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authorCatalin Marinas <catalin.marinas@arm.com>2008-06-13 10:28:36 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2008-07-03 16:39:57 +0100
commit826cbdaff29764bb6928c715c6a025e49469dda9 (patch)
tree0fa040b3be05d88291eb5dca05f77202ad56ab45 /include/asm-arm/mmu_context.h
parent43df5220e455d426ec7462d0bf906e686c65ebb5 (diff)
[ARM] 5092/1: Fix the I-cache invalidation on ARMv6 and later CPUs
This patch adds the I-cache invalidation in update_mmu_cache if the corresponding vma is marked as executable. It also invalidates the I-cache if a thread migrates to a CPU it never ran on. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'include/asm-arm/mmu_context.h')
-rw-r--r--include/asm-arm/mmu_context.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/asm-arm/mmu_context.h b/include/asm-arm/mmu_context.h
index 6913d02ca5d..91b9dfdfed5 100644
--- a/include/asm-arm/mmu_context.h
+++ b/include/asm-arm/mmu_context.h
@@ -97,6 +97,11 @@ switch_mm(struct mm_struct *prev, struct mm_struct *next,
#ifdef CONFIG_MMU
unsigned int cpu = smp_processor_id();
+#ifdef CONFIG_SMP
+ /* check for possible thread migration */
+ if (!cpus_empty(next->cpu_vm_mask) && !cpu_isset(cpu, next->cpu_vm_mask))
+ __flush_icache_all();
+#endif
if (!cpu_test_and_set(cpu, next->cpu_vm_mask) || prev != next) {
check_context(next);
cpu_switch_mm(next->pgd, next);