From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: linuxppc-dev@lists.ozlabs.org
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>,
Anton Blanchard <anton@au1.ibm.com>
Subject: [RFC/PATCH 1/4] powerpc/64/kexec: NULL check "clear_all" in kexec_sequence
Date: Wed, 06 Jul 2016 14:33:21 +1000 [thread overview]
Message-ID: <1467779601.13965.99.camel@kernel.crashing.org> (raw)
With Radix, it can be NULL even on !BOOKE these days so replace
the ifdef with a NULL check which is cleaner anyway.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
Currently only compile tested
arch/powerpc/kernel/misc_64.S | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S
index 5974837..5ae00fd 100644
--- a/arch/powerpc/kernel/misc_64.S
+++ b/arch/powerpc/kernel/misc_64.S
@@ -659,7 +659,9 @@ _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 */
#if !defined(_CALL_ELF) || _CALL_ELF != 2
ld r12,0(r27) /* deref function descriptor */
@@ -668,7 +670,6 @@ _GLOBAL(kexec_sequence)
#endif
mtctr r12
bctrl /* mmu_hash_ops.hpte_clear_all(void); */
-#endif /* !CONFIG_PPC_BOOK3E */
/*
* kexec image calling is:
@@ -695,7 +696,7 @@ _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
reply other threads:[~2016-07-06 4:33 UTC|newest]
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