From: linux@arm.linux.org.uk (Russell King - ARM Linux)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v5 1/3] ARM: probes: check stack operation when decoding
Date: Thu, 28 Aug 2014 11:20:21 +0100 [thread overview]
Message-ID: <20140828102021.GC30401@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <53FEFB93.2010009@hitachi.com>
On Thu, Aug 28, 2014 at 06:51:15PM +0900, Masami Hiramatsu wrote:
> (2014/08/27 22:02), Wang Nan wrote:
> > This patch improves arm instruction decoder, allows it check whether an
> > instruction is a stack store operation. This information is important
> > for kprobe optimization.
> >
> > For normal str instruction, this patch add a series of _SP_STACK
> > register indicator in the decoder to test the base and offset register
> > in ldr <Rt>, [<Rn>, <Rm>] against sp.
> >
> > For stm instruction, it check sp register in instruction specific
> > decoder.
>
> OK, reviewed. but since I'm not so sure about arm32 ISA,
> I need help from ARM32 maintainer to ack this.
What you actually need is an ack from the ARM kprobes people who
understand this code. That would be much more meaningful than my
ack. They're already on the Cc list.
--
FTTC broadband for 0.8mile line: currently at 9.5Mbps down 400kbps up
according to speedtest.net.
next prev parent reply other threads:[~2014-08-28 10:20 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-27 13:02 [PATCH v5 0/3] kprobes: arm: enable OPTPROBES for ARM 32 Wang Nan
2014-08-27 13:02 ` [PATCH v5 1/3] ARM: probes: check stack operation when decoding Wang Nan
2014-08-28 9:51 ` Masami Hiramatsu
2014-08-28 10:20 ` Russell King - ARM Linux [this message]
2014-08-28 10:24 ` Will Deacon
2014-08-29 8:47 ` Jon Medhurst (Tixy)
2014-08-30 1:28 ` Wang Nan
2014-09-01 17:29 ` Jon Medhurst (Tixy)
2014-08-27 13:02 ` [PATCH v5 2/3] kprobes: copy ainsn after alloc aggr kprobe Wang Nan
2014-08-28 9:39 ` Masami Hiramatsu
2014-08-28 11:07 ` Wang Nan
2014-08-27 13:02 ` [PATCH v5 3/3] kprobes: arm: enable OPTPROBES for ARM 32 Wang Nan
2014-08-28 10:20 ` Masami Hiramatsu
2014-09-02 13:49 ` Jon Medhurst (Tixy)
2014-09-03 10:18 ` Masami Hiramatsu
2014-09-03 10:30 ` Will Deacon
2014-09-04 10:40 ` Jon Medhurst (Tixy)
2014-09-04 10:52 ` Will Deacon
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