From: Peter Zijlstra <peterz@infradead.org>
To: Avi Kivity <avi@redhat.com>
Cc: ananth@in.ibm.com, Jim Keniston <jkenisto@us.ibm.com>,
Srikar Dronamraju <srikar@linux.vnet.ibm.com>,
Ingo Molnar <mingo@elte.hu>,
Arnaldo Carvalho de Melo <acme@infradead.org>,
utrace-devel <utrace-devel@redhat.com>,
Frederic Weisbecker <fweisbec@gmail.com>,
Masami Hiramatsu <mhiramat@redhat.com>,
Maneesh Soni <maneesh@in.ibm.com>, Mark Wielaard <mjw@redhat.com>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [RFC] [PATCH 1/7] User Space Breakpoint Assistance Layer (UBP)
Date: Mon, 18 Jan 2010 12:44:32 +0100 [thread overview]
Message-ID: <1263815072.4283.305.camel@laptop> (raw)
In-Reply-To: <4B543F93.3060509@redhat.com>
On Mon, 2010-01-18 at 13:01 +0200, Avi Kivity wrote:
>
> You've made it clear that you don't like it, but not why.
>
> The kernel already manages the user's address space (except for
> MAP_FIXED which is unreliable unless you've already reserved the address
> space). I don't see why adding a vma for debugging is so horrible.
Well, the kernel only does what the user (and loader) tell it through
mmap(). Other than that we never (except this VDSO thing) inject vmas,
and I see no reason to start doing that now.
next prev parent reply other threads:[~2010-01-18 11:45 UTC|newest]
Thread overview: 163+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-11 12:25 [RFC] [PATCH 0/7] UBP, XOL and Uprobes Srikar Dronamraju
2010-01-11 12:25 ` [RFC] [PATCH 1/7] User Space Breakpoint Assistance Layer (UBP) Srikar Dronamraju
2010-01-14 11:08 ` Peter Zijlstra
2010-01-14 19:46 ` Jim Keniston
2010-01-15 9:02 ` Peter Zijlstra
2010-01-15 21:07 ` Jim Keniston
2010-01-15 21:49 ` Peter Zijlstra
2010-01-16 0:58 ` Jim Keniston
2010-01-16 10:33 ` Peter Zijlstra
2010-01-17 0:12 ` Bryan Donlan
2010-01-18 7:37 ` Peter Zijlstra
2010-01-17 14:37 ` Avi Kivity
2010-01-15 9:03 ` Peter Zijlstra
2010-01-15 9:38 ` Ananth N Mavinakayanahalli
2010-01-15 9:50 ` Peter Zijlstra
2010-01-15 10:10 ` Ananth N Mavinakayanahalli
2010-01-15 10:13 ` Peter Zijlstra
2010-01-15 10:22 ` Ananth N Mavinakayanahalli
2010-01-15 10:56 ` Peter Zijlstra
2010-01-15 11:02 ` Peter Zijlstra
2010-01-15 21:19 ` Jim Keniston
2010-01-17 14:39 ` Avi Kivity
2010-01-17 14:52 ` Peter Zijlstra
2010-01-17 14:56 ` Avi Kivity
2010-01-17 15:01 ` Peter Zijlstra
2010-01-20 12:55 ` Pavel Machek
2010-01-17 14:59 ` Avi Kivity
2010-01-17 15:03 ` Peter Zijlstra
2010-01-17 19:33 ` Avi Kivity
2010-01-18 7:45 ` Peter Zijlstra
2010-01-18 11:01 ` Avi Kivity
