From: Liu Yi L <yi.l.liu@intel.com>
To: alex.williamson@redhat.com, jgg@nvidia.com, hch@lst.de,
jasowang@redhat.com, joro@8bytes.org
Cc: jean-philippe@linaro.org, kevin.tian@intel.com,
parav@mellanox.com, lkml@metux.net, pbonzini@redhat.com,
lushenming@huawei.com, eric.auger@redhat.com, corbet@lwn.net,
ashok.raj@intel.com, yi.l.liu@intel.com,
yi.l.liu@linux.intel.com, jun.j.tian@intel.com, hao.wu@intel.com,
dave.jiang@intel.com, jacob.jun.pan@linux.intel.com,
kwankhede@nvidia.com, robin.murphy@arm.com, kvm@vger.kernel.org,
iommu@lists.linux-foundation.org, dwmw2@infradead.org,
linux-kernel@vger.kernel.org, baolu.lu@linux.intel.com,
david@gibson.dropbear.id.au, nicolinc@nvidia.com
Subject: [RFC 14/20] iommu/iommufd: Add iommufd_device_[de]attach_ioasid()
Date: Sun, 19 Sep 2021 14:38:42 +0800 [thread overview]
Message-ID: <20210919063848.1476776-15-yi.l.liu@intel.com> (raw)
In-Reply-To: <20210919063848.1476776-1-yi.l.liu@intel.com>
An I/O address space takes effect in the iommu only after it's attached
by a device. This patch provides iommufd_device_[de/at]tach_ioasid()
helpers for this purpose. One device can be only attached to one ioasid
at this point, but one ioasid can be attached by multiple devices.
The caller specifies the iommufd_device (returned at binding time) and
the target ioasid when calling the helper function. Upon request, iommufd
installs the specified I/O page table to the correct place in the IOMMU,
according to the routing information (struct device* which represents
RID) recorded in iommufd_device. Future variants could allow the caller
to specify additional routing information (e.g. pasid/ssid) when multiple
I/O address spaces are supported per device.
Open:
Per Jason's comment in below link, bus-specific wrappers are recommended.
This RFC implements one wrapper for pci device. But it looks that struct
pci_device is not used at all since iommufd_ device already carries all
necessary info. So want to have another discussion on its necessity, e.g.
whether making more sense to have bus-specific wrappers for binding, while
leaving a common attaching helper per iommufd_device.
https://lore.kernel.org/linux-iommu/20210528233649.GB3816344@nvidia.com/
TODO:
When multiple devices are attached to a same ioasid, the permitted iova
ranges and supported pgsize bitmap on this ioasid should be a common
subset of all attached devices. iommufd needs to track such info per
ioasid and update it every time when a new device is attached to the
ioasid. This has not been done in this version yet, due to the temporary
hack adopted in patch 16-18. The hack reuses vfio type1 driver which
already includes the necessary logic for iova ranges and pgsize bitmap.
Once we get a clear direction for those patches, that logic will be moved
to this patch.
Signed-off-by: Liu Yi L <yi.l.liu@intel.com>
---
drivers/iommu/iommufd/iommufd.c | 226 ++++++++++++++++++++++++++++++++
include/linux/iommufd.h | 29 ++++
2 files changed, 255 insertions(+)
diff --git a/drivers/iommu/iommufd/iommufd.c b/drivers/iommu/iommufd/iommufd.c
index e45d76359e34..25373a0e037a 100644
--- a/drivers/iommu/iommufd/iommufd.c
+++ b/drivers/iommu/iommufd/iommufd.c
@@ -51,6 +51,19 @@ struct iommufd_ioas {
bool enforce_snoop;
struct iommufd_ctx *ictx;
refcount_t refs;
+ struct mutex lock;
+ struct list_head device_list;
+ struct iommu_domain *domain;
+};
+
+/*
+ * An ioas_device_info object is created per each successful attaching
+ * request. A list of objects are maintained per ioas when the address
+ * space is shared by multiple devices.
