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| author | Allen Kay <allen.m.kay@intel.com> | 2011-10-14 12:32:46 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-12-21 12:57:37 -0800 |
| commit | 5341e68f9b6c25c0a062de6d730034640988a605 (patch) | |
| tree | 57d0741bf8617f8ff29bdf9a1cf070863bf1c34a /mm/percpu.c | |
| parent | c46f906e93c81844de1c41e2e6fc1a6a36131c4f (diff) | |
| download | kernel_samsung_smdk4412-5341e68f9b6c25c0a062de6d730034640988a605.zip kernel_samsung_smdk4412-5341e68f9b6c25c0a062de6d730034640988a605.tar.gz kernel_samsung_smdk4412-5341e68f9b6c25c0a062de6d730034640988a605.tar.bz2 | |
intel-iommu: fix superpage support in pfn_to_dma_pte()
commit 4399c8bf2b9093696fa8160d79712e7346989c46 upstream.
If target_level == 0, current code breaks out of the while-loop if
SUPERPAGE bit is set. We should also break out if PTE is not present.
If we don't do this, KVM calls to iommu_iova_to_phys() will cause
pfn_to_dma_pte() to create mapping for 4KiB pages.
Signed-off-by: Allen Kay <allen.m.kay@intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Youquan Song <youquan.song@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'mm/percpu.c')
0 files changed, 0 insertions, 0 deletions