sh: Provide a global TLB flush for U/I-TLB clear.
This provides a sledgehammer approach for clearing the TLBs, only to be
used in cases where we know we will never want to use the mappings again
and have no interest in preserving state. This also destroys wired
entries.
The primary use for this is when we are either entering or exiting the
kernel completely, in the latter case as a precursor for CPU reset by
MMU.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/include/asm/tlbflush.h b/arch/sh/include/asm/tlbflush.h
index e0ac972..0df66f0 100644
--- a/arch/sh/include/asm/tlbflush.h
+++ b/arch/sh/include/asm/tlbflush.h
@@ -21,6 +21,8 @@
unsigned long end);
extern void local_flush_tlb_one(unsigned long asid, unsigned long page);
+extern void __flush_tlb_global(void);
+
#ifdef CONFIG_SMP
extern void flush_tlb_all(void);