From: Dou Liyang <douly.fnst@cn.fujitsu.com>
To: Juergen Gross <jgross@suse.com>,
x86@kernel.org, linux-kernel@vger.kernel.org, tglx@linutronix.de
Cc: indou.takao@jp.fujitsu.com, xen-devel@lists.xenproject.org,
bhe@redhat.com, rjw@rjwysocki.net, bp@alien8.de, hpa@zytor.com,
izumi.taku@jp.fujitsu.com, boris.ostrovsky@oracle.com,
mingo@kernel.org
Subject: Re: [PATCH v8 10/13] x86/xen: Bypass intr mode setup in enlighten_pv system
Date: Mon, 28 Aug 2017 13:15:52 +0800 [thread overview]
Message-ID: <4f5cc022-64cd-6738-5328-390ee2715c72__31409.1394808658$1503897439$gmane$org@cn.fujitsu.com> (raw)
In-Reply-To: <2d5f4a0b-31a9-31cc-9403-67a1fe9263d0@suse.com>
Hi Juergen,
At 08/28/2017 12:32 PM, Juergen Gross wrote:
> On 28/08/17 06:25, Juergen Gross wrote:
>> On 28/08/17 05:20, Dou Liyang wrote:
>>> XEN PV overrides smp_prepare_cpus(). xen_pv_smp_prepare_cpus()
>>> initializes interrupts in the XEN PV specific way and does not invoke
>>> native_smp_prepare_cpus(). As a consequence, x86_init.intr_mode_init() is
>>> not invoked either.
>>>
>>> The invocation of x86_init.intr_mode_init() will be moved from
>>> native_smp_prepare_cpus() in a follow up patch to solve <INSERT
>>> REASON/PROBLEM>.
>>
>> Can you be a little bit more precise here, please? :-)
>>
>>> That move would cause the invocation of x86_init.intr_mode_init() for XEN
>>> PV platforms. To prevent that, override the default x86_init.
>>> intr_mode_init() callback with a noop().
>>>
>>> [Rewrited by Thomas Gleixner <tglx@linutronix.de>]
>>>
>>> Signed-off-by: Dou Liyang <douly.fnst@cn.fujitsu.com>
>>> Cc: xen-devel@lists.xenproject.org
>>> Cc: boris.ostrovsky@oracle.com
>>
>> On which tree does this apply? Would be nice to get a hint against which
>> source this can be reviewed.
>
> Aah, just found the rest of the series. In case a single patch of a
> series isn't stand alone it would be nice to receive at least the cover
> letter of the series in order to know what its all about.
>
Sorry to confuse you, It's my fault.
Thank you for your reply. I understood. will CC the cover letter to
linux-xen and linux-acpi.
Thanks,
dou.
>
> Juergen
>
>
>
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next prev parent reply other threads:[~2017-08-28 5:16 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-28 3:20 [PATCH v8 00/13] Unify the interrupt delivery mode and do its setup in advance Dou Liyang
2017-08-28 3:20 ` [PATCH v8 01/13] x86/apic: Construct a selector for the interrupt delivery mode Dou Liyang
2017-09-06 0:55 ` Baoquan He
2017-09-06 4:18 ` Dou Liyang
2017-09-06 9:02 ` Baoquan He
2017-09-06 10:17 ` Baoquan He
2017-09-07 4:19 ` Dou Liyang
2017-09-07 5:22 ` Baoquan He
2017-09-12 1:20 ` Dou Liyang
2017-09-12 8:04 ` Baoquan He
2017-09-13 2:30 ` Baoquan He
2017-09-13 3:48 ` Dou Liyang
2017-08-28 3:20 ` [PATCH v8 02/13] x86/apic: Prepare for unifying the interrupt delivery modes setup Dou Liyang
2017-08-28 3:20 ` [PATCH v8 03/13] x86/apic: Split local APIC timer setup from the APIC setup Dou Liyang
2017-08-28 3:20 ` [PATCH v8 04/13] x86/apic: Move logical APIC ID away from apic_bsp_setup() Dou Liyang
2017-08-28 3:20 ` [PATCH v8 05/13] x86/apic: Unify interrupt mode setup for SMP-capable system Dou Liyang
2017-08-28 3:20 ` [PATCH v8 06/13] x86/apic: Mark the apic_intr_mode extern for sanity check cleanup Dou Liyang
2017-09-06 4:25 ` Baoquan He
2017-09-06 5:26 ` Baoquan He
2017-09-06 5:41 ` Dou Liyang
2017-09-06 8:03 ` Baoquan He
2017-09-07 2:27 ` Dou Liyang
2017-09-07 2:34 ` Baoquan He
2017-08-28 3:20 ` [PATCH v8 07/13] x86/apic: Unify interrupt mode setup for UP system Dou Liyang
2017-08-28 3:20 ` [PATCH v8 08/13] x86/ioapic: Refactor the delay logic in timer_irq_works() Dou Liyang
2017-08-28 3:20 ` [PATCH v8 09/13] x86/init: add intr_mode_init to x86_init_ops Dou Liyang
2017-08-28 3:20 ` [PATCH v8 10/13] x86/xen: Bypass intr mode setup in enlighten_pv system Dou Liyang
2017-08-28 3:20 ` Dou Liyang
2017-08-28 4:25 ` Juergen Gross
2017-08-28 4:25 ` [Xen-devel] " Juergen Gross
2017-08-28 4:32 ` Juergen Gross
2017-08-28 4:32 ` [Xen-devel] " Juergen Gross
2017-08-28 5:15 ` Dou Liyang
2017-08-28 5:15 ` Dou Liyang [this message]
2017-08-28 3:20 ` [PATCH v8 11/13] ACPI / init: Invoke early ACPI initialization earlier Dou Liyang
2017-08-28 3:20 ` Dou Liyang
2017-08-28 3:20 ` [PATCH v8 12/13] x86/time: Initialize interrupt mode behind timer init Dou Liyang
2017-08-28 3:20 ` [PATCH v8 13/13] x86/apic: Remove the init_bsp_APIC() Dou Liyang
2017-08-28 5:38 ` [PATCH v8 00/13] Unify the interrupt delivery mode and do its setup in advance Dou Liyang
2017-08-28 5:38 ` Dou Liyang
2017-08-28 5:38 ` Dou Liyang
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