diff options
| author | Xiong Zhang <xiong.y.zhang@intel.com> | 2017-08-02 10:31:01 +0800 |
|---|---|---|
| committer | Zhenyu Wang <zhenyuw@linux.intel.com> | 2017-08-07 15:50:39 +0800 |
| commit | d6086598d34e1cf9091c7be201f5b2041dc6203e (patch) | |
| tree | d94ca8c5b35d146a45770d8f0b1a785ed30f6d4c | |
| parent | 02b6ed44304e458d68e454493ab272f4e3c3c53a (diff) | |
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: 65f9f6febf12 ("drm/i915/gvt: Optimize MMIO register handling for some large MMIO blocks")
Signed-off-by: Xiong Zhang <xiong.y.zhang@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/handlers.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/gvt/handlers.c b/drivers/gpu/drm/i915/gvt/handlers.c index 323664a238f5..feed9921b3b3 100644 --- a/drivers/gpu/drm/i915/gvt/handlers.c +++ b/drivers/gpu/drm/i915/gvt/handlers.c @@ -3028,7 +3028,7 @@ int intel_vgpu_mmio_reg_rw(struct intel_vgpu *vgpu, unsigned int offset, gvt_mmio_func func; int ret; - if (WARN_ON(bytes > 4)) + if (WARN_ON(bytes > 8)) return -EINVAL; /* |