Commit d6086598 authored by Xiong Zhang's avatar Xiong Zhang Committed by Zhenyu Wang

drm/i915/gvt: Change the max length of mmio_reg_rw from 4 to 8

When linux guest access mmio with __raw_i915_read64 or __raw_i915_write64,
its length is 8 bytes.

This fix the linux guest in xengt couldn't boot up as it fail in
reading pv_info->magic.

Fixes: 65f9f6fe ("drm/i915/gvt: Optimize MMIO register handling for some large MMIO blocks")
Signed-off-by: default avatarXiong Zhang <xiong.y.zhang@intel.com>
Signed-off-by: default avatarZhenyu Wang <zhenyuw@linux.intel.com>
parent 02b6ed44
...@@ -3028,7 +3028,7 @@ int intel_vgpu_mmio_reg_rw(struct intel_vgpu *vgpu, unsigned int offset, ...@@ -3028,7 +3028,7 @@ int intel_vgpu_mmio_reg_rw(struct intel_vgpu *vgpu, unsigned int offset,
gvt_mmio_func func; gvt_mmio_func func;
int ret; int ret;
if (WARN_ON(bytes > 4)) if (WARN_ON(bytes > 8))
return -EINVAL; return -EINVAL;
/* /*
......
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