+ */
+struct ioas_device_info {
+ struct iommufd_device *idev;
+ struct list_head next;
};
static int iommufd_fops_open(struct inode *inode, struct file *filep)
@@ -119,6 +132,21 @@ static void iommufd_ctx_put(struct iommufd_ctx *ictx)
kfree(ictx);
}
+static struct iommufd_ioas *ioasid_get_ioas(struct iommufd_ctx *ictx, int ioasid)
+{
+ struct iommufd_ioas *ioas;
+
+ if (ioasid < 0)
+ return NULL;
+
+ mutex_lock(&ictx->lock);
+ ioas = xa_load(&ictx->ioasid_xa, ioasid);
+ if (ioas)
+ refcount_inc(&ioas->refs);
+ mutex_unlock(&ictx->lock);
+ return ioas;
+}
+
/* Caller should hold ictx->lock */
static void ioas_put_locked(struct iommufd_ioas *ioas)
{
@@ -128,11 +156,28 @@ static void ioas_put_locked(struct iommufd_ioas *ioas)
if (!refcount_dec_and_test(&ioas->refs))
return;
+ WARN_ON(!list_empty(&ioas->device_list));
xa_erase(&ictx->ioasid_xa, ioasid);
iommufd_ctx_put(ictx);
kfree(ioas);
}
+/*
+ * Caller should hold a ictx reference when calling this function
+ * otherwise ictx might be freed in ioas_put_locked() then the last
+ * unlock becomes problematic. Alternatively we could have a fresh
+ * implementation of ioas_put instead of calling the locked function.
+ * In this case it can ensure ictx is freed after mutext_unlock().
+ */
+static void ioas_put(struct iommufd_ioas *ioas)
+{
+ struct iommufd_ctx *ictx = ioas->ictx;
+
+ mutex_lock(&ictx->lock);
+ ioas_put_locked(ioas);
+ mutex_unlock(&ictx->lock);
+}
+
static int iommufd_ioasid_alloc(struct iommufd_ctx *ictx, unsigned long arg)
{
struct iommu_ioasid_alloc req;
@@ -178,6 +223,9 @@ static int iommufd_ioasid_alloc(struct iommufd_ctx *ictx, unsigned long arg)
iommufd_ctx_get(ictx);
ioas->ictx = ictx;
+ mutex_init(&ioas->lock);
+ INIT_LIST_HEAD(&ioas->device_list);
+
refcount_set(&ioas->refs, 1);
return ioasid;
@@ -344,6 +392,166 @@ static struct miscdevice iommu_misc_dev = {
.mode = 0666,
};
+/* Caller should hold ioas->lock */
+static struct ioas_device_info *ioas_find_device(struct iommufd_ioas *ioas,
+ struct iommufd_device *idev)
+{
+ struct ioas_device_info *ioas_dev;
+
+ list_for_each_entry(ioas_dev, &ioas->device_list, next) {
+ if (ioas_dev->idev == idev)
+ return ioas_dev;
+ }
+
+ return NULL;
+}
+
+static void ioas_free_domain_if_empty(struct iommufd_ioas *ioas)
+{
+ if (list_empty(&ioas->device_list)) {
+ iommu_domain_free(ioas->domain);
+ ioas->domain = NULL;
+ }
+}
+
+static int ioas_check_device_compatibility(struct iommufd_ioas *ioas,
+ struct device *dev)
+{
+ bool snoop = false;
+ u32 addr_width;
+ int ret;
+
+ /*
+ * currently we only support I/O page table with iommu enforce-snoop
+ * format. Attaching a device which doesn't support this format in its
+ * upstreaming iommu is rejected.
+ */
+ ret = iommu_device_get_info(dev, IOMMU_DEV_INFO_FORCE_SNOOP, &snoop);
+ if (ret || !snoop)
+ return -EINVAL;
+
+ ret = iommu_device_get_info(dev, IOMMU_DEV_INFO_ADDR_WIDTH, &addr_width);
+ if (ret || addr_width < ioas->addr_width)
+ return -EINVAL;
+
+ /* TODO: also need to check permitted iova ranges and pgsize bitmap */
+
+ return 0;
+}
+
+/**
+ * iommufd_device_attach_ioasid - attach device to an ioasid
+ * @idev: [in] Pointer to struct iommufd_device.
