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authorNicholas Piggin <npiggin@gmail.com>2021-02-07 13:54:12 +0100
committerMichael Ellerman <mpe@ellerman.id.au>2021-02-08 14:10:50 +0100
commit74c3354bc1d89d53e8da2dcc6f9f6bfc28b2900f (patch)
treeb425ea9c93f11676b45ef202772ee713250adb51 /drivers/atm
parentpowerpc/64: entry cpu time accounting in C (diff)
downloadlinux-74c3354bc1d89d53e8da2dcc6f9f6bfc28b2900f.tar.xz
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powerpc/pseries/mce: restore msr before returning from handler
The pseries real-mode machine check handler can enable the MMU, and return from the handler with the MMU still enabled. This works, but real-mode handler wrapper exit handlers want to rely on the MMU being in real-mode. So change the pseries handler to restore the MSR after it has finished virtual mode tasks. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/1612702361.lm7fqo56re.astroid@bobo.none
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