From: "H. Peter Anvin" <hpa@zytor.com>
To: Jan Beulich <JBeulich@suse.com>
Cc: mingo@elte.hu, tglx@linutronix.de, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] ix86: improve determination of X86_MINIMUM_CPU_FAMILY
Date: Fri, 07 Sep 2012 08:08:40 -0700 [thread overview]
Message-ID: <504A0DF8.2030009@zytor.com> (raw)
In-Reply-To: <5049BEF70200007800099965@nat28.tlf.novell.com>
On 09/07/2012 12:31 AM, Jan Beulich wrote:
>
> Further, the "6" case is then completely pointless - X86_P6_NOP
> depends on X86_64. And with all features the kernel cares about
> that got added with Pentium and later being CPUID-enumerable,
> the "5" case would then be superfluous too.
>
The dependency X86_64 -> X86_P6_NOP is actually not inherent; it is a
worksaround for a broken version of Microsoft HyperV presenting an
inconsistent ISA to the guest. We could allow enabling X86_P6_NOP on 32
bits, in which family should be 6.
-hpa
--
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel. I don't speak on their behalf.
next prev parent reply other threads:[~2012-09-07 15:08 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-07 6:48 [PATCH] ix86: improve determination of X86_MINIMUM_CPU_FAMILY Jan Beulich
2012-09-07 7:16 ` H. Peter Anvin
2012-09-07 7:31 ` Jan Beulich
2012-09-07 15:08 ` H. Peter Anvin [this message]
2012-09-07 7:36 ` Jan Beulich
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=504A0DF8.2030009@zytor.com \
--to=hpa@zytor.com \
--cc=JBeulich@suse.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@elte.hu \
--cc=tglx@linutronix.de \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.