X-Git-Url: http://git.cascardo.info/?p=cascardo%2Flinux.git;a=blobdiff_plain;f=arch%2Fpowerpc%2Fkernel%2Fmisc_64.S;h=4f178671f230ccd799a9089ca4389590e94bc703;hp=8b526846e72acf5811a5f56010de0e8dd5610a98;hb=84d69848c97faab0c25aa2667b273404d2e2a64a;hpb=590abbdd273304b55824bcb9ea91840ea375575d

diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S
index 8b526846e72a..4f178671f230 100644
--- a/arch/powerpc/kernel/misc_64.S
+++ b/arch/powerpc/kernel/misc_64.S
@@ -67,7 +67,7 @@ PPC64_CACHES:
  *   flush all bytes from start through stop-1 inclusive
  */
 
-_KPROBE(flush_icache_range)
+_GLOBAL(flush_icache_range)
 BEGIN_FTR_SECTION
 	PURGE_PREFETCHED_INS
 	blr
@@ -110,8 +110,9 @@ END_FTR_SECTION_IFSET(CPU_FTR_COHERENT_ICACHE)
 	bdnz	2b
 	isync
 	blr
-	.previous .text
+_ASM_NOKPROBE_SYMBOL(flush_icache_range)
 EXPORT_SYMBOL(flush_icache_range)
+
 /*
  * Like above, but only do the D-cache.
  *
@@ -595,7 +596,8 @@ real_mode:	/* assume normal blr return */
 #endif
 
 /*
- * kexec_sequence(newstack, start, image, control, clear_all())
+ * kexec_sequence(newstack, start, image, control, clear_all(),
+	          copy_with_mmu_off)
  *
  * does the grungy work with stack switching and real mode switches
  * also does simple calls to other code
@@ -631,7 +633,7 @@ _GLOBAL(kexec_sequence)
 	mr	r29,r5			/* image (virt) */
 	mr	r28,r6			/* control, unused */
 	mr	r27,r7			/* clear_all() fn desc */
-	mr	r26,r8			/* spare */
+	mr	r26,r8			/* copy_with_mmu_off */
 	lhz	r25,PACAHWCPUID(r13)	/* get our phys cpu from paca */
 
 	/* disable interrupts, we are overwriting kernel data next */
@@ -643,15 +645,24 @@ _GLOBAL(kexec_sequence)
 	mtmsrd	r3,1
 #endif
 
+	/* We need to turn the MMU off unless we are in hash mode
+	 * under a hypervisor
+	 */
+	cmpdi	r26,0
+	beq	1f
+	bl	real_mode
+1:
 	/* copy dest pages, flush whole dest image */
 	mr	r3,r29
 	bl	kexec_copy_flush	/* (image) */
 
-	/* turn off mmu */
+	/* turn off mmu now if not done earlier */
+	cmpdi	r26,0
+	bne	1f
 	bl	real_mode
 
 	/* copy  0x100 bytes starting at start to 0 */
-	li	r3,0
+1:	li	r3,0
 	mr	r4,r30		/* start, aka phys mem offset */
 	li	r5,0x100
 	li	r6,0
@@ -663,7 +674,9 @@ _GLOBAL(kexec_sequence)
 	li	r6,1
 	stw	r6,kexec_flag-1b(5)
 
-#ifndef CONFIG_PPC_BOOK3E
+	cmpdi	r27,0
+	beq	1f
+
 	/* clear out hardware hash page table and tlb */
 #ifdef PPC64_ELF_ABI_v1
 	ld	r12,0(r27)		/* deref function descriptor */
@@ -672,7 +685,6 @@ _GLOBAL(kexec_sequence)
 #endif
 	mtctr	r12
 	bctrl				/* mmu_hash_ops.hpte_clear_all(void); */
-#endif /* !CONFIG_PPC_BOOK3E */
 
 /*
  *   kexec image calling is:
@@ -699,7 +711,7 @@ _GLOBAL(kexec_sequence)
  *    are the boot cpu ?????
  *    other device tree differences (prop sizes, va vs pa, etc)...
  */
-	mr	r3,r25	# my phys cpu
+1:	mr	r3,r25	# my phys cpu
 	mr	r4,r30	# start, aka phys mem offset
 	mtlr	4
 	li	r5,0