Re: [PATCH v4 2/2] vfio: no need to pass kvm pointer during device open

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Tested-by: Tony Krowiak <akrowiak@xxxxxxxxxxxxx>

On 2/3/23 4:50 PM, Matthew Rosato wrote:
Nothing uses this value during vfio_device_open anymore so it's safe
to remove it.

Signed-off-by: Matthew Rosato <mjrosato@xxxxxxxxxxxxx>
---
  drivers/vfio/group.c     | 2 +-
  drivers/vfio/vfio.h      | 3 +--
  drivers/vfio/vfio_main.c | 7 +++----
  3 files changed, 5 insertions(+), 7 deletions(-)

diff --git a/drivers/vfio/group.c b/drivers/vfio/group.c
index 98621ac082f0..0e9036e2b9c4 100644
--- a/drivers/vfio/group.c
+++ b/drivers/vfio/group.c
@@ -187,7 +187,7 @@ static int vfio_device_group_open(struct vfio_device *device)
  	if (device->open_count == 0)
  		vfio_device_group_get_kvm_safe(device);
- ret = vfio_device_open(device, device->group->iommufd, device->kvm);
+	ret = vfio_device_open(device, device->group->iommufd);
if (device->open_count == 0)
  		vfio_device_put_kvm(device);
diff --git a/drivers/vfio/vfio.h b/drivers/vfio/vfio.h
index 24d6cd285945..4f39ab549a80 100644
--- a/drivers/vfio/vfio.h
+++ b/drivers/vfio/vfio.h
@@ -18,8 +18,7 @@ struct vfio_container;
void vfio_device_put_registration(struct vfio_device *device);
  bool vfio_device_try_get_registration(struct vfio_device *device);
-int vfio_device_open(struct vfio_device *device,
-		     struct iommufd_ctx *iommufd, struct kvm *kvm);
+int vfio_device_open(struct vfio_device *device, struct iommufd_ctx *iommufd);
  void vfio_device_close(struct vfio_device *device,
  		       struct iommufd_ctx *iommufd);
diff --git a/drivers/vfio/vfio_main.c b/drivers/vfio/vfio_main.c
index 28c47cd6a6b5..3a597e799918 100644
--- a/drivers/vfio/vfio_main.c
+++ b/drivers/vfio/vfio_main.c
@@ -397,7 +397,7 @@ static bool vfio_assert_device_open(struct vfio_device *device)
  }
static int vfio_device_first_open(struct vfio_device *device,
-				  struct iommufd_ctx *iommufd, struct kvm *kvm)
+				  struct iommufd_ctx *iommufd)
  {
  	int ret;
@@ -444,8 +444,7 @@ static void vfio_device_last_close(struct vfio_device *device,
  	module_put(device->dev->driver->owner);
  }
-int vfio_device_open(struct vfio_device *device,
-		     struct iommufd_ctx *iommufd, struct kvm *kvm)
+int vfio_device_open(struct vfio_device *device, struct iommufd_ctx *iommufd)
  {
  	int ret = 0;
@@ -453,7 +452,7 @@ int vfio_device_open(struct vfio_device *device, device->open_count++;
  	if (device->open_count == 1) {
-		ret = vfio_device_first_open(device, iommufd, kvm);
+		ret = vfio_device_first_open(device, iommufd);
  		if (ret)
  			device->open_count--;
  	}



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