From: Jason Gunthorpe <jgg@nvidia.com>
To: Yi Liu <yi.l.liu@intel.com>
Cc: alex.williamson@redhat.com, kevin.tian@intel.com,
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.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,
zhenzhong.duan@intel.com, clegoate@redhat.com
Subject: Re: [PATCH v7 3/9] iommufd: Reserve all negative IDs in the iommufd xarray
Date: Tue, 13 Jun 2023 08:46:28 -0300 [thread overview]
Message-ID: <ZIhXFNELB/ZtTiba@nvidia.com> (raw)
In-Reply-To: <20230602121515.79374-4-yi.l.liu@intel.com>
On Fri, Jun 02, 2023 at 05:15:09AM -0700, Yi Liu wrote:
> With this reservation, IOMMUFD users can encode the negative IDs for
> specific purposes. e.g. VFIO needs two reserved values to tell userspace
> the ID returned is not valid but has other meaning.
>
> Tested-by: Terrence Xu <terrence.xu@intel.com>
> Signed-off-by: Yi Liu <yi.l.liu@intel.com>
> ---
> drivers/iommu/iommufd/main.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Jason
next prev parent reply other threads:[~2023-06-13 11:46 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-02 12:15 [PATCH v7 0/9] Enhance vfio PCI hot reset for vfio cdev device Yi Liu
2023-06-02 12:15 ` [PATCH v7 1/9] vfio/pci: Update comment around group_fd get in vfio_pci_ioctl_pci_hot_reset() Yi Liu
2023-06-02 12:15 ` [PATCH v7 2/9] vfio/pci: Move the existing hot reset logic to be a helper Yi Liu
2023-06-02 12:15 ` [PATCH v7 3/9] iommufd: Reserve all negative IDs in the iommufd xarray Yi Liu
2023-06-13 11:46 ` Jason Gunthorpe [this message]
2023-06-02 12:15 ` [PATCH v7 4/9] iommufd: Add iommufd_ctx_has_group() Yi Liu
2023-06-08 21:40 ` Alex Williamson
2023-06-08 23:44 ` Liu, Yi L
2023-06-13 11:46 ` Jason Gunthorpe
2023-06-02 12:15 ` [PATCH v7 5/9] iommufd: Add helper to retrieve iommufd_ctx and devid Yi Liu
2023-06-13 11:47 ` Jason Gunthorpe
2023-06-02 12:15 ` [PATCH v7 6/9] vfio: Mark cdev usage in vfio_device Yi Liu
2023-06-13 17:56 ` Jason Gunthorpe
2023-06-14 5:56 ` Liu, Yi L
2023-06-14 12:11 ` Jason Gunthorpe
2023-06-02 12:15 ` [PATCH v7 7/9] vfio: Add helper to search vfio_device in a dev_set Yi Liu
2023-06-13 11:47 ` Jason Gunthorpe
2023-06-02 12:15 ` [PATCH v7 8/9] vfio/pci: Extend VFIO_DEVICE_GET_PCI_HOT_RESET_INFO for vfio device cdev Yi Liu
2023-06-08 22:26 ` Alex Williamson
2023-06-09 0:04 ` Liu, Yi L
2023-06-13 11:46 ` Jason Gunthorpe
2023-06-13 12:50 ` Liu, Yi L
2023-06-13 14:32 ` Alex Williamson
2023-06-13 17:40 ` Jason Gunthorpe
2023-06-13 18:23 ` Jason Gunthorpe
2023-06-14 10:35 ` Liu, Yi L
2023-06-14 12:17 ` Jason Gunthorpe
2023-06-14 13:05 ` Liu, Yi L
2023-06-14 13:37 ` Jason Gunthorpe
2023-06-15 3:31 ` Liu, Yi L
2023-06-02 12:15 ` [PATCH v7 9/9] vfio/pci: Allow passing zero-length fd array in VFIO_DEVICE_PCI_HOT_RESET Yi Liu
2023-06-08 22:30 ` Alex Williamson
2023-06-09 0:13 ` Liu, Yi L
2023-06-09 14:38 ` Jason Gunthorpe
2023-06-13 18:09 ` Jason Gunthorpe
2023-06-08 6:59 ` [PATCH v7 0/9] Enhance vfio PCI hot reset for vfio cdev device Jiang, Yanting
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