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(parent: 9e8066f) | patch
powerpc/kernel: Check features don't change after patching
authorMichael Ellerman <mpe@ellerman.id.au>
Tue, 26 Jul 2016 12:29:18 +0000 (22:29 +1000)
committerMichael Ellerman <mpe@ellerman.id.au>
Mon, 1 Aug 2016 01:14:56 +0000 (11:14 +1000)
commita28e46f109c9637b2539b9995078d5df4f7f6c09
tree954cdde1913d243e517596aab5718dfa65fcd800tree | snapshot (tar.gz zip)
parent9e8066f398396d26010d9c6c3c2538ff25461ef8commit | diff
powerpc/kernel: Check features don't change after patching

Early in boot we binary patch some sections of code based on the CPU and
MMU feature bits. But it is a one-time patching, there is no facility
for repatching the code later if the set of features change.

It is a major bug if the set of features changes after we've done the
code patching - so add a check for it.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
arch/powerpc/lib/feature-fixups.c diff | blob | blame | history