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| author | Will Deacon | 2014-05-02 17:24:15 +0200 |
|---|---|---|
| committer | Catalin Marinas | 2014-05-09 18:21:24 +0200 |
| commit | dc60b777fcdddbadab111028e266fd69d4702b34 (patch) | |
| tree | d839ce1021b5f64b2925d8f20230cb9564f3e11e /arch/arm64/mm/cache.S | |
| parent | arm64: kvm: use inner-shareable barriers for inner-shareable maintenance (diff) | |
| download | kernel-qcow2-linux-dc60b777fcdddbadab111028e266fd69d4702b34.tar.gz kernel-qcow2-linux-dc60b777fcdddbadab111028e266fd69d4702b34.tar.xz kernel-qcow2-linux-dc60b777fcdddbadab111028e266fd69d4702b34.zip | |
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/cache.S')
| -rw-r--r-- | arch/arm64/mm/cache.S | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/arm64/mm/cache.S b/arch/arm64/mm/cache.S index fda756875fa6..23663837acff 100644 --- a/arch/arm64/mm/cache.S +++ b/arch/arm64/mm/cache.S @@ -31,7 +31,7 @@ * Corrupted registers: x0-x7, x9-x11 */ __flush_dcache_all: - dsb sy // ensure ordering with previous memory accesses + dmb sy // ensure ordering with previous memory accesses mrs x0, clidr_el1 // read clidr and x3, x0, #0x7000000 // extract loc from clidr lsr x3, x3, #23 // left align loc bit field @@ -128,7 +128,7 @@ USER(9f, dc cvau, x4 ) // clean D line to PoU add x4, x4, x2 cmp x4, x1 b.lo 1b - dsb sy + dsb ish icache_line_size x2, x3 sub x3, x2, #1 @@ -139,7 +139,7 @@ USER(9f, ic ivau, x4 ) // invalidate I line PoU cmp x4, x1 b.lo 1b 9: // ignore any faulting cache operation - dsb sy + dsb ish isb ret ENDPROC(flush_icache_range) |