From: Oleg Nesterov <oleg@redhat.com>
To: Anton Arapov <anton@redhat.com>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>,
LKML <linux-kernel@vger.kernel.org>,
Josh Stone <jistone@redhat.com>, Frank Eigler <fche@redhat.com>
Subject: Re: [RFC PATCH 5/6] uprobes: add bp_vaddr argument to consumer handler
Date: Sat, 22 Dec 2012 17:35:45 +0100 [thread overview]
Message-ID: <20121222163545.GE18082@redhat.com> (raw)
In-Reply-To: <1356088596-17858-6-git-send-email-anton@redhat.com>
On 12/21, Anton Arapov wrote:
>
> struct uprobe_consumer {
> - int (*handler)(struct uprobe_consumer *self, struct pt_regs *regs);
> + int (*handler)(struct uprobe_consumer *self, unsigned long bp_vaddr, struct pt_regs *regs);
It seems that we can do better...
Just change regs->ip before calling ->handler(). In both cases we are
going to change it again, so ->ip doesn't matter.
Initially I though we can't do this for uretprobes, but it seems we can.
I won't insist though.
Oleg.
next prev parent reply other threads:[~2012-12-22 16:35 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-21 11:16 [RFC PATCH 0/6] uprobes: return probe implementation Anton Arapov
2012-12-21 11:16 ` [RFC PATCH 1/6] uretprobes/x86: hijack return address Anton Arapov
2012-12-22 16:02 ` Oleg Nesterov
2012-12-21 11:16 ` [RFC PATCH 2/6] uretprobes: trampoline implementation Anton Arapov
2012-12-22 16:02 ` Oleg Nesterov
2012-12-21 11:16 ` [RFC PATCH 3/6] uretprobes: return probe entry, prepare uretprobe Anton Arapov
2012-12-22 16:02 ` Oleg Nesterov
2012-12-21 11:16 ` [RFC PATCH 4/6] uretprobes: invoke return probe handlers Anton Arapov
2012-12-22 16:29 ` Oleg Nesterov
2012-12-21 11:16 ` [RFC PATCH 5/6] uprobes: add bp_vaddr argument to consumer handler Anton Arapov
2012-12-22 16:35 ` Oleg Nesterov [this message]
2012-12-22 17:13 ` Oleg Nesterov
2012-12-23 15:49 ` Oleg Nesterov
2013-01-08 14:27 ` Anton Arapov
2013-01-10 22:43 ` Josh Stone
2013-01-12 17:06 ` Oleg Nesterov
2013-01-15 19:15 ` Josh Stone
2013-01-16 16:20 ` Oleg Nesterov
2012-12-21 11:16 ` [RFC PATCH 6/6] uretprobes: register() and unregister() implementation Anton Arapov
2012-12-22 16:38 ` Oleg Nesterov
2012-12-21 17:37 ` [RFC PATCH 0/6] uprobes: return probe implementation Oleg Nesterov
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