+ * @ioasid: [in] ioasid points to an I/O address space.
+ *
+ * Returns 0 for successful attach, otherwise returns error.
+ *
+ */
+int iommufd_device_attach_ioasid(struct iommufd_device *idev, int ioasid)
+{
+ struct iommufd_ioas *ioas;
+ struct ioas_device_info *ioas_dev;
+ struct iommu_domain *domain;
+ int ret;
+
+ ioas = ioasid_get_ioas(idev->ictx, ioasid);
+ if (!ioas) {
+ pr_err_ratelimited("Trying to attach illegal or unkonwn IOASID %u\n", ioasid);
+ return -EINVAL;
+ }
+
+ mutex_lock(&ioas->lock);
+
+ /* Check for duplicates */
+ if (ioas_find_device(ioas, idev)) {
+ ret = -EINVAL;
+ goto out_unlock;
+ }
+
+ ret = ioas_check_device_compatibility(ioas, idev->dev);
+ if (ret)
+ goto out_unlock;
+
+ ioas_dev = kzalloc(sizeof(*ioas_dev), GFP_KERNEL);
+ if (!ioas_dev) {
+ ret = -ENOMEM;
+ goto out_unlock;
+ }
+
+ /*
+ * Each ioas is backed by an iommu domain, which is allocated
+ * when the ioas is attached for the first time and then shared
+ * by following devices.
+ */
+ if (list_empty(&ioas->device_list)) {
+ struct iommu_domain *d;
+
+ d = iommu_domain_alloc(idev->dev->bus);
+ if (!d) {
+ ret = -ENOMEM;
+ goto out_free;
+ }
+ ioas->domain = d;
+ }
+ domain = ioas->domain;
+
+ /* Install the I/O page table to the iommu for this device */
+ ret = iommu_attach_device(domain, idev->dev);
+ if (ret)
+ goto out_domain;
+
+ ioas_dev->idev = idev;
+ list_add(&ioas_dev->next, &ioas->device_list);
+ mutex_unlock(&ioas->lock);
+
+ return 0;
+out_domain:
+ ioas_free_domain_if_empty(ioas);
+out_free:
+ kfree(ioas_dev);
+out_unlock:
+ mutex_unlock(&ioas->lock);
+ ioas_put(ioas);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(iommufd_device_attach_ioasid);
+
+/**
+ * iommufd_device_detach_ioasid - Detach an ioasid from a device.
+ * @idev: [in] Pointer to struct iommufd_device.
+ * @ioasid: [in] ioasid points to an I/O address space.
+ *
+ */
+void iommufd_device_detach_ioasid(struct iommufd_device *idev, int ioasid)
+{
+ struct iommufd_ioas *ioas;
+ struct ioas_device_info *ioas_dev;
+
+ ioas = ioasid_get_ioas(idev->ictx, ioasid);
+ if (!ioas)
+ return;
+
+ mutex_lock(&ioas->lock);
+ ioas_dev = ioas_find_device(ioas, idev);
+ if (!ioas_dev) {
+ mutex_unlock(&ioas->lock);
+ goto out;
+ }
+
+ list_del(&ioas_dev->next);
+ iommu_detach_device(ioas->domain, idev->dev);
+ ioas_free_domain_if_empty(ioas);
+ kfree(ioas_dev);
+ mutex_unlock(&ioas->lock);
+
+ /* release the reference acquired at the start of this function */
+ ioas_put(ioas);
+out:
+ ioas_put(ioas);
+}
+EXPORT_SYMBOL_GPL(iommufd_device_detach_ioasid);
+
/**
* iommufd_bind_device - Bind a physical device marked by a device
* cookie to an iommu fd.
