linux-kernel - [PATCH 14/21] drm/i915/gvt: devirtualize ->detach

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Message-Id: <20210721155355.173183-15-hch@lst.de>
Date:   Wed, 21 Jul 2021 17:53:48 +0200
From:   Christoph Hellwig <hch@....de>
To:     Jani Nikula <jani.nikula@...ux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        Zhenyu Wang <zhenyuw@...ux.intel.com>,
        Zhi Wang <zhi.a.wang@...el.com>
Cc:     intel-gfx@...ts.freedesktop.org,
        intel-gvt-dev@...ts.freedesktop.org,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: [PATCH 14/21] drm/i915/gvt: devirtualize ->detach_vgpu

Just call the function directly.

Signed-off-by: Christoph Hellwig <hch@....de>
---
 drivers/gpu/drm/i915/gvt/gvt.h       |  1 +
 drivers/gpu/drm/i915/gvt/hypercall.h |  1 -
 drivers/gpu/drm/i915/gvt/kvmgt.c     |  3 +--
 drivers/gpu/drm/i915/gvt/mpt.h       | 16 ----------------
 drivers/gpu/drm/i915/gvt/vgpu.c      |  2 +-
 5 files changed, 3 insertions(+), 20 deletions(-)

diff --git a/drivers/gpu/drm/i915/gvt/gvt.h b/drivers/gpu/drm/i915/gvt/gvt.h
index 1cb4b48d9a25..82cd00a5b904 100644
--- a/drivers/gpu/drm/i915/gvt/gvt.h
+++ b/drivers/gpu/drm/i915/gvt/gvt.h
@@ -580,6 +580,7 @@ void populate_pvinfo_page(struct intel_vgpu *vgpu);
 
 int intel_gvt_scan_and_shadow_workload(struct intel_vgpu_workload *workload);
 void enter_failsafe_mode(struct intel_vgpu *vgpu, int reason);
+void intel_vgpu_detach_regions(struct intel_vgpu *vgpu);
 
 enum {
 	GVT_FAILSAFE_UNSUPPORTED_GUEST,
diff --git a/drivers/gpu/drm/i915/gvt/hypercall.h b/drivers/gpu/drm/i915/gvt/hypercall.h
index 091249a924a8..08c622c4079b 100644
--- a/drivers/gpu/drm/i915/gvt/hypercall.h
+++ b/drivers/gpu/drm/i915/gvt/hypercall.h
@@ -45,7 +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);
-	void (*detach_vgpu)(struct intel_vgpu *vgpu);
 	int (*inject_msi)(struct intel_vgpu *vgpu, u32 addr, u16 data);
 	int (*enable_page_track)(struct intel_vgpu *vgpu, u64 gfn);
 	int (*disable_page_track)(struct intel_vgpu *vgpu, u64 gfn);
diff --git a/drivers/gpu/drm/i915/gvt/kvmgt.c b/drivers/gpu/drm/i915/gvt/kvmgt.c
index 572d51950abb..218c3deaf2b4 100644
--- a/drivers/gpu/drm/i915/gvt/kvmgt.c
+++ b/drivers/gpu/drm/i915/gvt/kvmgt.c
@@ -1839,7 +1839,7 @@ static bool kvmgt_guest_exit(struct intel_vgpu *info)
 	return true;
 }
 
-static void kvmgt_detach_vgpu(struct intel_vgpu *vgpu)
+void intel_vgpu_detach_regions(struct intel_vgpu *vgpu)
 {
 	int i;
 
@@ -2003,7 +2003,6 @@ static bool kvmgt_is_valid_gfn(struct intel_vgpu *vgpu, unsigned long gfn)
 static const struct intel_gvt_mpt kvmgt_mpt = {
 	.host_init = kvmgt_host_init,
 	.host_exit = kvmgt_host_exit,
-	.detach_vgpu = kvmgt_detach_vgpu,
 	.inject_msi = kvmgt_inject_msi,
 	.enable_page_track = kvmgt_page_track_add,
 	.disable_page_track = kvmgt_page_track_remove,
diff --git a/drivers/gpu/drm/i915/gvt/mpt.h b/drivers/gpu/drm/i915/gvt/mpt.h
index 9738aa3377b4..78efcf1e6946 100644
--- a/drivers/gpu/drm/i915/gvt/mpt.h
+++ b/drivers/gpu/drm/i915/gvt/mpt.h
@@ -71,22 +71,6 @@ static inline void intel_gvt_hypervisor_host_exit(struct device *dev, void *gvt)
 	intel_gvt_host.mpt->host_exit(dev, gvt);
 }
 
-/**
- * intel_gvt_hypervisor_detach_vgpu - call hypervisor to release vGPU
- * related stuffs inside hypervisor.
- *
- * Returns:
- * Zero on success, negative error code if failed.
- */
-static inline void intel_gvt_hypervisor_detach_vgpu(struct intel_vgpu *vgpu)
-{
-	/* optional to provide */
-	if (!intel_gvt_host.mpt->detach_vgpu)
-		return;
-
-	intel_gvt_host.mpt->detach_vgpu(vgpu);
-}
-
 #define MSI_CAP_CONTROL(offset) (offset + 2)
 #define MSI_CAP_ADDRESS(offset) (offset + 4)
 #define MSI_CAP_DATA(offset) (offset + 8)
diff --git a/drivers/gpu/drm/i915/gvt/vgpu.c b/drivers/gpu/drm/i915/gvt/vgpu.c
index 2fadd6fea5ac..7a7f768083d2 100644
--- a/drivers/gpu/drm/i915/gvt/vgpu.c
+++ b/drivers/gpu/drm/i915/gvt/vgpu.c
@@ -293,7 +293,7 @@ void intel_gvt_destroy_vgpu(struct intel_vgpu *vgpu)
 	intel_vgpu_clean_opregion(vgpu);
 	intel_vgpu_reset_ggtt(vgpu, true);
 	intel_vgpu_clean_gtt(vgpu);
-	intel_gvt_hypervisor_detach_vgpu(vgpu);
+	intel_vgpu_detach_regions(vgpu);
 	intel_vgpu_free_resource(vgpu);
 	intel_vgpu_clean_mmio(vgpu);
 	intel_vgpu_dmabuf_cleanup(vgpu);
-- 
2.30.2