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authorWill Deacon <will.deacon@arm.com>2014-05-02 16:24:15 +0100
committerCatalin Marinas <catalin.marinas@arm.com>2014-05-09 17:21:24 +0100
commitdc60b777fcdddbadab111028e266fd69d4702b34 (patch)
treed839ce1021b5f64b2925d8f20230cb9564f3e11e /arch/arm64/mm/proc.S
parentee9e101c11478680d579bd20bb38a4d3e2514fe3 (diff)
arm64: mm: use inner-shareable barriers for inner-shareable maintenance
In order to ensure ordering and completion of inner-shareable maintenance instructions (cache and TLB) on AArch64, we can use the -ish suffix to the dmb and dsb instructions respectively. This patch updates our low-level cache and tlb maintenance routines to use the inner-shareable barrier variants where appropriate. Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Will Deacon <will.deacon@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.S2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm64/mm/proc.S b/arch/arm64/mm/proc.S
index 9042aff5e9e..7736779c980 100644
--- a/arch/arm64/mm/proc.S
+++ b/arch/arm64/mm/proc.S
@@ -182,7 +182,7 @@ ENDPROC(cpu_do_switch_mm)
ENTRY(__cpu_setup)
ic iallu // I+BTB cache invalidate
tlbi vmalle1is // invalidate I + D TLBs
- dsb sy
+ dsb ish
mov x0, #3 << 20
msr cpacr_el1, x0 // Enable FP/ASIMD