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-rw-r--r--arch/powerpc/include/asm/reg.h10
1 files changed, 5 insertions, 5 deletions
diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h
index d17af2b3d4c..2cedbb42761 100644
--- a/arch/powerpc/include/asm/reg.h
+++ b/arch/powerpc/include/asm/reg.h
@@ -649,12 +649,12 @@
* SPRG usage:
*
* All 64-bit:
- * - SPRG3 stores PACA pointer
+ * - SPRG1 stores PACA pointer
*
* 64-bit server:
* - SPRG0 unused (reserved for HV on Power4)
- * - SPRG1 scratch for exception vectors
- * - SPRG2 unused
+ * - SPRG2 scratch for exception vectors
+ * - SPRG3 unused (user visible)
*
* All 32-bit:
* - SPRG3 current thread_info pointer
@@ -700,13 +700,13 @@
*
*/
#ifdef CONFIG_PPC64
-#define SPRN_SPRG_PACA SPRN_SPRG3
+#define SPRN_SPRG_PACA SPRN_SPRG1
#else
#define SPRN_SPRG_THREAD SPRN_SPRG3
#endif
#ifdef CONFIG_PPC_BOOK3S_64
-#define SPRN_SPRG_SCRATCH0 SPRN_SPRG1
+#define SPRN_SPRG_SCRATCH0 SPRN_SPRG2
#endif
#ifdef CONFIG_PPC_BOOK3S_32