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| author |   Andre Przywara <andre.przywara@arm.com> | 2014-11-28 13:40:45 +0000 |
|---|---|---|
| committer |   Will Deacon <will.deacon@arm.com> | 2014-12-04 10:28:24 +0000 |
| commit | 932ded4b0b9bf111fbf9d176ec12152a0d29b0fd (patch) | |
| tree | 72ae4cdbea21713d55576bf12fa8c095d3b48679 /arch/arm64/kernel/smp.c | |
| parent | arm64: perf: Prevent wraparound during overflow (diff) | |
| download | linux-dev-932ded4b0b9bf111fbf9d176ec12152a0d29b0fd.tar.xz linux-dev-932ded4b0b9bf111fbf9d176ec12152a0d29b0fd.zip | |
arm64: add module support for alternatives fixups
Currently the kernel patches all necessary instructions once at boot
time, so modules are not covered by this.
Change the apply_alternatives() function to take a beginning and an
end pointer and introduce a new variant (apply_alternatives_all()) to
cover the existing use case for the static kernel image section.
Add a module_finalize() function to arm64 to check for an
alternatives section in a module and patch only the instructions from
that specific area.
Since that module code is not touched before the module
initialization has ended, we don't need to halt the machine before
doing the patching in the module's code.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/kernel/smp.c')
| -rw-r--r-- | arch/arm64/kernel/smp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c index 0ef87896e4ae..7ae6ee085261 100644 --- a/arch/arm64/kernel/smp.c +++ b/arch/arm64/kernel/smp.c @@ -310,7 +310,7 @@ void cpu_die(void) void __init smp_cpus_done(unsigned int max_cpus) { pr_info("SMP: Total of %d processors activated.\n", num_online_cpus()); - apply_alternatives(); + apply_alternatives_all(); } void __init smp_prepare_boot_cpu(void) |