From: "Lan, Tianyu" <tianyu.lan@intel.com>
To: Jan Beulich <JBeulich@suse.com>
Cc: sstabellini@kernel.org, wei.liu2@citrix.com,
George.Dunlap@eu.citrix.com, andrew.cooper3@citrix.com,
ian.jackson@eu.citrix.com,
xen-devel <xen-devel@lists.xenproject.org>
Subject: Re: [PATCH] Xen/timer: Disable watchdog during dumping timer queues
Date: Thu, 22 Sep 2016 23:04:40 +0800 [thread overview]
Message-ID: <d9d7608d-595f-bad8-ea18-a6744aa9459b@intel.com> (raw)
In-Reply-To: <57E4062E0200007800111B29@prv-mh.provo.novell.com>
On 9/22/2016 10:26 PM, Jan Beulich wrote:
>>> But please also answer the earlier question, which you did strip
>>> >> from your reply:
>>> >>
>>>> >>> Which btw raises another question: Why are you in polling mode in
>>>> >>> the first place? Do you have a UART without working interrupt?
>> >
>> > I found there was no interrupt with Xen ns16550 dirver while
>> > linux kernel's serial driver can receive interrupt.
> And do you know the reason? Is it perhaps a PCI plug in card, and
> you don't specify the IRQ on the command line? Or the kernel
> doesn't provide the necessary information (from ACPI) for Xen to
> set up that IRQ?
No, I am not familiar serial device. But it's a ACPI device from linux
sysfs node and serial drivers use irq 4 for their interrupt both on
linux and Xen.
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next prev parent reply other threads:[~2016-09-22 15:07 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-13 7:12 [PATCH] Xen/timer: Disable watchdog during dumping timer queues Lan Tianyu
[not found] ` <57D7DCC2020000780010E553@prv-mh.provo.novell.com>
[not found] ` <c7777159-7863-99fc-76ab-e8f4195286e1@intel.com>
2016-09-13 15:25 ` Jan Beulich
2016-09-15 14:16 ` Lan, Tianyu
2016-09-15 14:32 ` Jan Beulich
2016-09-19 13:57 ` Lan, Tianyu
2016-09-19 14:46 ` Jan Beulich
2016-09-20 14:52 ` Lan, Tianyu
2016-09-20 15:36 ` Jan Beulich
2016-09-21 1:54 ` Lan Tianyu
2016-09-21 9:25 ` Jan Beulich
2016-09-22 14:18 ` Lan Tianyu
2016-09-22 14:26 ` Jan Beulich
2016-09-22 15:04 ` Lan, Tianyu [this message]
2016-09-22 15:35 ` Jan Beulich
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