From: Sheng Yang <sheng@linux.intel.com>
To: Avi Kivity <avi@redhat.com>, Marcelo Tosatti <mtosatti@redhat.com>
Cc: kvm@vger.kernel.org, Sheng Yang <sheng@linux.intel.com>
Subject: [PATCH 0/3] Emulate MSI-X mask bits for assigned devices
Date: Tue, 28 Sep 2010 17:44:09 +0800 [thread overview]
Message-ID: <1285667052-24907-1-git-send-email-sheng@linux.intel.com> (raw)
Hi Avi & Marcelo
This patchset would add emulation of MSI-X mask bit for assigned devices in
QEmu.
BTW: We are also purposed an acceleration of MSI-X mask bit for KVM - to get
it done in kernel. That's because sometime MSI-X mask bit was accessed very
frequently by guest and emulation in QEmu cost a lot(tens to hundreds percent
CPU utilization sometime), e.g. guest using Linux 2.6.18 or under some heavy
workload. The method has been proved efficient in Xen, but it would require
VMM to handle MSI-X table. Is that OK with you?
--
regards
Yang, Sheng
next reply other threads:[~2010-09-28 9:44 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-28 9:44 Sheng Yang [this message]
2010-09-28 9:44 ` [PATCH 1/3] KVM: Emulation MSI-X mask bits for assigned devices Sheng Yang
2010-09-28 13:36 ` Michael S. Tsirkin
2010-09-29 1:17 ` Sheng Yang
2010-09-30 16:25 ` Marcelo Tosatti
2010-09-29 8:36 ` Avi Kivity
2010-09-30 5:41 ` Sheng Yang
2010-10-03 13:03 ` Avi Kivity
2010-10-11 9:32 ` Sheng Yang
2010-09-30 16:18 ` Marcelo Tosatti
2010-10-11 9:49 ` Sheng Yang
2010-10-11 17:11 ` Marcelo Tosatti
2010-10-03 11:12 ` Michael S. Tsirkin
2010-10-11 9:28 ` Sheng Yang
2010-10-11 10:01 ` Michael S. Tsirkin
2010-10-12 6:49 ` Sheng Yang
2010-10-12 18:28 ` Michael S. Tsirkin
2010-10-13 1:03 ` Sheng Yang
2010-10-13 10:35 ` Michael S. Tsirkin
2010-10-12 18:30 ` Michael S. Tsirkin
2010-10-13 0:58 ` Sheng Yang
2010-10-13 12:03 ` Michael S. Tsirkin
2010-09-28 9:44 ` [PATCH 2/3] qemu-kvm: device assignment: Some clean up for MSI-X code Sheng Yang
2010-09-28 9:44 ` [PATCH 3/3] qemu-kvm: device assignment: emulate MSI-X mask bits Sheng Yang
2010-09-30 16:44 ` [PATCH 0/3] Emulate MSI-X mask bits for assigned devices Marcelo Tosatti
2010-10-11 9:34 ` Sheng Yang
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