• Min He's avatar
    drm/i915/gvt: introduced failsafe mode into vgpu · fd64be63
    Min He authored
    New failsafe mode is introduced, when we detect guest not supporting
    GVT-g.
    In failsafe mode, we will ignore all the MMIO and cfg space read/write
    from guest.
    
    This patch can fix the issue that when guest kernel or graphics driver
    version is too low, there will be a lot of kernel traces in host.
    
    V5: rebased onto latest gvt-staging
    V4: changed coding style by Zhenyu and Ping's advice
    V3: modified coding style and error messages according to Zhenyu's comment
    V2: 1) implemented MMIO/GTT/WP pages read/write logic; 2) used a unified
    function to enter failsafe mode
    Signed-off-by: default avatarMin He <min.he@intel.com>
    Signed-off-by: default avatarPei Zhang <pei.zhang@intel.com>
    Signed-off-by: default avatarZhenyu Wang <zhenyuw@linux.intel.com>
    fd64be63
gvt.h 13.1 KB