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authorMichael Ellerman <michael@ellerman.id.au>2012-02-20 21:32:30 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2012-02-22 16:48:49 +1100
commit922b9f86a020258d3ea3bfed27251efaed7a03a3 (patch)
tree5cdb92aed142e9d96c0e38352cbc0d6cb2dd581f /drivers
parent07d2f1a54a78a648093f4f3a33aa86b03cf9e25f (diff)
powerpc: Fix program check handling when lockdep is enabled
In commit 54321242afe ("Disable interrupts early in Program Check"), we switched from enabling to disabling interrupts in program_check_common. Whereas ENABLE_INTS leaves r3 untouched, if lockdep is enabled DISABLE_INTS calls into lockdep code and will clobber r3. That means we pass a bogus struct pt_regs* into program_check_exception() and all hell breaks loose. So load our regs pointer into r3 after we call DISABLE_INTS. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'drivers')
0 files changed, 0 insertions, 0 deletions