From: Amit Shah <amit.shah@redhat.com>
To: Avi Kivity <avi@redhat.com>
Cc: kvm@vger.kernel.org
Subject: Re: [PATCH] KVM: x86: Store multiple cpuid entries for a single function
Date: Tue, 13 Jan 2009 15:10:22 +0530 [thread overview]
Message-ID: <20090113094022.GB22533@amit-x200.pnq.redhat.com> (raw)
In-Reply-To: <496C5E6B.8010304@redhat.com>
On Tue, Jan 13, 2009 at 11:27:07AM +0200, Avi Kivity wrote:
> Amit Shah wrote:
>> CPUID functions 4, 0xb and 0xd behave differently for different values of ECX.
>> Store these values if userspace passes them.
>>
>
> Userspace has no way of knowing whether the kernel contains this fix or not.
>
> Use the SET_CPUID2 interface instead.
OK; So first attempt to use the SET_CPUID2 interface. If that fails (new
userspace on older kernel), what should we do?
Amit
next prev parent reply other threads:[~2009-01-13 9:40 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-12 10:49 CPUID handling: cleanups and support for storing subleaf values Amit Shah
2009-01-12 10:49 ` [PATCH] KVM: x86: Fix typos and whitespace errors Amit Shah
2009-01-12 10:49 ` [PATCH] KVM: x86: Store multiple cpuid entries for a single function Amit Shah
2009-01-12 20:39 ` Muli Ben-Yehuda
2009-01-13 5:23 ` Amit Shah
2009-01-13 9:27 ` Avi Kivity
2009-01-13 9:40 ` Amit Shah [this message]
2009-01-13 9:45 ` Avi Kivity
2009-01-13 9:58 ` Amit Shah
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=20090113094022.GB22533@amit-x200.pnq.redhat.com \
--to=amit.shah@redhat.com \
--cc=avi@redhat.com \
--cc=kvm@vger.kernel.org \
/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.