From: Jan Kiszka <jan.kiszka@web.de>
To: Avi Kivity <avi@redhat.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>,
Gleb Natapov <gleb@redhat.com>, kvm <kvm@vger.kernel.org>
Subject: Re: kvm's vapic
Date: Sun, 29 Jan 2012 16:55:30 +0100 [thread overview]
Message-ID: <4F256BF2.1010906@web.de> (raw)
In-Reply-To: <4F256B4D.4080501@redhat.com>
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On 2012-01-29 16:52, Avi Kivity wrote:
> On 01/29/2012 05:51 PM, Avi Kivity wrote:
>>> Already the assumption that we find a CPU index at
>>> fs:0x51 is apparently hard-coding this. Or that kernel code is at
>>> 0x8xxxxxxx or 0xExxxxxxx.
>>>
>>> But what makes sure that we aren't patching some other obscure OS that
>>> doesn't comply with our assumptions but triggers the TPR access reports
>>> nevertheless?
>>
>> Not much, but we've never had an issue.
>
> Checking that the bios is mapped at 0x[8e]0000000 + phys should filter
> out most non-Windows OSes.
Possibly.
What about that major/minor version entries in the KPCR? Do they work,
and do we have a list of what should be there?
Jan
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next prev parent reply other threads:[~2012-01-29 15:55 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-29 15:37 kvm's vapic Jan Kiszka
2012-01-29 15:51 ` Avi Kivity
2012-01-29 15:52 ` Avi Kivity
2012-01-29 15:55 ` Jan Kiszka [this message]
2012-01-29 16:27 ` Avi Kivity
2012-01-29 16:31 ` Jan Kiszka
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