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From: Paul Brook <paul@codesourcery.com>
To: qemu-devel@nongnu.org
Cc: Jan Kiszka <jan.kiszka@siemens.com>,
	"xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>,
	"avi@redhat.com" <avi@redhat.com>,
	Paolo Bonzini <pbonzini@redhat.com>,
	Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Subject: Re: [Qemu-devel] [PATCH v3 6/6] qemu_calculate_timeout: increase minimum timeout to 1h
Date: Tue, 14 Feb 2012 10:52:53 +0000	[thread overview]
Message-ID: <201202141052.55100.paul@codesourcery.com> (raw)
In-Reply-To: <alpine.DEB.2.00.1202131150360.7456@kaball-desktop>

> Yes, you are right. Also considering that we are only calling
> slirp_update_timeout if CONFIG_SLIRP is defined, there is no need for
> the !CONFIG_SLIRP dummy version of the function.

Looks reasonable to me.  Unfortunately I can't remember which combination of 
headless VM and timer configs caused hangs when this was originally added.

If anyone has a setup that suffered timeout-related hangs last time we made 
this change, please retest with this patch.  Otherwise I guess we apply the 
patch and hope we didn't miss anything.

> Author: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
> Date:   Mon Feb 13 11:25:03 2012 +0000
> 
>     main_loop_wait: block indefinitely
>     
>     - remove qemu_calculate_timeout;
>     
>     - explicitly size timeout to uint32_t;
>     
>     - introduce slirp_update_timeout;
>     
>     - pass NULL as timeout argument to select in case timeout is the
>     maximum value;
>     
>     Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>

Acked-by: Paul Brook <paul@codesourcery.com>

WARNING: multiple messages have this Message-ID (diff)
From: Paul Brook <paul@codesourcery.com>
To: qemu-devel@nongnu.org
Cc: Jan Kiszka <jan.kiszka@siemens.com>,
	"xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>,
	"avi@redhat.com" <avi@redhat.com>,
	Paolo Bonzini <pbonzini@redhat.com>,
	Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Subject: Re: [PATCH v3 6/6] qemu_calculate_timeout: increase minimum timeout to 1h
Date: Tue, 14 Feb 2012 10:52:53 +0000	[thread overview]
Message-ID: <201202141052.55100.paul@codesourcery.com> (raw)
In-Reply-To: <alpine.DEB.2.00.1202131150360.7456@kaball-desktop>

> Yes, you are right. Also considering that we are only calling
> slirp_update_timeout if CONFIG_SLIRP is defined, there is no need for
> the !CONFIG_SLIRP dummy version of the function.

Looks reasonable to me.  Unfortunately I can't remember which combination of 
headless VM and timer configs caused hangs when this was originally added.

If anyone has a setup that suffered timeout-related hangs last time we made 
this change, please retest with this patch.  Otherwise I guess we apply the 
patch and hope we didn't miss anything.

> Author: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
> Date:   Mon Feb 13 11:25:03 2012 +0000
> 
>     main_loop_wait: block indefinitely
>     
>     - remove qemu_calculate_timeout;
>     
>     - explicitly size timeout to uint32_t;
>     
>     - introduce slirp_update_timeout;
>     
>     - pass NULL as timeout argument to select in case timeout is the
>     maximum value;
>     
>     Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>

Acked-by: Paul Brook <paul@codesourcery.com>

  reply	other threads:[~2012-02-14 10:53 UTC|newest]

Thread overview: 50+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-01-27 18:20 [Qemu-devel] [PATCH v3 0/6] prevent Qemu from waking up needlessly Stefano Stabellini
2012-01-27 18:20 ` Stefano Stabellini
2012-01-27 18:21 ` [Qemu-devel] [PATCH v3 1/6] xen: do not initialize the interval timer emulator Stefano Stabellini
2012-01-27 18:21   ` Stefano Stabellini
2012-01-27 19:09   ` [Qemu-devel] " Jan Kiszka
2012-01-27 19:09     ` Jan Kiszka
2012-01-30 11:39     ` [Qemu-devel] " Stefano Stabellini
2012-01-30 11:39       ` Stefano Stabellini
2012-01-30 15:13       ` [Qemu-devel] " Jan Kiszka
2012-01-30 15:13         ` Jan Kiszka
2012-01-27 18:21 ` [Qemu-devel] [PATCH v3 2/6] xen: disable rtc_clock Stefano Stabellini
2012-01-27 18:21   ` Stefano Stabellini
2012-01-27 20:08   ` [Qemu-devel] " Paolo Bonzini
2012-01-27 20:08     ` Paolo Bonzini
2012-01-30 11:58     ` [Qemu-devel] " Stefano Stabellini
2012-01-30 11:58       ` Stefano Stabellini
2012-01-27 18:21 ` [Qemu-devel] [PATCH v3 3/6] xen: introduce an event channel for buffered io event notifications Stefano Stabellini
2012-01-27 18:21   ` Stefano Stabellini
2012-01-27 18:21 ` [Qemu-devel] [PATCH v3 4/6] timers: the rearm function should be able to handle delta = INT64_MAX Stefano Stabellini
2012-01-27 18:21   ` Stefano Stabellini
2012-01-27 18:21 ` [Qemu-devel] [PATCH v3 5/6] qemu_next_alarm_deadline: check the expire time of a clock only if it is enabled Stefano Stabellini
2012-01-27 18:21   ` Stefano Stabellini
2012-01-27 18:21 ` [Qemu-devel] [PATCH v3 6/6] qemu_calculate_timeout: increase minimum timeout to 1h Stefano Stabellini
2012-01-27 18:21   ` Stefano Stabellini
2012-02-10  0:26   ` [Qemu-devel] " Paul Brook
2012-02-10  0:26     ` Paul Brook
2012-02-10  8:03     ` [Qemu-devel] " Paolo Bonzini
2012-02-10  8:03       ` Paolo Bonzini
2012-02-10  9:52       ` [Qemu-devel] " Paul Brook
2012-02-10  9:52         ` Paul Brook
2012-02-10 10:45         ` [Qemu-devel] " Paolo Bonzini
2012-02-10 10:45           ` Paolo Bonzini
2012-02-10 11:09           ` [Qemu-devel] " Paul Brook
2012-02-10 11:09             ` Paul Brook
2012-02-10 11:19             ` [Qemu-devel] " Stefano Stabellini
2012-02-10 11:19               ` Stefano Stabellini
2012-02-10 11:18               ` [Qemu-devel] " Paolo Bonzini
2012-02-10 11:18                 ` Paolo Bonzini
2012-02-10 11:32                 ` [Qemu-devel] " Jan Kiszka
2012-02-10 11:32                   ` Jan Kiszka
2012-02-10 17:07                   ` [Qemu-devel] " Stefano Stabellini
2012-02-10 17:07                     ` Stefano Stabellini
2012-02-10 23:34                     ` [Qemu-devel] " Paul Brook
2012-02-10 23:34                       ` Paul Brook
2012-02-13 11:52                       ` [Qemu-devel] " Stefano Stabellini
2012-02-13 11:52                         ` Stefano Stabellini
2012-02-14 10:52                         ` Paul Brook [this message]
2012-02-14 10:52                           ` Paul Brook
2012-02-14 11:55                           ` [Qemu-devel] " Stefano Stabellini
2012-02-14 11:55                             ` Stefano Stabellini

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