2010-01-18 11:44 ` Peter Zijlstra [this message]
2010-01-18 12:01 ` Avi Kivity
2010-01-18 12:06 ` Peter Zijlstra
2010-01-18 12:09 ` Avi Kivity
2010-01-18 12:13 ` Pekka Enberg
2010-01-18 12:17 ` Avi Kivity
2010-01-18 12:24 ` Peter Zijlstra
2010-01-18 12:24 ` Pekka Enberg
2010-01-18 12:44 ` Srikar Dronamraju
2010-01-18 12:51 ` Pekka Enberg
2010-01-18 12:53 ` Avi Kivity
2010-01-18 12:57 ` Pekka Enberg
2010-01-18 13:06 ` Avi Kivity
2010-01-18 22:15 ` Jim Keniston
2010-01-19 8:07 ` Avi Kivity
2010-01-19 17:47 ` Jim Keniston
2010-01-19 18:06 ` Frederic Weisbecker
2010-01-20 6:36 ` Srikar Dronamraju
2010-01-20 10:51 ` Frederic Weisbecker
2010-01-20 19:31 ` Masami Hiramatsu
2010-01-20 9:43 ` Avi Kivity
2010-01-20 9:57 ` Peter Zijlstra
2010-01-20 12:22 ` Avi Kivity
2010-01-27 8:24 ` Ingo Molnar
2010-01-27 8:35 ` Avi Kivity
2010-01-27 9:08 ` Ingo Molnar
2010-01-27 9:25 ` Avi Kivity
2010-01-27 10:23 ` Ingo Molnar
2010-02-07 13:47 ` Avi Kivity
2010-01-20 10:45 ` Srikar Dronamraju
2010-01-20 12:23 ` Avi Kivity
2010-01-20 18:31 ` Andi Kleen
2010-01-20 19:34 ` Jim Keniston
2010-01-20 19:58 ` Andi Kleen
2010-01-20 20:28 ` Jim Keniston
2010-01-18 13:05 ` Peter Zijlstra
2010-01-18 13:34 ` Mark Wielaard
2010-01-18 19:49 ` Jim Keniston
2010-01-18 15:43 ` Ananth N Mavinakayanahalli
2010-01-18 16:52 ` Avi Kivity
2010-01-18 17:10 ` Ananth N Mavinakayanahalli
2010-01-18 12:14 ` Peter Zijlstra
2010-01-18 12:37 ` Avi Kivity
2010-01-18 13:15 ` Peter Zijlstra
2010-01-18 13:33 ` Avi Kivity
2010-01-18 13:34 ` K.Prasad
2010-01-20 15:57 ` Mel Gorman
2010-01-20 18:32 ` Andi Kleen
2010-01-18 11:45 ` Peter Zijlstra
2010-01-11 12:25 ` [RFC] [PATCH 2/7] x86 support for UBP Srikar Dronamraju
2010-01-11 12:25 ` [RFC] [PATCH 3/7] Execution out of line (XOL) Srikar Dronamraju
2010-01-14 11:08 ` Peter Zijlstra
2010-01-14 22:43 ` Jim Keniston
2010-01-15 9:07 ` Peter Zijlstra
2010-01-15 11:12 ` Srikar Dronamraju
2010-01-15 20:18 ` Jim Keniston
2010-01-11 12:25 ` [RFC] [PATCH 4/7] Uprobes Implementation Srikar Dronamraju
2010-01-12 2:01 ` Paul E. McKenney
2010-01-12 8:21 ` Srikar Dronamraju
2010-01-12 5:36 ` Frederic Weisbecker
2010-01-12 8:14 ` Ananth N Mavinakayanahalli
2010-01-13 0:53 ` Jim Keniston
2010-01-14 11:12 ` Peter Zijlstra
2010-01-12 8:54 ` Srikar Dronamraju
2010-01-14 11:09 ` Peter Zijlstra
2010-01-14 22:49 ` Jim Keniston
2010-01-15 9:10 ` Peter Zijlstra
2010-01-15 9:26 ` Frank Ch. Eigler
2010-01-15 9:35 ` Peter Zijlstra
2010-01-15 13:10 ` Frank Ch. Eigler
2010-01-15 13:25 ` Peter Zijlstra
