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powerpc/pseries: Disable interrupts around IOMMU percpu data accesses
authorAnton Blanchard <anton@samba.org>
Sun, 3 Jun 2012 19:42:13 +0000 (19:42 +0000)
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>
Tue, 3 Jul 2012 04:14:46 +0000 (14:14 +1000)
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>
arch/powerpc/platforms/pseries/iommu.c patch | blob | history

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