intel-iommu: Kill superfluous mapping_lock

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Since we're using cmpxchg64() anyway (because that's the only way to do
an atomic 64-bit store on i386), we might as well ditch the extra
locking and just use cmpxchg64() to ensure that we don't add the page
twice.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

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This commit is contained in:

David Woodhouse 2009-07-01 19:30:28 +01:00

parent c85994e477

commit 206a73c102

1 changed files with 2 additions and 10 deletions

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drivers/pci/intel-iommu.c

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