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| author | Mark Rutland <mark.rutland@arm.com> | 2016-01-25 11:44:58 +0000 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2016-02-16 15:10:44 +0000 |
| commit | 9e8e865bbe294a69666a1996bda3e87825b258c0 (patch) | |
| tree | 7db1b6aab086829a70608ca1895c2b66fb5697e4 /arch/arm64/kernel/smp.c | |
| parent | 5227cfa71f9e8574373f4d0e9e754942d76cdf67 (diff) | |
| download | lwn-9e8e865bbe294a69666a1996bda3e87825b258c0.tar.gz lwn-9e8e865bbe294a69666a1996bda3e87825b258c0.zip | |
arm64: unify idmap removal
We currently open-code the removal of the idmap and restoration of the
current task's MMU state in a few places.
Before introducing yet more copies of this sequence, unify these to call
a new helper, cpu_uninstall_idmap.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Tested-by: Jeremy Linton <jeremy.linton@arm.com>
Cc: Laura Abbott <labbott@fedoraproject.org>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/kernel/smp.c')
| -rw-r--r-- | arch/arm64/kernel/smp.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c index b1adc51b2c2e..68e7f79630d4 100644 --- a/arch/arm64/kernel/smp.c +++ b/arch/arm64/kernel/smp.c @@ -149,9 +149,7 @@ asmlinkage void secondary_start_kernel(void) * TTBR0 is only used for the identity mapping at this stage. Make it * point to zero page to avoid speculatively fetching new entries. */ - cpu_set_reserved_ttbr0(); - local_flush_tlb_all(); - cpu_set_default_tcr_t0sz(); + cpu_uninstall_idmap(); preempt_disable(); trace_hardirqs_off(); |