15 Aug
2024
15 Aug
'24
11:42 p.m.
On Thu, Aug 15, 2024 at 12:53:04PM -0700, Nicolin Chen wrote:
Maybe the iommufd_viommu_invalidate ioctl handler should hold that xa_lock around the viommu->ops->cache_invalidate, and then add lock assert in iommufd_viommu_find_device?
xa_lock/spinlock might be too heavy. We can have a mutex to wrap around viommu ioctl handlers..
A rw semaphore might be reasonable.
Jason