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| author | Joakim Tjernlund <joakim.tjernlund@transmode.se> | 2009-12-29 06:10:58 +0100 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2010-01-15 03:20:07 +0100 |
| commit | 9f4f04ba2b117a5c741d019629d7ffccdc621122 (patch) | |
| tree | 3a96a7c0263b01b4706a665e9d9cbfc76d3f7011 /lib/locking-selftest-wlock-softirq.h | |
| parent | Merge branch 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/air... (diff) | |
| download | linux-9f4f04ba2b117a5c741d019629d7ffccdc621122.tar.xz linux-9f4f04ba2b117a5c741d019629d7ffccdc621122.zip | |
powerpc/8xx: Always pin kernel instruction TLB
Various kernel asm modifies SRR0/SRR1 just before executing
a rfi. If such code crosses a page boundary you risk a TLB miss
which will clobber SRR0/SRR1. Avoid this by always pinning
kernel instruction TLB space.
Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'lib/locking-selftest-wlock-softirq.h')
0 files changed, 0 insertions, 0 deletions