@@ -426,8 +634,26 @@ EXPORT_SYMBOL_GPL(iommufd_bind_device);
void iommufd_unbind_device(struct iommufd_device *idev)
{
struct iommufd_ctx *ictx = idev->ictx;
+ struct iommufd_ioas *ioas;
+ unsigned long index;
mutex_lock(&ictx->lock);
+ xa_for_each(&ictx->ioasid_xa, index, ioas) {
+ struct ioas_device_info *ioas_dev;
+
+ mutex_lock(&ioas->lock);
+ ioas_dev = ioas_find_device(ioas, idev);
+ if (!ioas_dev) {
+ mutex_unlock(&ioas->lock);
+ continue;
+ }
+ list_del(&ioas_dev->next);
+ iommu_detach_device(ioas->domain, idev->dev);
+ ioas_free_domain_if_empty(ioas);
+ kfree(ioas_dev);
+ mutex_unlock(&ioas->lock);
+ ioas_put_locked(ioas);
+ }
xa_erase(&ictx->device_xa, idev->id);
mutex_unlock(&ictx->lock);
/* Exit the security context */
diff --git a/include/linux/iommufd.h b/include/linux/iommufd.h
index 1dd6515e7816..01a4fe934143 100644
--- a/include/linux/iommufd.h
+++ b/include/linux/iommufd.h
@@ -13,6 +13,7 @@
#include <linux/errno.h>
#include <linux/err.h>
#include <linux/device.h>
+#include <linux/pci.h>
#define IOMMUFD_IOASID_MAX ((unsigned int)(0x7FFFFFFF))
#define IOMMUFD_IOASID_MIN 0
@@ -27,6 +28,16 @@ struct iommufd_device *
iommufd_bind_device(int fd, struct device *dev, u64 dev_cookie);
void iommufd_unbind_device(struct iommufd_device *idev);
+int iommufd_device_attach_ioasid(struct iommufd_device *idev, int ioasid);
+void iommufd_device_detach_ioasid(struct iommufd_device *idev, int ioasid);
+
+static inline int
+__pci_iommufd_device_attach_ioasid(struct pci_dev *pdev,
+ struct iommufd_device *idev, int ioasid)
+{
+ return iommufd_device_attach_ioasid(idev, ioasid);
+}
+
#else /* !CONFIG_IOMMUFD */
static inline struct iommufd_device *
iommufd_bind_device(int fd, struct device *dev, u64 dev_cookie)
@@ -37,5 +48,23 @@ iommufd_bind_device(int fd, struct device *dev, u64 dev_cookie)
static inline void iommufd_unbind_device(struct iommufd_device *idev)
{
}
+
+static inline int iommufd_device_attach_ioasid(struct iommufd_device *idev,
+ int ioasid)
+{
+ return -ENODEV;
+}
+
+static inline void iommufd_device_detach_ioasid(struct iommufd_device *idev,
+ int ioasid)
+{
+}
+
+static inline int
+__pci_iommufd_device_attach_ioasid(struct pci_dev *pdev,
+ struct iommufd_device *idev, int ioasid)
+{
+ return -ENODEV;
+}
#endif /* CONFIG_IOMMUFD */
#endif /* __LINUX_IOMMUFD_H */
--
2.25.1
next prev parent reply other threads:[~2021-09-19 6:43 UTC|newest]
Thread overview: 274+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-19 6:38 [RFC 00/20] Introduce /dev/iommu for userspace I/O address space management Liu Yi L
