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authorMark Rutland <mark.rutland@arm.com>2015-03-13 16:14:34 +0000
committerWill Deacon <will.deacon@arm.com>2015-03-17 16:58:24 +0000
commit137650aad96c9594683445e41afa8ac5a2097520 (patch)
tree3faff891a324ef948471492d3cda2e8ca7ecbcca /arch/arm64/Kconfig
parent1baa82f48030f38d1895301f1ec93acbcb3d15db (diff)
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arm64: apply alternatives for !SMP kernels
Currently we only perform alternative patching for kernels built with CONFIG_SMP, as we call apply_alternatives_all() in smp.c, which is only built for CONFIG_SMP. Thus !SMP kernels may not have necessary alternatives patched in. This patch ensures that we call apply_alternatives_all() once all CPUs are booted, even for !SMP kernels, by having the smp_init_cpus() stub call this for !SMP kernels via up_late_init. A new wrapper, do_post_cpus_up_work, is added so we can hook other calls here later (e.g. boot mode logging). Cc: Andre Przywara <andre.przywara@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Fixes: e039ee4ee3fcf174 ("arm64: add alternative runtime patching") Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/Kconfig')
-rw-r--r--arch/arm64/Kconfig4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 1b8e97331ffb..0d46debbc9a7 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -470,6 +470,10 @@ config HOTPLUG_CPU
source kernel/Kconfig.preempt
+config UP_LATE_INIT
+ def_bool y
+ depends on !SMP
+
config HZ
int
default 100