drm/i915/gvt: devirtualize ->gfn_to_mfn

Just open code it in the only caller.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Zhi Wang <zhi.a.wang@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20220411141403.86980-20-hch@lst.de
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Zhi Wang <zhi.a.wang@intel.com>

diff --git a/drivers/gpu/drm/i915/gvt/gtt.c b/drivers/gpu/drm/i915/gvt/gtt.c
index 1360412..f6f3b22 100644 (file)
--- a/drivers/gpu/drm/i915/gvt/gtt.c
+++ b/drivers/gpu/drm/i915/gvt/gtt.c
@@ -1178,15 +1178,16 @@ static int is_2MB_gtt_possible(struct intel_vgpu *vgpu,
        struct intel_gvt_gtt_entry *entry)
 {
        const struct intel_gvt_gtt_pte_ops *ops = vgpu->gvt->gtt.pte_ops;
-       unsigned long pfn;
+       kvm_pfn_t pfn;
 
        if (!HAS_PAGE_SIZES(vgpu->gvt->gt->i915, I915_GTT_PAGE_SIZE_2M))
                return 0;
 
-       pfn = intel_gvt_hypervisor_gfn_to_mfn(vgpu, ops->get_pfn(entry));
-       if (pfn == INTEL_GVT_INVALID_ADDR)
+       if (!vgpu->attached)
+               return -EINVAL;
+       pfn = gfn_to_pfn(vgpu->kvm, ops->get_pfn(entry));
+       if (is_error_noslot_pfn(pfn))
                return -EINVAL;
-
        return PageTransHuge(pfn_to_page(pfn));
 }
 

diff --git a/drivers/gpu/drm/i915/gvt/hypercall.h b/drivers/gpu/drm/i915/gvt/hypercall.h
index c1a9eee..dbde492 100644 (file)
--- a/drivers/gpu/drm/i915/gvt/hypercall.h
+++ b/drivers/gpu/drm/i915/gvt/hypercall.h
@@ -47,7 +47,6 @@ struct intel_gvt_mpt {
        void (*host_exit)(struct device *dev, void *gvt);
        int (*enable_page_track)(struct intel_vgpu *vgpu, u64 gfn);
        int (*disable_page_track)(struct intel_vgpu *vgpu, u64 gfn);
-       unsigned long (*gfn_to_mfn)(struct intel_vgpu *vgpu, unsigned long gfn);
 
        int (*dma_map_guest_page)(struct intel_vgpu *vgpu, unsigned long gfn,
                                  unsigned long size, dma_addr_t *dma_addr);

diff --git a/drivers/gpu/drm/i915/gvt/kvmgt.c b/drivers/gpu/drm/i915/gvt/kvmgt.c
index 93fd7f9..6d4c672 100644 (file)
--- a/drivers/gpu/drm/i915/gvt/kvmgt.c
+++ b/drivers/gpu/drm/i915/gvt/kvmgt.c
@@ -1874,21 +1874,6 @@ void intel_vgpu_detach_regions(struct intel_vgpu *vgpu)
        vgpu->region = NULL;
 }
 
-static unsigned long kvmgt_gfn_to_pfn(struct intel_vgpu *vgpu,
-               unsigned long gfn)
-{
-       kvm_pfn_t pfn;
-
-       if (!vgpu->attached)
-               return INTEL_GVT_INVALID_ADDR;
-
-       pfn = gfn_to_pfn(vgpu->kvm, gfn);
-       if (is_error_noslot_pfn(pfn))
-               return INTEL_GVT_INVALID_ADDR;
-
-       return pfn;
-}
-
 static int kvmgt_dma_map_guest_page(struct intel_vgpu *vgpu, unsigned long gfn,
                unsigned long size, dma_addr_t *dma_addr)
 {
@@ -1985,7 +1970,6 @@ static const struct intel_gvt_mpt kvmgt_mpt = {
        .host_exit = kvmgt_host_exit,
        .enable_page_track = kvmgt_page_track_add,
        .disable_page_track = kvmgt_page_track_remove,
-       .gfn_to_mfn = kvmgt_gfn_to_pfn,
        .dma_map_guest_page = kvmgt_dma_map_guest_page,
        .dma_unmap_guest_page = kvmgt_dma_unmap_guest_page,
        .dma_pin_guest_page = kvmgt_dma_pin_guest_page,

diff --git a/drivers/gpu/drm/i915/gvt/mpt.h b/drivers/gpu/drm/i915/gvt/mpt.h
index 1a796f2..2d4bb6e 100644 (file)
--- a/drivers/gpu/drm/i915/gvt/mpt.h
+++ b/drivers/gpu/drm/i915/gvt/mpt.h
@@ -99,20 +99,6 @@ static inline int intel_gvt_hypervisor_disable_page_track(
        return intel_gvt_host.mpt->disable_page_track(vgpu, gfn);
 }
 
-/**
- * intel_gvt_hypervisor_gfn_to_mfn - translate a GFN to MFN
- * @vgpu: a vGPU
- * @gpfn: guest pfn
- *
- * Returns:
- * MFN on success, INTEL_GVT_INVALID_ADDR if failed.
- */
-static inline unsigned long intel_gvt_hypervisor_gfn_to_mfn(
-               struct intel_vgpu *vgpu, unsigned long gfn)
-{
-       return intel_gvt_host.mpt->gfn_to_mfn(vgpu, gfn);
-}
-
 /**
  * intel_gvt_hypervisor_dma_map_guest_page - setup dma map for guest page
  * @vgpu: a vGPU