[PATCH 5.10 346/406] drm/i915/gvt: Drop unused helper intel_vgpu_reset_gtt()

Greg Kroah-Hartman
2023-09-17T19:40:11Z

From: Sean Christopherson <seanjc@google.com>

[ Upstream commit a90c367e5af63880008e21dd199dac839e0e9e0f ]

Drop intel_vgpu_reset_gtt() as it no longer has any callers. In addition
to eliminating dead code, this eliminates the last possible scenario where
__kvmgt_protect_table_find() can be reached without holding vgpu_lock.
Requiring vgpu_lock to be held when calling __kvmgt_protect_table_find()
will allow a protecting the gfn hash with vgpu_lock without too much fuss.

No functional change intended.

Fixes: ba25d977571e ("drm/i915/gvt: Do not destroy ppgtt_mm during vGPU D3->D0.")
Reviewed-by: Yan Zhao <yan.y.zhao@intel.com>
Tested-by: Yongwei Ma <yongwei.ma@intel.com>
Reviewed-by: Zhi Wang <zhi.a.wang@intel.com>
Link: https://lore.kernel.org/r/20230729013535.1070024-11-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/i915/gvt/gtt.c | 18 ------------------
drivers/gpu/drm/i915/gvt/gtt.h | 1 -
2 files changed, 19 deletions(-)

diff --git a/drivers/gpu/drm/i915/gvt/gtt.c b/drivers/gpu/drm/i915/gvt/gtt.c
index 2029f8521a5dc..0d31a0db305d5 100644
--- a/drivers/gpu/drm/i915/gvt/gtt.c
+++ b/drivers/gpu/drm/i915/gvt/gtt.c
@@ -2870,24 +2870,6 @@ void intel_vgpu_reset_ggtt(struct intel_vgpu *vgpu, bool invalidate_old)
ggtt_invalidate(gvt->gt);
}

-/**
- * intel_vgpu_reset_gtt - reset the all GTT related status
- * @vgpu: a vGPU
- *
- * This function is called from vfio core to reset reset all
- * GTT related status, including GGTT, PPGTT, scratch page.
- *
- */
-void intel_vgpu_reset_gtt(struct intel_vgpu *vgpu)
-{
- /* Shadow pages are only created when there is no page
- * table tracking data, so remove page tracking data after
- * removing the shadow pages.
- */
- intel_vgpu_destroy_all_ppgtt_mm(vgpu);
- intel_vgpu_reset_ggtt(vgpu, true);
-}
-
/**
* intel_gvt_restore_ggtt - restore all vGPU's ggtt entries
* @gvt: intel gvt device
diff --git a/drivers/gpu/drm/i915/gvt/gtt.h b/drivers/gpu/drm/i915/gvt/gtt.h
index b0e173f2d9904..89ffb52cafa04 100644
--- a/drivers/gpu/drm/i915/gvt/gtt.h
+++ b/drivers/gpu/drm/i915/gvt/gtt.h
@@ -215,7 +215,6 @@ void intel_vgpu_reset_ggtt(struct intel_vgpu *vgpu, bool invalidate_old);
void intel_vgpu_invalidate_ppgtt(struct intel_vgpu *vgpu);

int intel_gvt_init_gtt(struct intel_gvt *gvt);
-void intel_vgpu_reset_gtt(struct intel_vgpu *vgpu);
void intel_gvt_clean_gtt(struct intel_gvt *gvt);

struct intel_vgpu_mm *intel_gvt_find_ppgtt_mm(struct intel_vgpu *vgpu,
--
2.40.1