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From: Jan Kiszka <jan.kiszka@siemens.com>
To: "Yang, Sheng" <sheng.yang@intel.com>
Cc: kvm-devel <kvm@vger.kernel.org>
Subject: LAPIC soft-disable vs. LVT masking
Date: Mon, 20 Oct 2008 10:49:11 +0200	[thread overview]
Message-ID: <48FC4607.10803@siemens.com> (raw)

Hi Sheng,

obviously, I meditated too long over the APIC specs and VAPIC code of
KVM: When the guest resets the soft-enable bit in SVR, the in-kernel
APIC implementation also set the LVT masked bits - so far, so fine
(according to specs). But I failed to read out of that doc if those mask
bits are permanently set (until the guest clears them again) or only
until the soft-disabling ends (ie. they are restored to their previous
state - QEMU goes this way). Can you clarify?

Thanks,
Jan

-- 
Siemens AG, Corporate Technology, CT SE 2
Corporate Competence Center Embedded Linux

             reply	other threads:[~2008-10-20  8:52 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-10-20  8:49 Jan Kiszka [this message]
2008-10-20  9:46 ` LAPIC soft-disable vs. LVT masking Yang, Sheng
2008-10-20 11:31   ` Sheng Yang
2008-10-20 11:58     ` Jan Kiszka
2008-10-20 12:16       ` Sheng Yang
2008-10-20 12:21         ` Jan Kiszka

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