From: Anthony Liguori <aliguori@us.ibm.com>
To: Avi Kivity <avi@redhat.com>
Cc: kvm@vger.kernel.org, Gleb Natapov <gleb@redhat.com>
Subject: Re: [PATCH] When switching to a vm8086 task, load segments as 16-bit (v2)
Date: Wed, 12 Aug 2009 08:50:29 -0500 [thread overview]
Message-ID: <4A82C8A5.9070601@us.ibm.com> (raw)
In-Reply-To: <4A82C65D.7010007@redhat.com>
Avi Kivity wrote:
> On 08/12/2009 04:15 PM, Anthony Liguori wrote:
>> While the code looks nicer with the second patch, the fact that
>> get_rflags() does a vmcs_read() seems 7 times more than before seems
>> unfortunate.
>
> We can add kvm_rflags_read(), see kvm_cache_regs.h. In any case, it's
> purely academic since task switches are rare and incredibly slow
> anyway (you have to vmcs_write() the entire register set for one).
Fair enough.
--
Regards,
Anthony Liguori
prev parent reply other threads:[~2009-08-12 13:50 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-08-11 20:57 [PATCH] When switching to a vm8086 task, load segments as 16-bit (v2) Anthony Liguori
2009-08-12 7:47 ` Avi Kivity
2009-08-12 12:11 ` Avi Kivity
2009-08-12 12:36 ` Avi Kivity
2009-08-12 13:15 ` Anthony Liguori
2009-08-12 13:40 ` Avi Kivity
2009-08-12 13:50 ` Anthony Liguori [this message]
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