linux/arch/parisc/include/asm/prefetch.h, branch v3.4Mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/
https://git.shady.money/linux/atom?h=v3.42012-05-16T12:15:21Z[PARISC] fix panic on prefetch(NULL) on PA7300LC2012-05-16T12:15:21ZJames BottomleyJBottomley@Parallels.com2012-05-16T10:10:27Zurn:sha1:b3cb8674811d1851bbf1486a73d62b90c119b994
Due to an errata, the PA7300LC generates a TLB miss interruption even on the
prefetch instruction. This means that prefetch(NULL), which is supposed to be
a nop on linux actually generates a NULL deref fault. Fix this by testing the
address of prefetch against NULL before doing the prefetch.
Cc: stable@vger.kernel.org
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
parisc: move include/asm-parisc to arch/parisc/include/asm2008-10-10T16:32:29ZKyle McMartinkyle@mcmartin.ca2008-07-29T03:02:13Zurn:sha1:deae26bf6a10e47983606f5df080b91e97650ead