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[3/6] powerpc: Increase exceptions arrays in paca struct to save PPR

Message ID 1351666462.32304.16.camel@hbabu-laptop (mailing list archive)
State Changes Requested
Delegated to: Benjamin Herrenschmidt
Headers show

Commit Message

Haren Myneni Oct. 31, 2012, 6:54 a.m. UTC 
[PATCH 3/6] powerpc: Increase exceptions arrays in paca struct to save PPR

Using paca to save user defined PPR value in the first level exception vector.

Signed-off-by: Haren Myneni <haren@us.ibm.com>
---
 arch/powerpc/include/asm/exception-64s.h |    1 +
 arch/powerpc/include/asm/paca.h          |    6 +++---
 2 files changed, 4 insertions(+), 3 deletions(-)
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Patch

diff --git a/arch/powerpc/include/asm/exception-64s.h b/arch/powerpc/include/asm/exception-64s.h
index 45702e0..bfd3f1f 100644
--- a/arch/powerpc/include/asm/exception-64s.h
+++ b/arch/powerpc/include/asm/exception-64s.h
@@ -47,6 +47,7 @@ 
 #define EX_R3		64
 #define EX_LR		72
 #define EX_CFAR		80
+#define EX_PPR		88	/* SMT thread status register (priority) */
 
 /*
  * We're short on space and time in the exception prolog, so we can't
diff --git a/arch/powerpc/include/asm/paca.h b/arch/powerpc/include/asm/paca.h
index e9e7a69..c47d687 100644
--- a/arch/powerpc/include/asm/paca.h
+++ b/arch/powerpc/include/asm/paca.h
@@ -93,9 +93,9 @@  struct paca_struct {
 	 * Now, starting in cacheline 2, the exception save areas
 	 */
 	/* used for most interrupts/exceptions */
-	u64 exgen[11] __attribute__((aligned(0x80)));
-	u64 exmc[11];		/* used for machine checks */
-	u64 exslb[11];		/* used for SLB/segment table misses
+	u64 exgen[12] __attribute__((aligned(0x80)));
+	u64 exmc[12];		/* used for machine checks */
+	u64 exslb[12];		/* used for SLB/segment table misses
  				 * on the linear mapping */
 	/* SLB related definitions */
 	u16 vmalloc_sllp;