2021-09-19 6:38 ` [RFC 01/20] iommu/iommufd: Add /dev/iommu core Liu Yi L
2021-09-21 15:41 ` Jason Gunthorpe
2021-09-22 1:51 ` Tian, Kevin
2021-09-22 12:40 ` Jason Gunthorpe
2021-09-22 13:59 ` Tian, Kevin
2021-09-22 14:10 ` Jason Gunthorpe
2021-10-15 9:18 ` Liu, Yi L
2021-10-15 11:18 ` Jason Gunthorpe
2021-10-15 11:29 ` Liu, Yi L
2021-10-19 16:57 ` Jacob Pan
2021-10-19 16:57 ` Jason Gunthorpe
2021-10-19 17:11 ` Jacob Pan
2021-10-19 17:12 ` Jason Gunthorpe
2021-09-19 6:38 ` [RFC 02/20] vfio: Add device class for /dev/vfio/devices Liu Yi L
2021-09-21 15:57 ` Jason Gunthorpe
2021-09-21 23:56 ` Tian, Kevin
2021-09-22 0:55 ` Jason Gunthorpe
2021-09-22 1:07 ` Tian, Kevin
2021-09-22 12:31 ` Jason Gunthorpe
2021-09-22 3:22 ` Tian, Kevin
2021-09-22 12:50 ` Jason Gunthorpe
2021-09-22 14:09 ` Tian, Kevin
2021-09-21 19:56 ` Alex Williamson
2021-09-22 0:56 ` Tian, Kevin
2021-09-29 2:08 ` David Gibson
2021-09-29 19:05 ` Alex Williamson
2021-09-30 2:43 ` David Gibson
2021-10-20 12:39 ` Liu, Yi L
2021-09-19 6:38 ` [RFC 03/20] vfio: Add vfio_[un]register_device() Liu Yi L
2021-09-21 16:01 ` Jason Gunthorpe
2021-09-21 23:10 ` Tian, Kevin
2021-09-22 0:53 ` Jason Gunthorpe
2021-09-22 0:59 ` Tian, Kevin
2021-09-22 9:23 ` Tian, Kevin
2021-09-22 12:22 ` Jason Gunthorpe
2021-09-22 13:44 ` Tian, Kevin
2021-09-22 20:10 ` Alex Williamson
2021-09-22 22:34 ` Tian, Kevin
2021-09-22 22:45 ` Alex Williamson
2021-09-22 23:45 ` Tian, Kevin
2021-09-22 23:52 ` Jason Gunthorpe
2021-09-23 0:38 ` Tian, Kevin
2021-09-22 23:56 ` Jason Gunthorpe
2021-09-22 0:54 ` Tian, Kevin
2021-09-22 1:00 ` Jason Gunthorpe
2021-09-22 1:02 ` Tian, Kevin
2021-09-23 7:25 ` Eric Auger
2021-09-23 11:44 ` Jason Gunthorpe
2021-09-29 2:46 ` david
2021-09-29 12:22 ` Jason Gunthorpe
2021-09-30 2:48 ` david
2021-09-29 2:43 ` David Gibson
2021-09-29 3:40 ` Tian, Kevin
2021-09-29 5:30 ` Tian, Kevin
2021-09-29 7:08 ` Cornelia Huck
2021-09-29 12:15 ` Jason Gunthorpe
2021-09-19 6:38 ` [RFC 04/20] iommu: Add iommu_device_get_info interface Liu Yi L
2021-09-21 16:19 ` Jason Gunthorpe
2021-09-22 2:31 ` Lu Baolu
2021-09-22 5:07 ` Christoph Hellwig
2021-09-29 2:52 ` David Gibson
2021-09-29 9:25 ` Lu Baolu
2021-09-29 9:29 ` Lu Baolu
2021-09-19 6:38 ` [RFC 05/20] vfio/pci: Register device to /dev/vfio/devices Liu Yi L
2021-09-21 16:40 ` Jason Gunthorpe
2021-09-21 21:09 ` Alex Williamson
2021-09-21 21:58 ` Jason Gunthorpe
2021-09-22 1:24 ` Tian, Kevin
2021-09-22 1:19 ` Tian, Kevin
2021-09-22 21:17 ` Alex Williamson
2021-09-22 23:49 ` Tian, Kevin
