From: Yi Liu <yi.l.liu@intel.com>
To: alex.williamson@redhat.com, jgg@nvidia.com, kevin.tian@intel.com
Cc: joro@8bytes.org, robin.murphy@arm.com, cohuck@redhat.com,
eric.auger@redhat.com, nicolinc@nvidia.com, kvm@vger.kernel.org,
mjrosato@linux.ibm.com, chao.p.peng@linux.intel.com,
yi.l.liu@intel.com, yi.y.sun@linux.intel.com, peterx@redhat.com,
jasowang@redhat.com, shameerali.kolothum.thodi@huawei.com,
lulu@redhat.com, suravee.suthikulpanit@amd.com,
intel-gvt-dev@lists.freedesktop.org,
intel-gfx@lists.freedesktop.org, linux-s390@vger.kernel.org,
xudong.hao@intel.com, yan.y.zhao@intel.com,
terrence.xu@intel.com, yanting.jiang@intel.com
Subject: [PATCH v8 18/24] vfio: Determine noiommu in vfio_device registration
Date: Mon, 27 Mar 2023 02:40:41 -0700 [thread overview]
Message-ID: <20230327094047.47215-19-yi.l.liu@intel.com> (raw)
In-Reply-To: <20230327094047.47215-1-yi.l.liu@intel.com>
This adds a noiommu flag in vfio_device, hence caller of the
vfio_device_is_noiommu() just refers to the flag for noiommu
check.
Signed-off-by: Yi Liu <yi.l.liu@intel.com>
---
drivers/vfio/group.c | 2 +-
drivers/vfio/vfio.h | 6 +++---
drivers/vfio/vfio_main.c | 2 ++
include/linux/vfio.h | 1 +
4 files changed, 7 insertions(+), 4 deletions(-)
diff --git a/drivers/vfio/group.c b/drivers/vfio/group.c
index 8f09e4541c3a..b0a73d82662e 100644
--- a/drivers/vfio/group.c
+++ b/drivers/vfio/group.c
@@ -192,7 +192,7 @@ static int vfio_device_group_open(struct vfio_device_file *df)
vfio_device_group_get_kvm_safe(device);
df->iommufd = device->group->iommufd;
- if (df->iommufd && vfio_device_is_noiommu(device)) {
+ if (df->iommufd && device->noiommu) {
if (device->open_count == 0) {
ret = vfio_iommufd_enable_noiommu_compat(device,
df->iommufd);
diff --git a/drivers/vfio/vfio.h b/drivers/vfio/vfio.h
index b47b186573ac..41dfc9d5205a 100644
--- a/drivers/vfio/vfio.h
+++ b/drivers/vfio/vfio.h
@@ -108,10 +108,10 @@ bool vfio_device_has_container(struct vfio_device *device);
int __init vfio_group_init(void);
void vfio_group_cleanup(void);
-static inline bool vfio_device_is_noiommu(struct vfio_device *vdev)
+static inline void vfio_device_set_noiommu(struct vfio_device *device)
{
- return IS_ENABLED(CONFIG_VFIO_NOIOMMU) &&
- vdev->group->type == VFIO_NO_IOMMU;
+ device->noiommu = IS_ENABLED(CONFIG_VFIO_NOIOMMU) &&
+ device->group->type == VFIO_NO_IOMMU;
}
#if IS_ENABLED(CONFIG_VFIO_CONTAINER)
diff --git a/drivers/vfio/vfio_main.c b/drivers/vfio/vfio_main.c
index eb53b1f8c828..805c34c7b0ef 100644
--- a/drivers/vfio/vfio_main.c
+++ b/drivers/vfio/vfio_main.c
@@ -277,6 +277,8 @@ static int __vfio_register_dev(struct vfio_device *device,
if (ret)
return ret;
+ vfio_device_set_noiommu(device);
+
ret = device_add(&device->device);
if (ret)
goto err_out;
diff --git a/include/linux/vfio.h b/include/linux/vfio.h
index 580cfc5728e8..5c06af04ed9e 100644
--- a/include/linux/vfio.h
+++ b/include/linux/vfio.h
@@ -62,6 +62,7 @@ struct vfio_device {
struct iommufd_device *iommufd_device;
bool iommufd_attached;
#endif
+ bool noiommu;
};
/**
--
2.34.1
next prev parent reply other threads:[~2023-03-27 9:41 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-27 9:40 [PATCH v8 00/24] Add vfio_device cdev for iommufd support Yi Liu
