From: Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
To: Jan Kiszka <jan.kiszka-S0/GAf8tV78@public.gmane.org>
Cc: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
Subject: Re: High vm-exit latencies during kvm boot-up/shutdown
Date: Tue, 23 Oct 2007 11:46:57 +0200 [thread overview]
Message-ID: <471DC311.2050003@qumranet.com> (raw)
In-Reply-To: <471DBA1A.2080108-S0/GAf8tV78@public.gmane.org>
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Jan Kiszka wrote:
> Clarification: I can't precisely tell what code is executed in VM mode,
> as I don't have qemu or that guest instrumented. I just see the kernel
> entering VM mode and leaving it again more than 300 us later. So I
> wonder why this is allowed while some external IRQ is pending.
>
>
How do you know an external interrupt is pending?
kvm programs the hardware to exit when an external interrupt arrives.
--
Do not meddle in the internals of kernels, for they are subtle and quick to panic.
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next prev parent reply other threads:[~2007-10-23 9:46 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-22 23:09 High vm-exit latencies during kvm boot-up/shutdown Jan Kiszka
[not found] ` <471D2D8C.1080202-S0/GAf8tV78@public.gmane.org>
2007-10-23 1:05 ` Dong, Eddie
[not found] ` <10EA09EFD8728347A513008B6B0DA77A02441127-wq7ZOvIWXbNpB2pF5aRoyrfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2007-10-23 6:38 ` Jan Kiszka
[not found] ` <471D96DC.7070809-S0/GAf8tV78@public.gmane.org>
2007-10-23 7:46 ` Dong, Eddie
[not found] ` <10EA09EFD8728347A513008B6B0DA77A024414D9-wq7ZOvIWXbNpB2pF5aRoyrfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2007-10-23 9:08 ` Jan Kiszka
[not found] ` <471DBA1A.2080108-S0/GAf8tV78@public.gmane.org>
2007-10-23 9:46 ` Avi Kivity [this message]
[not found] ` <471DC311.2050003-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-10-23 13:30 ` Jan Kiszka
[not found] ` <471DF76B.7040001-kv7WeFo6aLtBDgjK7y7TUQ@public.gmane.org>
2007-10-23 14:19 ` Avi Kivity
[not found] ` <471E02F7.6080408-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-10-23 14:41 ` Jan Kiszka
[not found] ` <471E0818.6060405-kv7WeFo6aLtBDgjK7y7TUQ@public.gmane.org>
2007-10-23 14:44 ` Jan Kiszka
2007-10-23 15:26 ` Avi Kivity
[not found] ` <471E1290.2000208-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-10-23 15:59 ` Jan Kiszka
[not found] ` <471E1A77.90808-kv7WeFo6aLtBDgjK7y7TUQ@public.gmane.org>
2007-10-23 16:14 ` Avi Kivity
[not found] ` <471E1DCD.5040301-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-10-23 16:31 ` Jan Kiszka
[not found] ` <471E21D7.3000309-kv7WeFo6aLtBDgjK7y7TUQ@public.gmane.org>
2007-10-23 16:38 ` Avi Kivity
[not found] ` <471E238E.6040005-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-10-23 16:56 ` Jan Kiszka
[not found] ` <471E27B0.1090001-kv7WeFo6aLtBDgjK7y7TUQ@public.gmane.org>
2007-10-23 17:05 ` Avi Kivity
[not found] ` <471E29C5.1060807-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-10-24 8:37 ` Jan Kiszka
[not found] ` <471F0464.4000704-kv7WeFo6aLtBDgjK7y7TUQ@public.gmane.org>
2007-10-24 8:52 ` Avi Kivity
[not found] ` <471F07C0.8040104-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-10-24 9:16 ` Jan Kiszka
[not found] ` <471F0D57.3020209-kv7WeFo6aLtBDgjK7y7TUQ@public.gmane.org>
2007-10-24 9:33 ` Avi Kivity
[not found] ` <471F116D.9080903-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-10-24 16:22 ` Jan Kiszka
[not found] ` <471F7143.8040406-kv7WeFo6aLtBDgjK7y7TUQ@public.gmane.org>
2007-10-24 16:52 ` Avi Kivity
[not found] ` <471F7865.7070506-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-10-25 17:50 ` Jan Kiszka
[not found] ` <4720D76D.7070300-kv7WeFo6aLtBDgjK7y7TUQ@public.gmane.org>
2007-10-25 18:02 ` Avi Kivity
[not found] ` <4720DA42.6090300-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-10-26 1:41 ` Dong, Eddie
[not found] ` <10EA09EFD8728347A513008B6B0DA77A02482827-wq7ZOvIWXbNpB2pF5aRoyrfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2007-10-26 8:20 ` Avi Kivity
[not found] ` <4721A350.7030409-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-10-26 8:32 ` Dong, Eddie
[not found] ` <10EA09EFD8728347A513008B6B0DA77A02482B96-wq7ZOvIWXbNpB2pF5aRoyrfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2007-10-26 9:03 ` Jan Kiszka
[not found] ` <4721AD49.7010405-kv7WeFo6aLtBDgjK7y7TUQ@public.gmane.org>
2007-10-26 9:18 ` Dong, Eddie
[not found] ` <10EA09EFD8728347A513008B6B0DA77A02482BE4-wq7ZOvIWXbNpB2pF5aRoyrfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2007-10-26 9:37 ` Dor Laor
2007-10-26 12:21 ` Avi Kivity
[not found] ` <4721DBE4.6040801-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-10-29 8:32 ` Dong, Eddie
2007-10-26 9:25 ` Avi Kivity
2007-10-26 9:18 ` Avi Kivity
[not found] ` <4721B0FD.9020006-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-10-26 9:36 ` Dong, Eddie
[not found] ` <10EA09EFD8728347A513008B6B0DA77A02482BFE-wq7ZOvIWXbNpB2pF5aRoyrfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2007-10-26 9:58 ` Avi Kivity
2007-10-23 14:43 ` Gregory Haskins
[not found] ` <1193150619.8343.21.camel-5CR4LY5GPkvLDviKLk5550HKjMygAv58XqFh9Ls21Oc@public.gmane.org>
2007-10-23 14:50 ` Jan Kiszka
2007-10-23 8:16 ` Avi Kivity
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