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[Qemu-devel] Re: Live Migration of 32-bit Linux guest broken since 2.6.3


From: Avi Kivity
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
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.9) Gecko/20100430 Fedora/3.0.4-3.fc13 Thunderbird/3.0.4

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




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