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From: Huacai Chen <chenhuacai@gmail.com>
To: Bjorn Helgaas <helgaas@kernel.org>
Cc: Tiezhu Yang <yangtiezhu@loongson.cn>,
	Bjorn Helgaas <bhelgaas@google.com>,
	linux-pci <linux-pci@vger.kernel.org>,
	linux-kernel <linux-kernel@vger.kernel.org>,
	"Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
	Konstantin Khlebnikov <khlebnikov@openvz.org>,
	Khalid Aziz <khalid.aziz@oracle.com>,
	Vivek Goyal <vgoyal@redhat.com>, Lukas Wunner <lukas@wunner.de>,
	"Oliver O'Halloran" <oohall@gmail.com>,
	Jiaxun Yang <jiaxun.yang@flygoat.com>,
	Xuefeng Li <lixuefeng@loongson.cn>,
	zhouyanjie <zhouyanjie@wanyeetech.com>, git <git@xen0n.name>
Subject: Re: [RFC PATCH v3] PCI/portdrv: Only disable Bus Master on kexec reboot and connected PCI devices
Date: Wed, 16 Sep 2020 02:19:27 -0400	[thread overview]
Message-ID: <CAAhV-H7QbhbUjSP-uDb3dwf0Pao-DDhGQrpgPr6NLLjq31NOeg@mail.gmail.com> (raw)
In-Reply-To: <20200915203831.GA1426995@bjorn-Precision-5520>

Hi, Bjorn,

On Tue, Sep 15, 2020 at 4:38 PM Bjorn Helgaas <helgaas@kernel.org> wrote:
>
> On Tue, Sep 15, 2020 at 09:36:13AM +0800, Huacai Chen wrote:
> > Hi, Tiezhu,
> >
> > On Mon, Sep 14, 2020 at 7:25 PM Tiezhu Yang <yangtiezhu@loongson.cn> wrote:
> > >
> > > On 09/14/2020 05:46 PM, Huacai Chen wrote:
> > > > Hi, Tiezhu,
> > > >
> > > > On Mon, Sep 14, 2020 at 5:30 PM Tiezhu Yang <yangtiezhu@loongson.cn> wrote:
> > > >> On 09/14/2020 04:52 PM, Huacai Chen wrote:
> > > >>> Hi, Tiezhu,
> > > >>>
> > > >>> How do you test kexec? kexec -e or systemctl kexec? Or both?
> > > >> kexec -l vmlinux --append="root=/dev/sda2 console=ttyS0,115200"
> > > >> kexec -e
> > > > So you haven't tested "systemctl kexec"?
> > >
> > > Yes, the distro I used is Loongnix which has not kexec service now.
> > > Is there any problem when use systemctl kexec? If you have more details,
> > > please let me know.
> > If you use systemctl kexec, the first part of kexec is the same as a
> > normal reboot/poweroff. So, there is no reason that reboot/poweroff is
> > bad but kexec is good.
> > Then, Bjorn, what is the best solution now? It seems like my first
> > version is OK (commit messages should be improved, of course).
>
> Sorry, there are too many conversations going on for me to keep track
> of what first version you're referring to.  Please include a specific
> lore.kernel.org URL.
My first version means this one:
https://patchwork.kernel.org/patch/11695929/

Thanks,
Huacai
>
> Bjorn

      reply	other threads:[~2020-09-16  6:20 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-14  7:56 [RFC PATCH v3] PCI/portdrv: Only disable Bus Master on kexec reboot and connected PCI devices Tiezhu Yang
2020-09-14  8:45 ` 陈华才
     [not found] ` <tencent_13F0F91E196BCF3F0E458509@qq.com>
2020-09-14  8:52   ` [RFC " Huacai Chen
2020-09-14  9:29     ` Tiezhu Yang
2020-09-14  9:46       ` Huacai Chen
2020-09-14 11:24         ` Tiezhu Yang
2020-09-14 12:06           ` Zhou Yanjie
2020-09-14 12:33             ` Tiezhu Yang
2020-09-15  1:36           ` Huacai Chen
2020-09-15 20:38             ` Bjorn Helgaas
2020-09-16  6:19               ` Huacai Chen [this message]

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