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Diffstat (limited to 'arch/powerpc/kernel/misc_64.S')
-rw-r--r--arch/powerpc/kernel/misc_64.S30
1 files changed, 21 insertions, 9 deletions
diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S
index cb195157b318..9f0bed214bcb 100644
--- a/arch/powerpc/kernel/misc_64.S
+++ b/arch/powerpc/kernel/misc_64.S
@@ -66,7 +66,7 @@ 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
@@ -109,7 +109,8 @@ END_FTR_SECTION_IFSET(CPU_FTR_COHERENT_ICACHE)
bdnz 2b
isync
blr
- .previous .text
+_ASM_NOKPROBE_SYMBOL(flush_icache_range)
+
/*
* Like above, but only do the D-cache.
*
@@ -591,7 +592,8 @@ 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
@@ -627,7 +629,7 @@ _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 */
@@ -639,15 +641,24 @@ _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
@@ -659,7 +670,9 @@ _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 */
@@ -668,7 +681,6 @@ _GLOBAL(kexec_sequence)
#endif
mtctr r12
bctrl /* mmu_hash_ops.hpte_clear_all(void); */
-#endif /* !CONFIG_PPC_BOOK3E */
/*
* kexec image calling is:
@@ -695,7 +707,7 @@ _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