From: "H. Peter Anvin" <hpa-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>
To: Rusty Russell <rusty-8n+1lVoiYb80n/F98K4Iww@public.gmane.org>
Cc: xen-devel-GuqFBffKawuULHF6PoxzQEEOCMrvLtNR@public.gmane.org,
Jeremy Fitzhardinge <jeremy-TSDbQ3PG+2Y@public.gmane.org>,
lguest-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org,
Thomas Gleixner <tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>,
Ingo Molnar <mingo-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Subject: Re: lguest: unhandled trap 13 and CONFIG_MICROCODE_INTEL_EARLY
Date: Mon, 06 May 2013 07:51:21 -0700 [thread overview]
Message-ID: <5187C369.5020902@zytor.com> (raw)
In-Reply-To: <87li7srb3r.fsf-8n+1lVoiYb80n/F98K4Iww@public.gmane.org>
On 05/05/2013 09:22 PM, Rusty Russell wrote:
>
> HPA, how about we extend the KEEP_SEGMENTS flag to mean "don't touch
> privileged registers" in general? That's what it used to do when it
> was introduced, and AFAIK only lguest uses it. Xen folk CC'd.
>
KEEP_SEGMENTS was introduced at the request of Xen, not lguest. I'm a
bit concerned about extending it as I don't know what else might end up
being affected.
On that subject, I would genuinely like to have a discussion of the
value vs. pain of continuing to support lguest. It has not been a
*huge* problem, especially not compared to Xen, but core
paravirtualization has turned out to be a maintenance nightmare and it
has had an enormous negative impact on development work.
That being said, lguest really hasn't been a huge problem, but partly it
is a "level of support" thing...
-hpa
next prev parent reply other threads:[~2013-05-06 14:51 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1367450300.11532.32.camel@x61.thuisdomein>
[not found] ` <1367450300.11532.32.camel-uMdlDhfIn7prKue/0VVhAg@public.gmane.org>
2013-05-06 4:22 ` lguest: unhandled trap 13 and CONFIG_MICROCODE_INTEL_EARLY Rusty Russell
[not found] ` <87li7srb3r.fsf-8n+1lVoiYb80n/F98K4Iww@public.gmane.org>
2013-05-06 14:51 ` H. Peter Anvin [this message]
[not found] ` <5187C369.5020902-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>
2013-05-07 5:18 ` Rusty Russell
2013-05-08 17:20 ` [Lguest] " Konrad Rzeszutek Wilk
[not found] ` <20130508172040.GA1256-6K5HmflnPlqSPmnEAIUT9EEOCMrvLtNR@public.gmane.org>
2013-05-08 18:07 ` [Xen-devel] " H. Peter Anvin
2013-05-10 14:51 ` Is: paravirt docs and diet. Was:Re: [Lguest] " Konrad Rzeszutek Wilk
[not found] ` <20130510145137.GJ19520-6K5HmflnPlqSPmnEAIUT9EEOCMrvLtNR@public.gmane.org>
2013-05-10 17:19 ` Is: paravirt docs and diet. Was:Re: [Xen-devel] " H. Peter Anvin
2013-05-10 17:53 ` Is: paravirt docs and diet. Was:Re: [Lguest] " Matt Wilson
[not found] ` <20130510175326.GD10713-reOQivfqS6pSvVcqp95Imk58d5RJRbtSwVDGBwiNqrNWk0Htik3J/w@public.gmane.org>
2013-05-10 18:07 ` [Xen-devel] Is: paravirt docs and diet. Was:Re: " H. Peter Anvin
2013-05-13 20:11 ` Is: paravirt docs and diet. Was:Re: [Lguest] " Konrad Rzeszutek Wilk
2013-05-09 1:43 ` [Xen-devel] " Rusty Russell
[not found] ` <8738txnd13.fsf-8n+1lVoiYb80n/F98K4Iww@public.gmane.org>
2013-05-09 3:24 ` H. Peter Anvin
[not found] ` <518B1702.7010307-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>
2013-05-09 8:24 ` Paul Bolle
[not found] ` <87mws7nzag.fsf-8n+1lVoiYb80n/F98K4Iww@public.gmane.org>
2013-05-09 2:50 ` H. Peter Anvin
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