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-rw-r--r--include/asm-parisc/processor.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/include/asm-parisc/processor.h b/include/asm-parisc/processor.h
index c72b8fa4968..4313618c98e 100644
--- a/include/asm-parisc/processor.h
+++ b/include/asm-parisc/processor.h
@@ -332,6 +332,19 @@ extern unsigned long get_wchan(struct task_struct *p);
#define cpu_relax() barrier()
+/* Used as a macro to identify the combined VIPT/PIPT cached
+ * CPUs which require a guarantee of coherency (no inequivalent
+ * aliases with different data, whether clean or not) to operate */
+static inline int parisc_requires_coherency(void)
+{
+#ifdef CONFIG_PA8X00
+ /* FIXME: also pa8900 - when we see one */
+ return boot_cpu_data.cpu_type == mako;
+#else
+ return 0;
+#endif
+}
+
#endif /* __ASSEMBLY__ */
#endif /* __ASM_PARISC_PROCESSOR_H */