From: Avi Kivity <avi@redhat.com>
To: Gleb Natapov <gleb@redhat.com>
Cc: Peter Lieven <pl@dlh.net>, qemu-devel@nongnu.org, kvm@vger.kernel.org
Subject: [Qemu-devel] Re: Live Migration of 32-bit Linux guest broken since 2.6.35-rc2
Date: Wed, 09 Jun 2010 18:17:50 +0300 [thread overview]
Message-ID: <4C0FB09E.1080604@redhat.com> (raw)
In-Reply-To: <20100609151214.GC14316@redhat.com>
On 06/09/2010 06:12 PM, Gleb Natapov wrote:
>
>>> a) i remember that there (have been) are instructions that have a
>>> high virtualization penalty.
>>> are there flags that should better not be offered to a VM?
>>>
>> Not that I know of.
>>
>>
> rdtscp? I think it's always emulated.
>
No, it executes natively. It does increase the msr switching cost since
we need to switch MSR_TSC_AUX in addition.
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2010-06-09 15:17 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-07 21:03 [Qemu-devel] Live Migration of 32-bit Linux guest broken since 2.6.32-rc2 Peter Lieven
2010-06-08 9:13 ` [Qemu-devel] Live Migration of 32-bit Linux guest broken since 2.6.35-rc2 Peter Lieven
2010-06-08 11:29 ` [Qemu-devel] " Avi Kivity
2010-06-08 11:31 ` Avi Kivity
2010-06-08 11:51 ` Avi Kivity
2010-06-08 12:49 ` Peter Lieven
2010-06-08 12:51 ` Avi Kivity
2010-06-08 12:59 ` Peter Lieven
2010-06-08 13:28 ` Peter Lieven
2010-06-08 13:34 ` Avi Kivity
2010-06-08 13:38 ` Peter Lieven
2010-06-08 13:40 ` Avi Kivity
2010-06-08 13:44 ` Peter Lieven
2010-06-08 13:45 ` Avi Kivity
2010-06-09 8:29 ` Peter Lieven
2010-06-09 15:08 ` Avi Kivity
2010-06-09 15:12 ` Gleb Natapov
2010-06-09 15:17 ` Avi Kivity [this message]
2010-06-08 11:38 ` Peter Lieven
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