diff options
| author | Zhi Wang <zhi.a.wang@intel.com> | 2022-11-10 12:20:34 +0000 |
|---|---|---|
| committer | Zhenyu Wang <zhenyuw@linux.intel.com> | 2023-01-04 23:21:19 +0800 |
| commit | a06d4b9e15c0ea4e05b200cfb1f1050e785a5e87 (patch) | |
| tree | 938ffdc3fd9d95d703933c3387c471005a43a3d1 /drivers/gpu/drm/i915/gvt/interrupt.c | |
| parent | 704f3384f322b40ba24d958473edfb1c9750c8fd (diff) | |
| download | linux-stable-a06d4b9e15c0ea4e05b200cfb1f1050e785a5e87.tar.gz linux-stable-a06d4b9e15c0ea4e05b200cfb1f1050e785a5e87.tar.bz2 linux-stable-a06d4b9e15c0ea4e05b200cfb1f1050e785a5e87.zip | |
drm/i915/gvt: use atomic operations to change the vGPU status
Several vGPU status are used to decide the availability of GVT-g core
logics when creating a vGPU. Use atomic operations on changing the vGPU
status to avoid the racing.
Cc: Zhenyu Wang <zhenyuw@linux.intel.com>
Cc: Kevin Tian <kevin.tian@intel.com>
Cc: Jason Gunthorpe <jgg@nvidia.com>
Cc: intel-gvt-dev@lists.freedesktop.org
Suggested-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Zhi Wang <zhi.a.wang@intel.com>
Reviewed-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20221110122034.3382-2-zhi.a.wang@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/gvt/interrupt.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/interrupt.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/gvt/interrupt.c b/drivers/gpu/drm/i915/gvt/interrupt.c index a6b2021b665f..68eca023bbc6 100644 --- a/drivers/gpu/drm/i915/gvt/interrupt.c +++ b/drivers/gpu/drm/i915/gvt/interrupt.c @@ -433,7 +433,7 @@ static int inject_virtual_interrupt(struct intel_vgpu *vgpu) * enabled by guest. so if msi_trigger is null, success is still * returned and don't inject interrupt into guest. */ - if (!vgpu->attached) + if (!test_bit(INTEL_VGPU_STATUS_ATTACHED, vgpu->status)) return -ESRCH; if (vgpu->msi_trigger && eventfd_signal(vgpu->msi_trigger, 1) != 1) return -EFAULT; |