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From: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
To: kvm@vger.kernel.org
Subject: nmi is broken?
Date: Fri, 22 Apr 2011 04:21:52 +0900	[thread overview]
Message-ID: <87sjtbe7fz.fsf@devron.myhome.or.jp> (raw)

Hi,

I noticed recently NMI on guest kernel is not working well.  host/guest
kernel is 2.6.39-rc4, and using vmx.

And test code is something like the following:

	local_irq_disable();
	for (i = 0; i < 10; i++) {
		int cpu = get_cpu();
		printk("%s: nmi %u, lapic %u\n", __FUNCTION__,
			nmi_count(cpu), irq_stat[cpu].apic_timer_irqs);
		mdelay(1000);
		put_cpu();
	}

the result is both of nmi and lapic are not increased. If I used
-no-kvm-irqchip, it works fine (increase nmi only). So, it seems to be
the bug of kvm driver side.

Ideas?
-- 
OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>

             reply	other threads:[~2011-04-21 19:21 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-04-21 19:21 OGAWA Hirofumi [this message]
2011-04-23 22:50 ` nmi is broken? OGAWA Hirofumi
2011-04-24  6:44   ` Avi Kivity
2011-04-24  9:17     ` OGAWA Hirofumi
2011-04-24  9:46       ` Jan Kiszka
2011-04-24 11:13         ` OGAWA Hirofumi
2011-04-24 11:15           ` OGAWA Hirofumi
2011-04-24 12:24     ` Jan Kiszka
2011-04-27  8:55       ` Avi Kivity
2011-04-27 12:09         ` Jan Kiszka
2011-04-28  1:28         ` OGAWA Hirofumi
2011-04-28  9:59           ` Avi Kivity
2011-04-28 13:44             ` OGAWA Hirofumi
2011-04-28 14:23               ` OGAWA Hirofumi
2011-05-01  1:45                 ` OGAWA Hirofumi
2011-05-02  8:46                   ` Avi Kivity
2011-05-02 14:30                     ` OGAWA Hirofumi
2011-05-03  9:36                       ` Avi Kivity
2011-05-03 10:07                         ` Avi Kivity
2011-05-03 13:25                           ` OGAWA Hirofumi
2011-05-03 13:35                             ` Avi Kivity
2011-05-03 16:57                               ` OGAWA Hirofumi
2011-05-03 17:09                                 ` Avi Kivity
2011-05-03 17:45                                   ` OGAWA Hirofumi
2011-05-04  8:27                                     ` Avi Kivity
2011-05-04 15:40                                       ` OGAWA Hirofumi
2011-05-04 16:15                                         ` Avi Kivity
2011-04-24 14:08     ` Jan Kiszka
2011-05-03  9:43       ` Avi Kivity
2011-05-03 10:37         ` Jan Kiszka
2011-05-03 13:31           ` Avi Kivity
2011-05-03 14:29             ` Jan Kiszka
2011-05-03 14:37               ` Avi Kivity
2011-05-03 15:01                 ` Jan Kiszka
  -- strict thread matches above, loose matches on Subject: below --
2001-11-30  9:10 NMI is broken! george anzinger
2001-12-01  7:11 ` george anzinger

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