2021-09-19 6:38 ` [RFC 06/20] iommu: Add iommu_device_init[exit]_user_dma interfaces Liu Yi L
2021-09-21 17:09 ` Jason Gunthorpe
2021-09-22 1:47 ` Tian, Kevin
2021-09-22 12:39 ` Jason Gunthorpe
2021-09-22 13:56 ` Tian, Kevin
2021-09-27 9:42 ` Tian, Kevin
2021-09-27 11:34 ` Lu Baolu
2021-09-27 13:08 ` Tian, Kevin
2021-09-27 11:53 ` Jason Gunthorpe
2021-09-27 13:00 ` Tian, Kevin
2021-09-27 13:09 ` Jason Gunthorpe
2021-09-27 13:32 ` Tian, Kevin
2021-09-27 14:39 ` Jason Gunthorpe
2021-09-28 7:13 ` Tian, Kevin
2021-09-28 11:54 ` Jason Gunthorpe
2021-09-28 23:59 ` Tian, Kevin
2021-09-27 19:19 ` Alex Williamson
2021-09-28 7:43 ` Tian, Kevin
2021-09-28 16:26 ` Alex Williamson
2021-09-27 15:09 ` Jason Gunthorpe
2021-09-28 7:30 ` Tian, Kevin
2021-09-28 11:57 ` Jason Gunthorpe
2021-09-28 13:35 ` Lu Baolu
2021-09-28 14:07 ` Jason Gunthorpe
2021-09-29 0:38 ` Tian, Kevin
2021-09-29 12:59 ` Jason Gunthorpe
2021-10-15 1:29 ` Tian, Kevin
2021-10-15 11:09 ` Jason Gunthorpe
2021-10-18 1:52 ` Tian, Kevin
2021-09-29 2:22 ` Lu Baolu
2021-09-29 2:29 ` Tian, Kevin
2021-09-29 2:38 ` Lu Baolu
2021-09-29 4:55 ` David Gibson
2021-09-29 5:38 ` Tian, Kevin
2021-09-29 6:35 ` David Gibson
2021-09-29 7:31 ` Tian, Kevin
2021-09-30 3:05 ` David Gibson
2021-09-29 12:57 ` Jason Gunthorpe
2021-09-30 3:09 ` David Gibson
2021-09-30 22:28 ` Jason Gunthorpe
2021-10-01 3:54 ` David Gibson
2021-09-19 6:38 ` [RFC 07/20] iommu/iommufd: Add iommufd_[un]bind_device() Liu Yi L
2021-09-21 17:14 ` Jason Gunthorpe
2021-10-15 9:21 ` Liu, Yi L
2021-09-29 5:25 ` David Gibson
2021-09-29 12:24 ` Jason Gunthorpe
2021-09-30 3:10 ` David Gibson
2021-10-01 12:43 ` Jason Gunthorpe
2021-10-07 1:23 ` David Gibson
2021-10-07 11:35 ` Jason Gunthorpe
2021-10-11 3:24 ` David Gibson
2021-09-19 6:38 ` [RFC 08/20] vfio/pci: Add VFIO_DEVICE_BIND_IOMMUFD Liu Yi L
2021-09-21 17:29 ` Jason Gunthorpe
2021-09-22 21:01 ` Alex Williamson
2021-09-22 23:01 ` Jason Gunthorpe
2021-09-29 6:00 ` David Gibson
2021-09-29 6:41 ` Tian, Kevin
2021-09-29 12:28 ` Jason Gunthorpe
2021-09-29 22:34 ` Tian, Kevin
2021-09-30 3:12 ` David Gibson
2021-09-19 6:38 ` [RFC 09/20] iommu: Add page size and address width attributes Liu Yi L
2021-09-22 13:42 ` Eric Auger
2021-09-22 14:19 ` Tian, Kevin
2021-09-19 6:38 ` [RFC 10/20] iommu/iommufd: Add IOMMU_DEVICE_GET_INFO Liu Yi L
2021-09-21 17:40 ` Jason Gunthorpe
2021-09-22 3:30 ` Tian, Kevin
2021-09-22 12:41 ` Jason Gunthorpe
2021-09-29 6:18 ` david
2021-09-22 21:24 ` Alex Williamson
2021-09-22 23:49 ` Jason Gunthorpe
2021-09-23 3:10 ` Tian, Kevin
