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-rw-r--r--include/asm-arm/cacheflush.h7
-rw-r--r--include/asm-arm/mmu_context.h5
2 files changed, 12 insertions, 0 deletions
diff --git a/include/asm-arm/cacheflush.h b/include/asm-arm/cacheflush.h
index 759a97b56ee..559fb4af1f6 100644
--- a/include/asm-arm/cacheflush.h
+++ b/include/asm-arm/cacheflush.h
@@ -410,6 +410,13 @@ extern void flush_dcache_page(struct page *);
extern void __flush_dcache_page(struct address_space *mapping, struct page *page);
+static inline void __flush_icache_all(void)
+{
+ asm("mcr p15, 0, %0, c7, c5, 0 @ invalidate I-cache\n"
+ :
+ : "r" (0));
+}
+
#define ARCH_HAS_FLUSH_ANON_PAGE
static inline void flush_anon_page(struct vm_area_struct *vma,
struct page *page, unsigned long vmaddr)
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);