From: zhaoshenglong@huawei.com (Shannon Zhao)
To: linux-arm-kernel@lists.infradead.org
Subject: [Discussion] how to implement external power down for ARM
Date: Thu, 7 May 2015 20:18:56 +0800 [thread overview]
Message-ID: <554B5830.2090600@huawei.com> (raw)
In-Reply-To: <CAFEAcA-E=s3fhKAe4XS=rVdqw8HUO7EvqM7_C_oob1Kbg3MDGw@mail.gmail.com>
On 2015/5/7 20:12, Peter Maydell wrote:
> On 7 May 2015 at 13:10, Shannon Zhao <zhaoshenglong@huawei.com> wrote:
>> BTW, IIUC QEMU doesn't support the gracefully reboot support. The reboot
>> depends on libvirt or other management tools. So the reboot case in
>> virtualization is firstly poweroff, then start again.
>
> I'm not sure what you mean by this -- QEMU supports 'reset this
> VM' at the machine emulation level, so if we can tell the guest
> to reboot then it should as part of this process issue the
> PSCI SYSTEM_RESET command, which QEMU/KVM will then handle
> to do a reset of the VM.
>
Yes, QEMU supports reset, but doesn't support (gracefully) reboot. And
reset doesn't depends on the guest, it just restart VM forcefully.
Reboot likes poweroff and start, while reset likes destroy and start.
--
Shannon
next prev parent reply other threads:[~2015-05-07 12:18 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-30 1:03 [Discussion] how to implement external power down for ARM Shannon Zhao
2015-04-30 8:03 ` Arnd Bergmann
2015-04-30 9:08 ` Peter Maydell
2015-04-30 9:19 ` Arnd Bergmann
2015-04-30 9:29 ` Mark Rutland
2015-04-30 9:56 ` Arnd Bergmann
2015-05-04 2:09 ` Shannon Zhao
2015-05-04 15:49 ` Arnd Bergmann
2015-05-05 2:57 ` Joel Stanley
2015-05-05 9:53 ` Arnd Bergmann
2015-05-05 10:51 ` Christoffer Dall
2015-05-05 10:55 ` Arnd Bergmann
2015-05-05 11:13 ` Shannon Zhao
2015-05-06 6:56 ` Shannon Zhao
2015-05-06 7:29 ` Arnd Bergmann
2015-05-06 8:19 ` Shannon Zhao
2015-05-06 8:37 ` Arnd Bergmann
2015-05-06 8:41 ` Shannon Zhao
2015-05-06 10:14 ` Christoffer Dall
2015-05-07 2:39 ` Shannon Zhao
2015-05-07 8:55 ` Arnd Bergmann
2015-05-07 9:18 ` Shannon Zhao
2015-05-07 9:43 ` Arnd Bergmann
2015-05-07 12:10 ` Shannon Zhao
2015-05-07 12:12 ` Peter Maydell
2015-05-07 12:18 ` Shannon Zhao [this message]
2015-05-07 12:34 ` Peter Maydell
2015-05-07 12:48 ` Arnd Bergmann
2015-05-07 13:02 ` Shannon Zhao
2015-04-30 13:38 ` Hanjun Guo
2015-05-04 1:55 ` Shannon Zhao
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