From feb211ea4f45708fc86fafe1d1f099db728b20f6 Mon Sep 17 00:00:00 2001
From: Michael Neuling <mikey@neuling.org>
Date: Mon, 5 Nov 2012 17:10:35 +1100
Subject: [PATCH] --- yaml --- r: 346813 b: refs/heads/master c:
 61e2390ede3cea186cc01f5f3d0c9eb570c42c40 h: refs/heads/master i:   346811:
 37d101ec0ba721fffe9e47a1019f44ddec3363e3 v: v3

---
 [refs]                                         | 2 +-
 trunk/arch/powerpc/include/asm/exception-64s.h | 3 ++-
 trunk/arch/powerpc/kernel/exceptions-64s.S     | 4 ++--
 trunk/arch/powerpc/kernel/setup_64.c           | 5 +++++
 4 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/[refs] b/[refs]
index af1fddaebe09..21f59e415e89 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: faab4dd2d281d42cb46b16e36f769be59c0a7338
+refs/heads/master: 61e2390ede3cea186cc01f5f3d0c9eb570c42c40
diff --git a/trunk/arch/powerpc/include/asm/exception-64s.h b/trunk/arch/powerpc/include/asm/exception-64s.h
index a43c1473915f..9258daac4964 100644
--- a/trunk/arch/powerpc/include/asm/exception-64s.h
+++ b/trunk/arch/powerpc/include/asm/exception-64s.h
@@ -55,7 +55,8 @@
  * word.
  */
 #define LOAD_HANDLER(reg, label)					\
-	addi	reg,reg,(label)-_stext;	/* virt addr of handler ... */
+	/* Handlers must be within 64K of kbase, which must be 64k aligned */ \
+	ori	reg,reg,(label)-_stext;	/* virt addr of handler ... */
 
 /* Exception register prefixes */
 #define EXC_HV	H
diff --git a/trunk/arch/powerpc/kernel/exceptions-64s.S b/trunk/arch/powerpc/kernel/exceptions-64s.S
index de029640ba26..0969b7ff0f87 100644
--- a/trunk/arch/powerpc/kernel/exceptions-64s.S
+++ b/trunk/arch/powerpc/kernel/exceptions-64s.S
@@ -585,8 +585,8 @@ __end_interrupts:
  * Code from here down to __end_handlers is invoked from the
  * exception prologs above.  Because the prologs assemble the
  * addresses of these handlers using the LOAD_HANDLER macro,
- * which uses an addi instruction, these handlers must be in
- * the first 32k of the kernel image.
+ * which uses an ori instruction, these handlers must be in
+ * the first 64k of the kernel image.
  */
 
 /*** Common interrupt handlers ***/
diff --git a/trunk/arch/powerpc/kernel/setup_64.c b/trunk/arch/powerpc/kernel/setup_64.c
index efb6a41b3131..6da881b35dac 100644
--- a/trunk/arch/powerpc/kernel/setup_64.c
+++ b/trunk/arch/powerpc/kernel/setup_64.c
@@ -601,6 +601,11 @@ void __init setup_arch(char **cmdline_p)
 
 	kvm_linear_init();
 
+	/* Interrupt code needs to be 64K-aligned */
+	if ((unsigned long)_stext & 0xffff)
+		panic("Kernelbase not 64K-aligned (0x%lx)!\n",
+		      (unsigned long)_stext);
+
 	ppc64_boot_msg(0x15, "Setup Done");
 }