From 065cf519c32984b7a78777aae3859baf5f5fd3d3 Mon Sep 17 00:00:00 2001 From: Catalin Marinas Date: Wed, 9 May 2007 09:50:23 +0100 Subject: [ARM] armv7: add support for asid-tagged VIVT I-cache ARMv7 can have VIPT, PIPT or ASID-tagged VIVT I-cache. This patch adds the necessary invalidation of the I-cache when the ASID numbers are re-used. Signed-off-by: Catalin Marinas Signed-off-by: Russell King --- arch/arm/mm/context.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'arch/arm/mm') diff --git a/arch/arm/mm/context.c b/arch/arm/mm/context.c index 9da43a0fdcd..c9e9a558626 100644 --- a/arch/arm/mm/context.c +++ b/arch/arm/mm/context.c @@ -47,6 +47,13 @@ void __new_context(struct mm_struct *mm) : "r" (0)); isb(); flush_tlb_all(); + if (icache_is_vivt_asid_tagged()) { + asm("mcr p15, 0, %0, c7, c5, 0 @ invalidate I-cache\n" + "mcr p15, 0, %0, c7, c5, 6 @ flush BTAC/BTB\n" + : + : "r" (0)); + dsb(); + } } mm->context.id = asid; -- cgit v1.2.3