powerpc: Make CMO paging space pool ID and page size available

During platform setup, save off the primary/secondary paging space
pool IDs and the page size.  Added accessors in hvcall.h for these
variables.  This is needed for a subsequent fix.

Submitted-by: Robert Jennings <rcj@linux.vnet.ibm.com>

Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 22 insertions, 0 deletions

diff --git a/arch/powerpc/include/asm/hvcall.h b/arch/powerpc/include/asm/hvcall.h
index fbe2932fa9e9..6251a4b10be7 100644
--- a/arch/powerpc/include/asm/hvcall.h
+++ b/arch/powerpc/include/asm/hvcall.h
@@ -291,6 +291,28 @@ struct hvcall_mpp_data {
 };
 
 int h_get_mpp(struct hvcall_mpp_data *);
+
+#ifdef CONFIG_PPC_PSERIES
+extern int CMO_PrPSP;
+extern int CMO_SecPSP;
+extern unsigned long CMO_PageSize;
+
+static inline int cmo_get_primary_psp(void)
+{
+        return CMO_PrPSP;
+}
+
+static inline int cmo_get_secondary_psp(void)
+{
+        return CMO_SecPSP;
+}
+
+static inline unsigned long cmo_get_page_size(void)
+{
+        return CMO_PageSize;
+}
+#endif /* CONFIG_PPC_PSERIES */
+
 #endif /* __ASSEMBLY__ */
 #endif /* __KERNEL__ */
 #endif /* _ASM_POWERPC_HVCALL_H */