2021-09-23 10:15 ` Jean-Philippe Brucker
2021-09-23 11:27 ` Jason Gunthorpe
2021-09-23 12:05 ` Tian, Kevin
2021-09-23 12:22 ` Jason Gunthorpe
2021-09-29 8:48 ` Tian, Kevin
2021-09-29 12:36 ` Jason Gunthorpe
2021-09-30 8:30 ` Tian, Kevin
2021-09-30 10:33 ` Jean-Philippe Brucker
2021-09-30 22:04 ` Jason Gunthorpe
2021-10-01 3:28 ` hch
2021-10-14 8:13 ` Tian, Kevin
2021-10-14 8:22 ` hch
2021-10-14 8:29 ` Tian, Kevin
2021-10-14 8:01 ` Tian, Kevin
2021-10-14 9:16 ` Jean-Philippe Brucker
2021-09-30 8:49 ` Tian, Kevin
2021-09-30 13:43 ` Lu Baolu
2021-10-01 3:24 ` hch
2021-09-30 22:08 ` Jason Gunthorpe
2021-09-23 11:36 ` Jason Gunthorpe
[not found] ` <BN9PR11MB5433409DF766AAEF1BB2CF258CA39@BN9PR11MB5433.namprd11.prod.outlook.com>
2021-09-23 3:38 ` Tian, Kevin
2021-09-23 11:42 ` Jason Gunthorpe
2021-09-30 9:35 ` Tian, Kevin
2021-09-30 22:23 ` Jason Gunthorpe
2021-10-01 3:30 ` hch
2021-10-14 9:11 ` Tian, Kevin
2021-10-14 15:42 ` Jason Gunthorpe
2021-10-15 1:01 ` Tian, Kevin
[not found] ` <BN9PR11MB543327BB6D58AEF91AD2C9D18CB99@BN9PR11MB5433.namprd11.prod.outlook.com>
2021-10-21 2:26 ` Tian, Kevin
2021-10-21 14:58 ` Jean-Philippe Brucker
2021-10-21 23:22 ` Jason Gunthorpe
2021-10-22 7:49 ` Jean-Philippe Brucker
2021-10-25 16:51 ` Jason Gunthorpe
2021-10-21 23:30 ` Jason Gunthorpe
2021-10-22 3:08 ` Tian, Kevin
2021-10-25 23:34 ` Jason Gunthorpe
2021-10-27 1:42 ` Tian, Kevin
2021-10-28 2:07 ` Tian, Kevin
2021-10-29 13:55 ` Jason Gunthorpe
2021-09-29 6:23 ` David Gibson
2021-09-19 6:38 ` [RFC 11/20] iommu/iommufd: Add IOMMU_IOASID_ALLOC/FREE Liu Yi L
2021-09-21 17:44 ` Jason Gunthorpe
2021-09-22 3:40 ` Tian, Kevin
2021-09-22 14:09 ` Jason Gunthorpe
2021-09-23 9:14 ` Tian, Kevin
2021-09-23 12:06 ` Jason Gunthorpe
2021-09-23 12:22 ` Tian, Kevin
2021-09-23 12:31 ` Jason Gunthorpe
2021-09-23 12:45 ` Tian, Kevin
2021-09-23 13:01 ` Jason Gunthorpe
2021-09-23 13:20 ` Tian, Kevin
2021-09-23 13:30 ` Jason Gunthorpe
2021-09-23 13:41 ` Tian, Kevin
2021-10-01 6:30 ` david
2021-10-01 6:26 ` david
2021-10-01 6:19 ` david
2021-10-01 12:25 ` Jason Gunthorpe
2021-10-02 4:21 ` david
2021-10-02 12:25 ` Jason Gunthorpe
2021-10-11 5:37 ` david
2021-10-11 17:17 ` Jason Gunthorpe
2021-10-14 4:33 ` david
2021-10-14 15:06 ` Jason Gunthorpe
2021-10-18 3:40 ` david
2021-10-01 6:15 ` david
2021-09-22 12:51 ` Liu, Yi L
2021-09-22 13:32 ` Jason Gunthorpe
2021-09-23 6:26 ` Liu, Yi L
2021-10-01 6:13 ` David Gibson
2021-10-01 12:22 ` Jason Gunthorpe
2021-10-11 6:02 ` David Gibson
2021-10-11 8:49 ` Jean-Philippe Brucker
2021-10-11 23:38 ` Jason Gunthorpe
