From: Jeremy Fitzhardinge <jeremy@goop.org>
To: Zachary Amsden <zach@vmware.com>
Cc: Andi Kleen <ak@suse.de>,
Virtualization Mailing List <virtualization@lists.osdl.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: Why disable vdso by default with CONFIG_PARAVIRT?
Date: Mon, 11 Dec 2006 17:44:28 -0800 [thread overview]
Message-ID: <457E097C.5030208@goop.org> (raw)
In-Reply-To: <457E08FE.6050600@vmware.com>
Zachary Amsden wrote:
> Jeremy Fitzhardinge wrote:
>> Hi Andi,
>>
>> What problem do they cause together? There's certainly no problem with
>> Xen+vdso (in fact, its actually very useful so that it picks up the
>> right libc with Xen-friendly TLS).
>>
>
> Methinks the compat VDSO support got broken in the config? Paravirt +
> COMPAT_VDSO are incompatible.
Yes, that's true, but I'm looking at arch/i386/kernel/sysenter.c:
#ifdef CONFIG_PARAVIRT
unsigned int __read_mostly vdso_enabled = 0;
#else
unsigned int __read_mostly vdso_enabled = 1;
#endif
I can't think of any reason why that should be necessary.
J
next prev parent reply other threads:[~2006-12-12 1:44 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-12-12 1:22 Why disable vdso by default with CONFIG_PARAVIRT? Jeremy Fitzhardinge
2006-12-12 1:42 ` Zachary Amsden
2006-12-12 1:44 ` Jeremy Fitzhardinge [this message]
2006-12-12 1:46 ` Zachary Amsden
2006-12-12 1:49 ` Jeremy Fitzhardinge
2006-12-12 3:02 ` Andi Kleen
2006-12-12 6:28 ` Zachary Amsden
2006-12-12 6:50 ` Jeremy Fitzhardinge
2006-12-12 7:27 ` Andi Kleen
2006-12-12 10:23 ` Jeremy Fitzhardinge
2006-12-12 12:01 ` Andi Kleen
2006-12-12 20:11 ` Jeremy Fitzhardinge
2006-12-12 21:15 ` Andi Kleen
2006-12-13 2:04 ` Rusty Russell
2006-12-13 4:36 ` Rusty Russell
2006-12-13 5:25 ` Rusty Russell
2006-12-12 23:22 ` Rusty Russell
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=457E097C.5030208@goop.org \
--to=jeremy@goop.org \
--cc=ak@suse.de \
--cc=linux-kernel@vger.kernel.org \
--cc=virtualization@lists.osdl.org \
--cc=zach@vmware.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).