2023-03-27 9:40 ` [PATCH v8 01/24] vfio: Allocate per device file structure Yi Liu
2023-03-27 9:40 ` [PATCH v8 02/24] vfio: Refine vfio file kAPIs for KVM Yi Liu
2023-03-27 9:40 ` [PATCH v8 03/24] vfio: Remove vfio_file_is_group() Yi Liu
2023-03-30 23:50 ` Jason Gunthorpe
2023-03-27 9:40 ` [PATCH v8 04/24] vfio: Accept vfio device file in the KVM facing kAPI Yi Liu
2023-03-27 9:40 ` [PATCH v8 05/24] kvm/vfio: Rename kvm_vfio_group to prepare for accepting vfio device fd Yi Liu
2023-03-27 9:40 ` [PATCH v8 06/24] kvm/vfio: Accept vfio device file from userspace Yi Liu
2023-03-27 9:40 ` [PATCH v8 07/24] vfio: Pass struct vfio_device_file * to vfio_device_open/close() Yi Liu
2023-03-27 9:40 ` [PATCH v8 08/24] vfio: Block device access via device fd until device is opened Yi Liu
2023-03-28 21:33 ` Alex Williamson
2023-03-29 2:23 ` Liu, Yi L
2023-03-27 9:40 ` [PATCH v8 09/24] vfio: Add cdev_device_open_cnt to vfio_group Yi Liu
2023-03-27 9:40 ` [PATCH v8 10/24] vfio: Make vfio_device_open() single open for device cdev path Yi Liu
2023-03-30 23:52 ` Jason Gunthorpe
2023-03-27 9:40 ` [PATCH v8 11/24] vfio: Make vfio_device_first_open() to accept NULL iommufd for noiommu Yi Liu
2023-03-30 23:56 ` Jason Gunthorpe
2023-03-27 9:40 ` [PATCH v8 12/24] vfio-iommufd: Move noiommu support out of vfio_iommufd_bind() Yi Liu
2023-03-27 9:40 ` [PATCH v8 13/24] vfio-iommufd: Split bind/attach into two steps Yi Liu
2023-03-27 9:40 ` [PATCH v8 14/24] vfio: Record devid in vfio_device_file Yi Liu
2023-03-27 9:40 ` [PATCH v8 15/24] vfio-iommufd: Add detach_ioas support for physical VFIO devices Yi Liu
2023-03-27 9:40 ` [PATCH v8 16/24] iommufd/device: Add iommufd_access_detach() API Yi Liu
2023-03-28 2:23 ` Jon Pan-Doh
2023-03-28 15:54 ` Nicolin Chen
2023-03-29 2:24 ` Liu, Yi L
2023-03-27 9:40 ` [PATCH v8 17/24] vfio-iommufd: Add detach_ioas support for emulated VFIO devices Yi Liu
2023-03-27 9:40 ` Yi Liu [this message]
2023-03-28 6:36 ` [PATCH v8 18/24] vfio: Determine noiommu in vfio_device registration Tian, Kevin
2023-03-27 9:40 ` [PATCH v8 19/24] vfio: Name noiommu vfio_device with "noiommu-" prefix Yi Liu
2023-03-28 6:37 ` Tian, Kevin
2023-03-27 9:40 ` [PATCH v8 20/24] vfio: Add cdev for vfio_device Yi Liu
2023-03-29 19:57 ` Alex Williamson
2023-03-30 5:35 ` Liu, Yi L
2023-03-27 9:40 ` [PATCH v8 21/24] vfio: Add VFIO_DEVICE_BIND_IOMMUFD Yi Liu
2023-03-29 21:00 ` Alex Williamson
2023-03-29 23:22 ` Jason Gunthorpe
2023-03-30 12:52 ` Liu, Yi L
2023-03-30 12:59 ` Jason Gunthorpe
2023-03-30 7:09 ` Liu, Yi L
2023-03-30 11:52 ` Jason Gunthorpe
2023-03-30 12:53 ` Liu, Yi L
2023-03-27 9:40 ` [PATCH v8 22/24] vfio: Add VFIO_DEVICE_AT[DE]TACH_IOMMUFD_PT Yi Liu
2023-03-29 21:19 ` Alex Williamson
2023-03-30 13:02 ` Liu, Yi L
2023-03-27 9:40 ` [PATCH v8 23/24] vfio: Compile group optionally Yi Liu
2023-03-29 21:51 ` Alex Williamson
2023-03-30 13:06 ` Liu, Yi L
2023-03-27 9:40 ` [PATCH v8 24/24] docs: vfio: Add vfio device cdev description Yi Liu
2023-03-29 22:47 ` Alex Williamson
2023-03-29 22:57 ` Alex Williamson
2023-03-30 13:11 ` Liu, Yi L
2023-03-27 17:48 ` [PATCH v8 00/24] Add vfio_device cdev for iommufd support Nicolin Chen
2023-03-31 3:10 ` Jiang, Yanting
2023-03-31 5:01 ` Jiang, Yanting
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