From: Masami Hiramatsu <mhiramat@kernel.org>
To: "Naveen N. Rao" <naveen.n.rao@linux.vnet.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>,
Ingo Molnar <mingo@kernel.org>,
Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>,
Masami Hiramatsu <mhiramat@kernel.org>,
linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 7/7] powerpc: kprobes: remove duplicate saving of msr
Date: Wed, 19 Apr 2017 23:43:38 +0900 [thread overview]
Message-ID: <20170419234338.24997b39e18506f07e4897bf@kernel.org> (raw)
In-Reply-To: <bdf0464c4b7f0d4aa0099d3e60ebeb63ba4b07d1.1492604782.git.naveen.n.rao@linux.vnet.ibm.com>
On Wed, 19 Apr 2017 18:21:06 +0530
"Naveen N. Rao" <naveen.n.rao@linux.vnet.ibm.com> wrote:
> set_current_kprobe() already saves regs->msr into kprobe_saved_msr. Remove
> the redundant save.
>
Looks good to me.
Reviewed-by: Masami Hiramatsu <mhiramat@kernel.org>
Thank you,
> Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
> ---
> arch/powerpc/kernel/kprobes.c | 1 -
> 1 file changed, 1 deletion(-)
>
> diff --git a/arch/powerpc/kernel/kprobes.c b/arch/powerpc/kernel/kprobes.c
> index 067e9863bfdf..5c0a1ffcbcf9 100644
> --- a/arch/powerpc/kernel/kprobes.c
> +++ b/arch/powerpc/kernel/kprobes.c
> @@ -272,7 +272,6 @@ int __kprobes kprobe_handler(struct pt_regs *regs)
> */
> save_previous_kprobe(kcb);
> set_current_kprobe(p, regs, kcb);
> - kcb->kprobe_saved_msr = regs->msr;
> kprobes_inc_nmissed_count(p);
> prepare_singlestep(p, regs);
> kcb->kprobe_status = KPROBE_REENTER;
> --
> 2.12.1
>
--
Masami Hiramatsu <mhiramat@kernel.org>
next prev parent reply other threads:[~2017-04-19 14:43 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-19 12:50 [PATCH v3 0/7] powerpc: a few kprobe fixes and refactoring Naveen N. Rao
2017-04-19 12:51 ` [PATCH v3 1/7] kprobes: convert kprobe_lookup_name() to a function Naveen N. Rao
2017-04-24 22:47 ` [v3,1/7] " Michael Ellerman
2017-04-19 12:51 ` [PATCH v3 2/7] powerpc: kprobes: fix handling of function offsets on ABIv2 Naveen N. Rao
2017-04-24 22:47 ` [v3,2/7] " Michael Ellerman
2017-04-19 12:51 ` [PATCH v3 3/7] kprobes: validate the symbol name length Naveen N. Rao
2017-04-19 14:37 ` Masami Hiramatsu
2017-04-19 16:38 ` Naveen N. Rao
2017-04-21 13:42 ` Masami Hiramatsu
2017-04-23 15:44 ` Naveen N. Rao
2017-04-25 3:18 ` Masami Hiramatsu
2017-04-20 6:08 ` Michael Ellerman
2017-04-20 7:19 ` Naveen N. Rao
2017-04-21 12:32 ` [PATCH v4 3/7] kprobes: validate the symbol name provided during probe registration Naveen N. Rao
2017-04-21 13:11 ` Paul Clarke
2017-04-21 13:25 ` Naveen N. Rao
2017-04-21 13:54 ` Masami Hiramatsu
2017-04-22 5:55 ` Michael Ellerman
2017-04-23 17:41 ` Naveen N. Rao
2017-04-21 12:33 ` [PATCH v4 4/7] powerpc/kprobes: Use safer string functions in kprobe_lookup_name() Naveen N. Rao
2017-04-21 13:33 ` Paul Clarke
2017-04-21 13:36 ` Paul Clarke
2017-04-21 13:52 ` Paul Clarke
2017-04-23 17:09 ` Naveen N. Rao
2017-04-19 12:51 ` [PATCH v3 4/7] powerpc: kprobes: use " Naveen N. Rao
2017-04-21 15:06 ` David Laight
2017-04-19 12:51 ` [PATCH v3 5/7] powerpc: kprobes: factor out code to emulate instruction into a helper Naveen N. Rao
2017-04-19 14:40 ` Masami Hiramatsu
2017-04-24 22:47 ` [v3, " Michael Ellerman
2017-04-19 12:51 ` [PATCH v3 6/7] powerpc: kprobes: emulate instructions on kprobe handler re-entry Naveen N. Rao
2017-04-19 14:43 ` Masami Hiramatsu
2017-04-19 16:42 ` Naveen N. Rao
2017-04-20 6:11 ` Michael Ellerman
2017-04-21 13:48 ` Masami Hiramatsu
2017-04-24 22:47 ` [v3, " Michael Ellerman
2017-04-19 12:51 ` [PATCH v3 7/7] powerpc: kprobes: remove duplicate saving of msr Naveen N. Rao
2017-04-19 14:43 ` Masami Hiramatsu [this message]
2017-04-23 11:53 ` [v3,7/7] " Michael Ellerman
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