diff options
| author | Russell King <rmk+kernel@armlinux.org.uk> | 2019-02-13 21:10:19 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-02-20 10:20:47 +0100 |
| commit | 94944687acf7d398099c3841a99553c65201df98 (patch) | |
| tree | 5f9fcf5b46b8cba84b757f1a8501d122bedc4c19 /arch/arm/kernel | |
| parent | 211fcda99be34de8a605181eb9b2a9d4d23c4241 (diff) | |
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>
Tested-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 1a041ad4881e..c1588e31aa83 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 |