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| author | Russell King <rmk+kernel@armlinux.org.uk> | 2019-02-14 09:49:27 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-02-20 10:18:27 +0100 |
| commit | 2dbc7e3efe2ca2e9eb614c66ea725c2116103b56 (patch) | |
| tree | e78e3c9bf4eb9f98bb88d40bad78a3e38b2d72fb /arch/arm/kernel | |
| parent | 15a669ff9b4c6ec66b2efed82428f596f2d19bbd (diff) | |
| download | linux-stable-2dbc7e3efe2ca2e9eb614c66ea725c2116103b56.tar.gz linux-stable-2dbc7e3efe2ca2e9eb614c66ea725c2116103b56.tar.bz2 linux-stable-2dbc7e3efe2ca2e9eb614c66ea725c2116103b56.zip | |
ARM: add PROC_VTABLE and PROC_TABLE macros
Commit e209950fdd065d2cc46e6338e47e52841b830cba upstream.
Allow the way we access members of the processor vtable to be changed
at compile time. We will need to move to per-CPU vtables to fix the
Spectre variant 2 issues on big.Little systems.
However, we have a couple of calls that do not need the vtable
treatment, and indeed cause a kernel warning due to the (later) use
of smp_processor_id(), so also introduce the PROC_TABLE macro for
these which always use CPU 0's function pointers.
Reviewed-by: Julien Thierry <julien.thierry@arm.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David A. Long <dave.long@linaro.org>
Reviewed-by: Julien Thierry <julien.thierry@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'arch/arm/kernel')
| -rw-r--r-- | arch/arm/kernel/setup.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c index 8d5c3a118abe..2eebb67fa08b 100644 --- a/arch/arm/kernel/setup.c +++ b/arch/arm/kernel/setup.c @@ -693,9 +693,7 @@ static void __init setup_processor(void) cpu_name = list->cpu_name; __cpu_architecture = __get_cpu_architecture(); -#ifdef MULTI_CPU - processor = *list->proc; -#endif + init_proc_vtable(list->proc); #ifdef MULTI_TLB cpu_tlb = *list->tlb; #endif |