drm/i915/gvt: devirtualize dma_pin_guest_page

Just call the function directly and remove a pointless wrapper.

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/20220411141403.86980-23-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/dmabuf.c b/drivers/gpu/drm/i915/gvt/dmabuf.c
index db93b63..9044330 100644 (file)
--- a/drivers/gpu/drm/i915/gvt/dmabuf.c
+++ b/drivers/gpu/drm/i915/gvt/dmabuf.c
@@ -42,18 +42,6 @@
 
 #define GEN8_DECODE_PTE(pte) (pte & GENMASK_ULL(63, 12))
 
-static int vgpu_pin_dma_address(struct intel_vgpu *vgpu,
-                               unsigned long size,
-                               dma_addr_t dma_addr)
-{
-       int ret = 0;
-
-       if (intel_gvt_hypervisor_dma_pin_guest_page(vgpu, dma_addr))
-               ret = -EINVAL;
-
-       return ret;
-}
-
 static int vgpu_gem_get_pages(
                struct drm_i915_gem_object *obj)
 {
@@ -89,7 +77,7 @@ static int vgpu_gem_get_pages(
        for_each_sg(st->sgl, sg, page_num, i) {
                dma_addr_t dma_addr =
                        GEN8_DECODE_PTE(readq(&gtt_entries[i]));
-               if (vgpu_pin_dma_address(vgpu, PAGE_SIZE, dma_addr)) {
+               if (intel_gvt_dma_pin_guest_page(vgpu, dma_addr)) {
                        ret = -EINVAL;
                        goto out;
                }

diff --git a/drivers/gpu/drm/i915/gvt/gvt.h b/drivers/gpu/drm/i915/gvt/gvt.h
index 4e42e6a..938f572 100644 (file)
--- a/drivers/gpu/drm/i915/gvt/gvt.h
+++ b/drivers/gpu/drm/i915/gvt/gvt.h
@@ -767,6 +767,7 @@ void intel_gvt_debugfs_clean(struct intel_gvt *gvt);
 
 int intel_gvt_page_track_add(struct intel_vgpu *info, u64 gfn);
 int intel_gvt_page_track_remove(struct intel_vgpu *info, u64 gfn);
+int intel_gvt_dma_pin_guest_page(struct intel_vgpu *vgpu, dma_addr_t dma_addr);
 int intel_gvt_dma_map_guest_page(struct intel_vgpu *vgpu, unsigned long gfn,
                unsigned long size, dma_addr_t *dma_addr);
 void intel_gvt_dma_unmap_guest_page(struct intel_vgpu *vgpu,

diff --git a/drivers/gpu/drm/i915/gvt/hypercall.h b/drivers/gpu/drm/i915/gvt/hypercall.h
index ba03b33..d49437a 100644 (file)
--- a/drivers/gpu/drm/i915/gvt/hypercall.h
+++ b/drivers/gpu/drm/i915/gvt/hypercall.h
@@ -45,8 +45,6 @@ struct intel_vgpu;
 struct intel_gvt_mpt {
        int (*host_init)(struct device *dev, void *gvt);
        void (*host_exit)(struct device *dev, void *gvt);
-
-       int (*dma_pin_guest_page)(struct intel_vgpu *vgpu, dma_addr_t dma_addr);
 };
 
 #endif /* _GVT_HYPERCALL_H_ */

diff --git a/drivers/gpu/drm/i915/gvt/kvmgt.c b/drivers/gpu/drm/i915/gvt/kvmgt.c
index a022740..606b2cb 100644 (file)
--- a/drivers/gpu/drm/i915/gvt/kvmgt.c
+++ b/drivers/gpu/drm/i915/gvt/kvmgt.c
@@ -1921,8 +1921,7 @@ err_unlock:
        return ret;
 }
 
-static int kvmgt_dma_pin_guest_page(struct intel_vgpu *vgpu,
-               dma_addr_t dma_addr)
+int intel_gvt_dma_pin_guest_page(struct intel_vgpu *vgpu, dma_addr_t dma_addr)
 {
        struct gvt_dma *entry;
        int ret = 0;
@@ -1968,7 +1967,6 @@ void intel_gvt_dma_unmap_guest_page(struct intel_vgpu *vgpu,
 static const struct intel_gvt_mpt kvmgt_mpt = {
        .host_init = kvmgt_host_init,
        .host_exit = kvmgt_host_exit,
-       .dma_pin_guest_page = kvmgt_dma_pin_guest_page,
 };
 
 struct intel_gvt_host intel_gvt_host = {

diff --git a/drivers/gpu/drm/i915/gvt/mpt.h b/drivers/gpu/drm/i915/gvt/mpt.h
index 26c1ee6..3be602a 100644 (file)
--- a/drivers/gpu/drm/i915/gvt/mpt.h
+++ b/drivers/gpu/drm/i915/gvt/mpt.h
@@ -71,19 +71,4 @@ static inline void intel_gvt_hypervisor_host_exit(struct device *dev, void *gvt)
        intel_gvt_host.mpt->host_exit(dev, gvt);
 }
 
-/**
- * intel_gvt_hypervisor_dma_pin_guest_page - pin guest dma buf
- * @vgpu: a vGPU
- * @dma_addr: guest dma addr
- *
- * Returns:
- * 0 on success, negative error code if failed.
- */
-static inline int
-intel_gvt_hypervisor_dma_pin_guest_page(struct intel_vgpu *vgpu,
-                                       dma_addr_t dma_addr)
-{
-       return intel_gvt_host.mpt->dma_pin_guest_page(vgpu, dma_addr);
-}
-
 #endif /* _GVT_MPT_H_ */