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| author |   Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2016-08-10 17:27:34 +1000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2016-08-10 19:41:58 +1000 |
| commit | 97f6e0cc35026a2a09147a6da636d901525e1969 (patch) | |
| tree | e2662c33b890c9715a6af4ab8f52cb81db00bf4b /arch/powerpc/kernel/setup_32.c | |
| parent | powerpc: Update obsolete comment in setup_32.c about early_init() (diff) | |
| download | linux-dev-97f6e0cc35026a2a09147a6da636d901525e1969.tar.xz linux-dev-97f6e0cc35026a2a09147a6da636d901525e1969.zip | |
powerpc/32: Fix crash during static key init
We cannot do those initializations from apply_feature_fixups() as
this function runs in a very restricted environment on 32-bit where
the kernel isn't running at its linked address and the PTRRELOC()
macro must be used for any global accesss.
Instead, split them into a separtate steup_feature_keys() function
which is called in a more suitable spot on ppc32.
Fixes: 309b315b6ec6 ("powerpc: Call jump_label_init() in apply_feature_fixups()")
Reported-and-tested-by: Christian Kujau <lists@nerdbynature.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/kernel/setup_32.c')
| -rw-r--r-- | arch/powerpc/kernel/setup_32.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/setup_32.c b/arch/powerpc/kernel/setup_32.c index f10a975baa5e..24ec3ea4b3a2 100644 --- a/arch/powerpc/kernel/setup_32.c +++ b/arch/powerpc/kernel/setup_32.c @@ -100,6 +100,9 @@ extern unsigned int memset_nocache_branch; /* Insn to be replaced by NOP */ notrace void __init machine_init(u64 dt_ptr) { + /* Configure static keys first, now that we're relocated. */ + setup_feature_keys(); + /* Enable early debugging if any specified (see udbg.h) */ udbg_early_init(); |