From: Jiri Slaby <jslaby@suse.cz>
To: Josh Poimboeuf <jpoimboe@redhat.com>, Miroslav Benes <mbenes@suse.cz>
Cc: Jiri Kosina <jikos@kernel.org>, Jessica Yu <jeyu@redhat.com>,
linux-kernel@vger.kernel.org, live-patching@vger.kernel.org,
Vojtech Pavlik <vojtech@suse.com>
Subject: Re: [RFC PATCH v1.9 07/14] x86/stacktrace: add function for detecting reliable stack traces
Date: Mon, 11 Apr 2016 16:16:14 +0200 [thread overview]
Message-ID: <570BB1AE.6090502@suse.cz> (raw)
In-Reply-To: <20160404175437.gjj2ghphzv5foh4j@treble.redhat.com>
[-- Attachment #1.1: Type: text/plain, Size: 1426 bytes --]
On 04/04/2016, 07:54 PM, Josh Poimboeuf wrote:
> On Thu, Mar 31, 2016 at 03:03:16PM +0200, Miroslav Benes wrote:
>> On Fri, 25 Mar 2016, Josh Poimboeuf wrote:
>>
>>> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
>>> index 2dc18605..76274b8 100644
>>> --- a/arch/x86/Kconfig
>>> +++ b/arch/x86/Kconfig
>>> @@ -138,6 +138,7 @@ config X86
>>> select HAVE_PERF_REGS
>>> select HAVE_PERF_USER_STACK_DUMP
>>> select HAVE_REGS_AND_STACK_ACCESS_API
>>> + select HAVE_RELIABLE_STACKTRACE if X86_64 && FRAME_POINTER
>>
>> I understand we have to rely on frame pointer for now. Do you plan to
>> switch to dwarf unwinder one day in the future? IOW is there a plan to
>> implement dwarf stuff generation in objtool and then to have a dwarf-based
>> stack unwinder upstream and to use it for live patching?
>
> Yes, adding DWARF validation and generation to objtool and creating a
> DWARF unwinder upstream are all planned, hopefully soon.
I may seem to be obtrusive, but here, I would like to offer my help
again. If you need any kind of help with the unwinder, I can definitely
help with that. Be it coding, testing, ideas discussion or anything else.
We had been using unwinder for over a decade in SUSE but it stopped
working for assembly recently (for obvious reasons). So having a working
and reliable unwinder again is one of the top priorities for us.
thanks,
--
js
suse labs
[-- Attachment #2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 819 bytes --]
next prev parent reply other threads:[~2016-04-11 14:16 UTC|newest]
Thread overview: 89+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-25 19:34 [RFC PATCH v1.9 00/14] livepatch: hybrid consistency model Josh Poimboeuf
2016-03-25 19:34 ` [RFC PATCH v1.9 01/14] x86/asm/head: cleanup initial stack variable Josh Poimboeuf
2016-03-25 19:34 ` [RFC PATCH v1.9 02/14] x86/asm/head: use a common function for starting CPUs Josh Poimboeuf
2016-03-25 19:34 ` [RFC PATCH v1.9 03/14] x86/asm/head: standardize the bottom of the stack for idle tasks Josh Poimboeuf
2016-03-25 19:34 ` [RFC PATCH v1.9 04/14] x86: move _stext marker before head code Josh Poimboeuf
2016-03-25 19:34 ` [RFC PATCH v1.9 05/14] sched: horrible way to detect whether a task has been preempted Josh Poimboeuf
2016-04-06 13:06 ` Petr Mladek
2016-04-06 16:33 ` Josh Poimboeuf
2016-04-07 9:47 ` Petr Mladek
2016-04-07 14:34 ` Josh Poimboeuf
2016-04-08 8:07 ` Petr Mladek
2016-04-08 14:34 ` Josh Poimboeuf
2016-04-07 21:15 ` Jessica Yu
2016-04-07 21:37 ` Jiri Kosina
2016-04-07 22:35 ` Josh Poimboeuf
2016-04-07 22:53 ` Jiri Kosina
2016-04-07 23:15 ` Jessica Yu
2016-04-08 7:05 ` Jiri Kosina
2016-04-08 8:03 ` Petr Mladek
2016-04-08 14:31 ` Josh Poimboeuf
2016-04-11 8:38 ` Petr Mladek
2016-03-25 19:34 ` [RFC PATCH v1.9 06/14] x86: add error handling to dump_trace() Josh Poimboeuf
