In XenGT, the fence registers are partitioned by multiple vgpu instances in different VMs. Routine i915_gem_load() is modified to reset the num_fence_regs, when the driver detects it's runing in a VM. And the allocated fence numbers is provided in PV INFO page structure. Signed-off-by: Yu Zhang <yu.c.zhang@xxxxxxxxxxxxxxx> Signed-off-by: Jike Song <jike.song@xxxxxxxxx> Signed-off-by: Eddie Dong <eddie.dong@xxxxxxxxx> --- drivers/gpu/drm/i915/i915_gem.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index e9c783d..a0eec59 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -28,6 +28,7 @@ #include <drm/drmP.h> #include <drm/drm_vma_manager.h> #include <drm/i915_drm.h> +#include "i915_vgt_if.h" #include "i915_drv.h" #include "i915_trace.h" #include "intel_drv.h" @@ -4988,6 +4989,10 @@ i915_gem_load(struct drm_device *dev) else dev_priv->num_fence_regs = 8; + if (intel_vgpu_active(dev)) + dev_priv->num_fence_regs = + I915_READ(vgtif_reg(avail_rs.fence_num)); + /* Initialize fence registers to zero */ INIT_LIST_HEAD(&dev_priv->mm.fence_list); i915_gem_restore_fences(dev); -- 1.9.1 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
