> From: Jason Gunthorpe <jgg@xxxxxxxxxx> > Sent: Thursday, January 19, 2023 2:01 AM > > iommufd follows the same design as KVM and uses memory cgroups to limit > the amount of kernel memory a iommufd file descriptor can pin down. The > various internal data structures already use GFP_KERNEL_ACCOUNT. > > However, one of the biggest consumers of kernel memory is the IOPTEs > stored under the iommu_domain. Many drivers will allocate these at > iommu_map() time and will trivially do the right thing if we pass in > GFP_KERNEL_ACCOUNT. > > Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxx> Reviewed-by: Kevin Tian <kevin.tian@xxxxxxxxx>