2010-01-15 13:38 ` Frank Ch. Eigler
2010-01-15 13:47 ` Peter Zijlstra
2010-01-15 14:00 ` Frank Ch. Eigler
2010-01-15 14:06 ` Peter Zijlstra
2010-01-15 14:22 ` Frank Ch. Eigler
2010-01-15 14:40 ` Peter Zijlstra
2010-01-15 14:20 ` Srikar Dronamraju
2010-01-15 14:25 ` Peter Zijlstra
2010-01-15 23:11 ` Jim Keniston
2010-01-16 15:50 ` Frank Ch. Eigler
2010-01-15 10:26 ` Srikar Dronamraju
2010-01-15 10:33 ` Peter Zijlstra
2010-01-15 11:05 ` Maneesh Soni
2010-01-15 11:12 ` Peter Zijlstra
2010-01-15 11:18 ` Peter Zijlstra
2010-01-15 22:27 ` Jim Keniston
2010-01-15 23:44 ` Jim Keniston
2010-01-16 10:04 ` Peter Zijlstra
2010-01-15 13:08 ` Srikar Dronamraju
2010-01-15 13:16 ` Peter Zijlstra
2010-01-15 13:38 ` Peter Zijlstra
2010-01-11 12:25 ` [RFC] [PATCH 5/7] X86 Support for Uprobes Srikar Dronamraju
2010-01-14 11:13 ` Peter Zijlstra
2010-01-14 23:07 ` Jim Keniston
2010-01-11 12:26 ` [RFC] [PATCH 6/7] Uprobes Documentation Srikar Dronamraju
2010-01-11 12:26 ` [RFC] [PATCH 7/7] Ftrace plugin for Uprobes Srikar Dronamraju
2010-01-12 4:54 ` Frederic Weisbecker
2010-01-12 5:08 ` Steven Rostedt
2010-01-12 5:44 ` Frederic Weisbecker
2010-01-12 19:12 ` Tim Bird
2010-01-13 21:58 ` Masami Hiramatsu
2010-01-13 22:12 ` Masami Hiramatsu
2010-01-13 23:36 ` Steven Rostedt
2010-01-12 18:54 ` Frank Ch. Eigler
2010-01-12 22:00 ` Masami Hiramatsu
2010-01-12 22:15 ` Frank Ch. Eigler
2010-01-12 22:30 ` Masami Hiramatsu
2010-01-14 11:23 ` Peter Zijlstra
2010-01-14 11:29 ` Peter Zijlstra
2010-01-14 12:16 ` Mark Wielaard
2010-01-14 12:19 ` Peter Zijlstra
2010-01-14 11:35 ` Frederic Weisbecker
2010-01-14 11:43 ` Peter Zijlstra
2010-01-14 12:23 ` Frederic Weisbecker
2010-01-14 12:29 ` Peter Zijlstra
2010-01-18 13:00 ` Frederic Weisbecker
2010-01-11 14:35 ` [RFC] [PATCH 0/7] UBP, XOL and Uprobes Masami Hiramatsu
2010-01-11 22:59 ` Jim Keniston
2010-01-22 7:02 ` [RFC] [PATCH 0/7] UBP, XOL and Uprobes [ Summary of Comments and actions to be taken ] Srikar Dronamraju
2010-01-22 7:24 ` Ananth N Mavinakayanahalli
2010-01-22 10:47 ` Peter Zijlstra
2010-01-27 6:53 ` Peter Zijlstra
2010-01-27 8:24 ` Peter Zijlstra
2010-01-22 18:06 ` Peter Zijlstra
2010-01-22 18:36 ` Masami Hiramatsu
2010-01-22 23:55 ` Jim Keniston
2010-01-16 23:48 [RFC] [PATCH 1/7] User Space Breakpoint Assistance Layer (UBP) Jim Keniston
2010-01-18 7:23 ` Peter Zijlstra
2010-01-18 15:58 ` Masami Hiramatsu
2010-01-18 19:21 ` Jim Keniston
2010-01-18 21:20 ` Masami Hiramatsu
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