2021-10-12 8:33 ` Jean-Philippe Brucker
2021-10-13 7:14 ` Tian, Kevin
2021-10-13 7:07 ` Tian, Kevin
2021-10-14 4:38 ` David Gibson
2021-10-11 18:49 ` Jason Gunthorpe
2021-10-14 4:53 ` David Gibson
2021-10-14 14:52 ` Jason Gunthorpe
2021-10-18 3:50 ` David Gibson
2021-10-18 17:42 ` Jason Gunthorpe
2021-09-22 13:45 ` Jean-Philippe Brucker
2021-09-29 10:47 ` Liu, Yi L
2021-10-01 6:11 ` David Gibson
2021-10-13 7:00 ` Tian, Kevin
2021-10-14 5:00 ` David Gibson
2021-10-14 6:53 ` Tian, Kevin
2021-10-25 5:05 ` David Gibson
2021-10-27 2:32 ` Tian, Kevin
2021-09-19 6:38 ` [RFC 12/20] iommu/iommufd: Add IOMMU_CHECK_EXTENSION Liu Yi L
2021-09-21 17:47 ` Jason Gunthorpe
2021-09-22 3:41 ` Tian, Kevin
2021-09-22 12:55 ` Jason Gunthorpe
2021-09-22 14:13 ` Tian, Kevin
2021-09-19 6:38 ` [RFC 13/20] iommu: Extend iommu_at[de]tach_device() for multiple devices group Liu Yi L
2021-10-14 5:24 ` David Gibson
2021-10-14 7:06 ` Tian, Kevin
2021-10-18 3:57 ` David Gibson
2021-10-18 16:32 ` Jason Gunthorpe
2021-10-25 5:14 ` David Gibson
2021-10-25 12:14 ` Jason Gunthorpe
2021-10-25 13:16 ` David Gibson
2021-10-25 23:36 ` Jason Gunthorpe
2021-10-26 9:23 ` David Gibson
2021-09-19 6:38 ` Liu Yi L [this message]
2021-09-21 18:02 ` [RFC 14/20] iommu/iommufd: Add iommufd_device_[de]attach_ioasid() Jason Gunthorpe
2021-09-22 3:53 ` Tian, Kevin
2021-09-22 12:57 ` Jason Gunthorpe
2021-09-22 14:16 ` Tian, Kevin
2021-09-19 6:38 ` [RFC 15/20] vfio/pci: Add VFIO_DEVICE_[DE]ATTACH_IOASID Liu Yi L
2021-09-21 18:04 ` Jason Gunthorpe
2021-09-22 3:56 ` Tian, Kevin
2021-09-22 12:58 ` Jason Gunthorpe
2021-09-22 14:17 ` Tian, Kevin
2021-09-19 6:38 ` [RFC 16/20] vfio/type1: Export symbols for dma [un]map code sharing Liu Yi L
2021-09-21 18:14 ` Jason Gunthorpe
2021-09-22 3:57 ` Tian, Kevin
2021-09-19 6:38 ` [RFC 17/20] iommu/iommufd: Report iova range to userspace Liu Yi L
2021-09-22 14:49 ` Jean-Philippe Brucker
2021-09-29 10:44 ` Liu, Yi L
2021-09-29 12:07 ` Jean-Philippe Brucker
2021-09-29 12:31 ` Jason Gunthorpe
2021-09-19 6:38 ` [RFC 18/20] iommu/iommufd: Add IOMMU_[UN]MAP_DMA on IOASID Liu Yi L
2021-09-19 6:38 ` [RFC 19/20] iommu/vt-d: Implement device_info iommu_ops callback Liu Yi L
2021-09-19 6:38 ` [RFC 20/20] Doc: Add documentation for /dev/iommu Liu Yi L
2021-10-29 0:15 ` David Gibson
2021-10-29 12:44 ` Jason Gunthorpe
2021-09-19 6:45 ` [RFC 00/20] Introduce /dev/iommu for userspace I/O address space management Liu, Yi L
2021-09-21 13:45 ` Jason Gunthorpe
2021-09-22 3:25 ` Liu, Yi L
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