powerpc/pseries: Disable interrupts around IOMMU percpu data accesses

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tce_buildmulti_pSeriesLP uses a per cpu page to communicate with the
hypervisor. We currently rely on the IOMMU table spinlock but
subsequent patches will be removing that so disable interrupts
around all accesses of tce_page.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

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Anton Blanchard 2012-06-03 19:42:13 +00:00 • committed by Benjamin Herrenschmidt

parent b3f271e86e

commit c1703e85a7

1 changed files with 6 additions and 0 deletions

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arch/powerpc/platforms/pseries/iommu.c

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