4): when guest changes some bits other than PCI_COMMAND_MEMORY, this
write operation will not be written to virutal cfg space successfully.
This patch is to fix the wrong behavior above.
Signed-off-by: Min He <min.he@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915/gvt')
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/cfg_space.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/gvt/cfg_space.c b/drivers/gpu/drm/i915/gvt/cfg_space.c index db516382a4d4..959c7f0144b4 100644 --- a/drivers/gpu/drm/i915/gvt/cfg_space.c +++ b/drivers/gpu/drm/i915/gvt/cfg_space.c @@ -123,6 +123,7 @@ static int emulate_pci_command_write(struct intel_vgpu *vgpu, u8 changed = old ^ new; int ret; + memcpy(vgpu_cfg_space(vgpu) + offset, p_data, bytes); if (!(changed & PCI_COMMAND_MEMORY)) return 0; @@ -142,7 +143,6 @@ static int emulate_pci_command_write(struct intel_vgpu *vgpu, return ret; } - memcpy(vgpu_cfg_space(vgpu) + offset, p_data, bytes); return 0; } |