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| author |   Catalin Marinas <catalin.marinas@arm.com> | 2016-07-01 15:48:55 +0100 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2016-11-21 17:33:47 +0000 |
| commit | f33bcf03e6079668da6bf4eec4a7dcf9289131d0 (patch) | |
| tree | 7ac9ba9224f5d1f56233347bfe23e58b58f1645b /arch/arm64/mm/proc.S | |
| parent | arm64: Factor out PAN enabling/disabling into separate uaccess_* macros (diff) | |
| download | linux-dev-f33bcf03e6079668da6bf4eec4a7dcf9289131d0.tar.xz linux-dev-f33bcf03e6079668da6bf4eec4a7dcf9289131d0.zip | |
arm64: Factor out TTBR0_EL1 post-update workaround into a specific asm macro
This patch takes the errata workaround code out of cpu_do_switch_mm into
a dedicated post_ttbr0_update_workaround macro which will be reused in a
subsequent patch.
Cc: Will Deacon <will.deacon@arm.com>
Cc: James Morse <james.morse@arm.com>
Cc: Kees Cook <keescook@chromium.org>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/mm/proc.S')
| -rw-r--r-- | arch/arm64/mm/proc.S | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/arch/arm64/mm/proc.S b/arch/arm64/mm/proc.S index 6a853a867d9e..32682be978e0 100644 --- a/arch/arm64/mm/proc.S +++ b/arch/arm64/mm/proc.S @@ -142,11 +142,7 @@ ENTRY(cpu_do_switch_mm) bfi x0, x1, #48, #16 // set the ASID msr ttbr0_el1, x0 // set TTBR0 isb -alternative_if ARM64_WORKAROUND_CAVIUM_27456 - ic iallu - dsb nsh - isb -alternative_else_nop_endif + post_ttbr0_update_workaround ret ENDPROC(cpu_do_switch_mm) |