From: "H. Peter Anvin" <hpa@zytor.com>
To: Jan Beulich <JBeulich@suse.com>
Cc: Borislav Petkov <bp@alien8.de>,
Andre Przywara <andre.przywara@amd.com>,
Jacob Shin <Jacob.Shin@amd.com>,
mingo@elte.hu, jeremy@goop.org, tglx@linutronix.de,
xen-devel@lists.xensource.com,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
linux-kernel@vger.kernel.org
Subject: Re: [Xen-devel] [PATCH] x86/amd: fix crash as Xen Dom0 on AMD Trinity systems
Date: Wed, 30 May 2012 08:45:57 -0700 [thread overview]
Message-ID: <4FC640B5.2080601@zytor.com> (raw)
In-Reply-To: <4FC65B950200007800086F5B@nat28.tlf.novell.com>
On 05/30/2012 08:40 AM, Jan Beulich wrote:
>>>> On 30.05.12 at 17:12, Borislav Petkov <bp@alien8.de> wrote:
>> This current case should be a perfect example for why xen shouldn't be
>> sprinkling code all over the place.
>
> Which means you're denying the benefits of para-virtualization
> (at the base system level; perhaps it's less of a problem for you
> when it comes to pv device drivers, which are generally
> standalone entities) as that's what distinguishes Xen from all
> other virtualization solutions Linux supports.
>
And it also denies the just atrocious cost of Xen grabbing random kernel
internals and turning them into ABIs that we have to work around from
that point on. This is particularly obnoxious because the cost is
largely not borne by the Xen community but by the general Linux development.
-hpa
next prev parent reply other threads:[~2012-05-30 15:45 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-30 13:10 [PATCH] x86/amd: fix crash as Xen Dom0 on AMD Trinity systems Andre Przywara
2012-05-30 13:33 ` Jan Beulich
2012-05-30 14:02 ` Andre Przywara
2012-05-30 14:23 ` Jan Beulich
2012-05-30 14:42 ` [Xen-devel] " H. Peter Anvin
2012-05-30 14:49 ` Konrad Rzeszutek Wilk
2012-05-30 15:12 ` Borislav Petkov
2012-05-30 15:40 ` Jan Beulich
2012-05-30 15:45 ` H. Peter Anvin [this message]
2012-05-30 15:58 ` Borislav Petkov
2012-05-30 14:48 ` Jacob Shin
2012-05-30 14:50 ` Konrad Rzeszutek Wilk
2012-05-30 15:03 ` Jacob Shin
2012-05-30 17:17 ` Konrad Rzeszutek Wilk
2012-05-30 17:31 ` H. Peter Anvin
2012-05-30 22:23 ` Konrad Rzeszutek Wilk
2012-05-30 17:32 ` Borislav Petkov
2012-05-30 17:47 ` [PATCH] x86, AMD: Fix " Borislav Petkov
2012-05-30 17:47 ` [Xen-devel] [PATCH] x86/amd: fix " H. Peter Anvin
2012-05-30 17:51 ` Borislav Petkov
2012-05-30 18:00 ` H. Peter Anvin
2012-05-30 18:17 ` Borislav Petkov
2012-05-30 18:19 ` Borislav Petkov
2012-05-30 18:21 ` H. Peter Anvin
2012-05-30 18:29 ` Borislav Petkov
2012-05-30 18:20 ` H. Peter Anvin
2012-05-30 22:33 ` Konrad Rzeszutek Wilk
2012-05-30 23:09 ` H. Peter Anvin
2012-06-06 9:27 ` Ingo Molnar
2012-06-06 9:42 ` Borislav Petkov
2012-06-06 9:45 ` Ingo Molnar
2012-05-31 12:24 ` Andre Przywara
2012-05-31 15:27 ` [Xen-devel] " Konrad Rzeszutek Wilk
2012-05-31 7:39 ` Jan Beulich
2012-05-31 16:55 ` Borislav Petkov
2012-05-31 7:17 ` Jan Beulich
2012-05-31 15:59 ` H. Peter Anvin
2012-05-30 14:39 ` Konrad Rzeszutek Wilk
2012-05-30 14:50 ` H. Peter Anvin
2012-05-30 14:51 ` Konrad Rzeszutek Wilk
2012-05-30 15:08 ` Jan Beulich
2012-05-30 15:15 ` H. Peter Anvin
2012-05-30 15:35 ` Jan Beulich
2012-05-30 16:48 ` Konrad Rzeszutek Wilk
2012-05-30 14:42 ` H. Peter Anvin
2012-05-30 14:55 ` Borislav Petkov
2012-05-30 14:58 ` H. Peter Anvin
2012-05-30 15:00 ` Borislav Petkov
2012-05-30 15:01 ` H. Peter Anvin
2012-05-30 15:05 ` Borislav Petkov
2012-05-30 23:31 ` H. Peter Anvin
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