2016-03-25 19:34 ` [RFC PATCH v1.9 07/14] x86/stacktrace: add function for detecting reliable stack traces Josh Poimboeuf
2016-03-31 13:03 ` Miroslav Benes
2016-04-04 17:54 ` Josh Poimboeuf
2016-04-11 14:16 ` Jiri Slaby [this message]
2016-04-12 15:56 ` Josh Poimboeuf
2016-06-09 8:31 ` Jiri Slaby
2016-06-13 21:58 ` Josh Poimboeuf
2016-12-01 20:28 ` Jiri Slaby
2016-12-01 20:59 ` Josh Poimboeuf
2017-01-17 13:08 ` Jiri Slaby
2016-04-04 15:55 ` Petr Mladek
2016-04-04 17:58 ` Josh Poimboeuf
2016-04-07 11:55 ` Petr Mladek
2016-04-07 14:46 ` Josh Poimboeuf
2016-04-08 8:24 ` Petr Mladek
2016-04-11 3:29 ` Jessica Yu
2016-03-25 19:34 ` [RFC PATCH v1.9 08/14] livepatch: separate enabled and patched states Josh Poimboeuf
2016-04-11 3:31 ` Jessica Yu
2016-04-12 14:44 ` [RFC PATCH v1.9 08/14] " Chris J Arges
2016-04-12 17:16 ` Josh Poimboeuf
2016-04-12 17:35 ` Chris J Arges
2016-04-12 18:25 ` Josh Poimboeuf
2016-03-25 19:34 ` [RFC PATCH v1.9 09/14] livepatch: remove unnecessary object loaded check Josh Poimboeuf
2016-03-25 19:34 ` [RFC PATCH v1.9 10/14] livepatch: move patching functions into patch.c Josh Poimboeuf
2016-03-25 19:34 ` [RFC PATCH v1.9 11/14] livepatch: store function sizes Josh Poimboeuf
2016-03-25 19:34 ` [RFC PATCH v1.9 12/14] livepatch: create per-task consistency model Josh Poimboeuf
2016-03-31 13:12 ` Miroslav Benes
2016-04-04 18:21 ` Josh Poimboeuf
2016-04-04 18:27 ` Vojtech Pavlik
2016-04-04 18:33 ` Josh Poimboeuf
2016-04-05 11:36 ` Vojtech Pavlik
2016-04-05 13:53 ` Josh Poimboeuf
2016-04-05 17:32 ` Minfei Huang
2016-04-05 21:17 ` Josh Poimboeuf
2016-04-14 9:25 ` Miroslav Benes
2016-04-14 16:39 ` Josh Poimboeuf
2016-04-15 9:17 ` Miroslav Benes
2016-03-25 19:35 ` [RFC PATCH v1.9 13/14] livepatch: add /proc/<pid>/patch_status Josh Poimboeuf
2016-03-31 9:33 ` Jiri Slaby
2016-03-31 9:40 ` Jiri Slaby
2016-04-04 16:56 ` Josh Poimboeuf
2016-03-25 19:35 ` [RFC PATCH v1.9 14/14] livepatch: update task universe when exiting kernel Josh Poimboeuf
2016-04-14 8:47 ` Miroslav Benes
2016-04-14 8:50 ` Miroslav Benes
2016-04-14 13:39 ` Josh Poimboeuf
2016-04-18 15:01 ` [RFC PATCH 0/2] s390/klp: s390 support Miroslav Benes
2016-04-18 15:01 ` [RFC PATCH 1/2] s390: livepatch, reorganize TIF bits Miroslav Benes
2016-04-18 15:01 ` [RFC PATCH 2/2] s390/klp: update task universe when exiting kernel Miroslav Benes
2016-04-18 15:17 ` [RFC PATCH 0/2] s390/klp: s390 support Josh Poimboeuf
2016-04-14 13:23 ` [RFC PATCH v1.9 14/14] livepatch: update task universe when exiting kernel Josh Poimboeuf
2016-03-31 12:54 ` [RFC PATCH v1.9 00/14] livepatch: hybrid consistency model Miroslav Benes
2016-04-04 17:03 ` Josh Poimboeuf
2016-04-05 14:24 ` Miroslav Benes
2016-04-05 14:34 ` Josh Poimboeuf
2016-04-05 14:53 ` Miroslav Benes
2016-04-01 13:34 ` Miroslav Benes
2016-04-01 13:39 ` Petr Mladek
2016-04-01 15:38 ` Petr Mladek
2016-04-05 13:44 ` Josh Poimboeuf
2016-04-06 8:15 ` Petr Mladek
2016-04-28 18:53 ` Josh Poimboeuf
2016-06-09 14:20 ` Petr Mladek
2016-04-07 12:10 ` Petr Mladek
2016-04-07 15:08 ` Josh Poimboeuf
2016-04-07 15:47 ` Jiri Kosina
2016-04-07 18:03 ` Josh Poimboeuf
2016-04-07 18:33 ` Jiri Kosina
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=570BB1AE.6090502@suse.cz \
--to=jslaby@suse.cz \
--cc=jeyu@redhat.com \
--cc=jikos@kernel.org \
--cc=jpoimboe@redhat.com \
--cc=linux-kernel@vger.kernel.org \
--cc=live-patching@vger.kernel.org \
--cc=mbenes@suse.cz \
--cc=vojtech@suse.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).