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From: Balbir Singh <bsingharora@gmail.com>
To: linuxppc-dev@lists.ozlabs.org, mpe@ellerman.id.au
Cc: naveen.n.rao@linux.vnet.ibm.com, christophe.leroy@c-s.fr,
	paulus@samba.org, rashmica.g@gmail.com, labbott@redhat.com,
	Balbir Singh <bsingharora@gmail.com>
Subject: [PATCH v2 2/9] powerpc/kprobes: Move kprobes over to patch_instruction
Date: Sat,  3 Jun 2017 17:18:36 +1000	[thread overview]
Message-ID: <20170603071843.11966-3-bsingharora@gmail.com> (raw)
In-Reply-To: <20170603071843.11966-1-bsingharora@gmail.com>

arch_arm/disarm_probe use direct assignment for copying
instructions, replace them with patch_instruction

Signed-off-by: Balbir Singh <bsingharora@gmail.com>
---
 arch/powerpc/kernel/kprobes.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/kernel/kprobes.c b/arch/powerpc/kernel/kprobes.c
index fc43435..b49f8f0 100644
--- a/arch/powerpc/kernel/kprobes.c
+++ b/arch/powerpc/kernel/kprobes.c
@@ -158,7 +158,7 @@ NOKPROBE_SYMBOL(arch_prepare_kprobe);
 
 void arch_arm_kprobe(struct kprobe *p)
 {
-	*p->addr = BREAKPOINT_INSTRUCTION;
+	patch_instruction(p->addr, BREAKPOINT_INSTRUCTION);
 	flush_icache_range((unsigned long) p->addr,
 			   (unsigned long) p->addr + sizeof(kprobe_opcode_t));
 }
@@ -166,7 +166,7 @@ NOKPROBE_SYMBOL(arch_arm_kprobe);
 
 void arch_disarm_kprobe(struct kprobe *p)
 {
-	*p->addr = p->opcode;
+	patch_instruction(p->addr, p->opcode);
 	flush_icache_range((unsigned long) p->addr,
 			   (unsigned long) p->addr + sizeof(kprobe_opcode_t));
 }
-- 
2.9.3

  parent reply	other threads:[~2017-06-03  7:19 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-06-03  7:18 [PATCH v2 0/9] Enable STRICT_KERNEL_RWX Balbir Singh
2017-06-03  7:18 ` [PATCH v2 1/9] powerpc/lib/code-patching: Enhance code patching Balbir Singh
2017-06-03 23:45   ` kbuild test robot
2017-06-07 10:25     ` Christophe LEROY
2017-06-07 11:04       ` Balbir Singh
2017-06-07 11:52         ` Michael Ellerman
2017-06-03  7:18 ` Balbir Singh [this message]
2017-06-03  7:18 ` [PATCH v2 3/9] powerpc/kprobes/optprobes: Move over to patch_instruction Balbir Singh
2017-06-03  7:18 ` [PATCH v2 4/9] powerpc/xmon: Add patch_instruction supporf for xmon Balbir Singh
2017-06-03  7:18 ` [PATCH v2 5/9] powerpc/vmlinux.lds: Align __init_begin to 16M Balbir Singh
2017-06-04  4:22   ` Nicholas Piggin
2017-06-04 22:42     ` Balbir Singh
2017-06-05  6:51       ` Nicholas Piggin
2017-06-03  7:18 ` [PATCH v2 6/9] powerpc/platform/pseries/lpar: Fix updatepp and updateboltedpp Balbir Singh
2017-06-03  7:18 ` [PATCH v2 7/9] powerpc/mm/hash: Implement mark_rodata_ro() for hash Balbir Singh
2017-06-03  7:18 ` [PATCH v2 8/9] powerpc/Kconfig: Enable STRICT_KERNEL_RWX Balbir Singh
2017-06-03  7:18 ` [PATCH v2 9/9] powerpc/mm/ptdump: Dump the first entry of the linear mapping as well Balbir Singh

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