• Zhenyu Wang's avatar
    drm/i915/gvt: Fix mmap range check · 51b00d85
    Zhenyu Wang authored
    This is to fix missed mmap range check on vGPU bar2 region
    and only allow to map vGPU allocated GMADDR range, which means
    user space should support sparse mmap to get proper offset for
    mmap vGPU aperture. And this takes care of actual pgoff in mmap
    request as original code always does from beginning of vGPU
    aperture.
    
    Fixes: 659643f7 ("drm/i915/gvt/kvmgt: add vfio/mdev support to KVMGT")
    Cc: "Monroy, Rodrigo Axel" <rodrigo.axel.monroy@intel.com>
    Cc: "Orrala Contreras, Alfredo" <alfredo.orrala.contreras@intel.com>
    Cc: stable@vger.kernel.org # v4.10+
    Reviewed-by: default avatarHang Yuan <hang.yuan@intel.com>
    Signed-off-by: default avatarZhenyu Wang <zhenyuw@linux.intel.com>
    51b00d85
kvmgt.c 45.3 KB