Commit 1b7bc0a1 authored Jul 04, 2009 by David Woodhouse

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



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>

parent 1e4c64c4

drivers/pci/intel-iommu.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -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));