AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2024-11-26 18:10:51 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity

intel-iommu: Fix reattaching of devices to identity mapping domain

Browse Source 
When we reattach a device to the si_domain (because it's been removed
from a VM), we weren't calling domain_context_mapping() to actually tell
the hardware about that.

We should really put the call to domain_context_mapping() into
domain_add_dev_info() -- we never call the latter without also doing the
former, and we can keep the error paths simple that way. But that's a
cleanup which can wait for 2.6.32 now.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
David Woodhouse 2009-07-04 10:49:46 +01:00
parent 1e4c64c46d
commit 1b7bc0a161
1 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/pci/intel-iommu.c
View File

@ -2475,6 +2475,9 @@ static int iommu_no_mapping(struct pci_dev *pdev)
if (pdev->dma_mask > DMA_BIT_MASK(32)) {
int ret;
ret = domain_add_dev_info(si_domain, pdev);
if (ret)
return 0;
ret = domain_context_mapping(si_domain, pdev, CONTEXT_TT_MULTI_LEVEL);
if (!ret) {
printk(KERN_INFO "64bit %s uses identity mapping\n",
pci_name(pdev));