From: Baoquan He <bhe@redhat.com>
To: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: linux-kernel@vger.kernel.org, kexec@lists.infradead.org,
linux-arm-kernel@lists.infradead.org, linux-s390@vger.kernel.org,
akpm@linux-foundation.org, ignat@cloudflare.com,
eric_devolder@yahoo.com
Subject: Re: [PATCH 3/3] s390/Kconfig: drop select of KEXEC
Date: Thu, 23 Nov 2023 22:31:59 +0800 [thread overview]
Message-ID: <ZV9iX5HNftPjNr3S@MiWiFi-R3L-srv> (raw)
In-Reply-To: <ZV9W5AmmYhCFmN9e@li-008a6a4c-3549-11b2-a85c-c5cc2836eea2.ibm.com>
On 11/23/23 at 02:43pm, Alexander Gordeev wrote:
> On Thu, Nov 23, 2023 at 03:36:52PM +0800, Baoquan He wrote:
>
> Hi Baoquan,
>
> > No proof is found to require that S390 architecture has to select
> > KEXEC. At least from my testing at below, dropping select of KEXEC won't
> > impact anything.
>
> It does impact the outcome of defconfigs.
> Namely, CONFIG_KEXEC is not set with this patch.
Right, CONFIG_KEXEC won't be set defaultly with this patch applied.
>
> > ===testing 1===
> > CONFIG_CRASH_CORE=y
> > CONFIG_KEXEC_CORE=y
> > CONFIG_CRASH_DUMP=y
> > ===
> >
> > ===testing 2===
> > CONFIG_CRASH_CORE=y
> > CONFIG_KEXEC_CORE=y
> > CONFIG_KEXEC_FILE=y
> > CONFIG_CRASH_DUMP=y
> > ===
>
> Unfortunately, I do not quite realize what these testings were
> and what is the difference between the two.
Both these two testings have CONFIG_KEXEC=n, and building all passed.
I wound't present their difference, but two cases where no CONFIG_KEXEC
is set and no dependency on CONFIG_KEXEC is seen.
>
> > So drop the select of KEXEC now.
>
> I suggest dropping this patch. Once the previous two are upstream
> we would remove 'select KEXEC' from Kconfig together with defconfig
> updates.
I see your concern, will drop this one in v2. Thanks for checking these.
>
> > Signed-off-by: Baoquan He <bhe@redhat.com>
> > ---
> > arch/s390/Kconfig | 1 -
> > 1 file changed, 1 deletion(-)
> >
> > diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
> > index 3bec98d20283..1aec2e692dca 100644
> > --- a/arch/s390/Kconfig
> > +++ b/arch/s390/Kconfig
> > @@ -217,7 +217,6 @@ config S390
> > select HAVE_VIRT_CPU_ACCOUNTING_IDLE
> > select IOMMU_HELPER if PCI
> > select IOMMU_SUPPORT if PCI
> > - select KEXEC
> > select MMU_GATHER_MERGE_VMAS
> > select MMU_GATHER_NO_GATHER
> > select MMU_GATHER_RCU_TABLE_FREE
> > --
>
> Thanks!
>
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2023-11-23 14:32 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-23 7:36 [PATCH 0/3] kernel/Kconfig.kexec: drop select of KEXEC for CRASH_DUMP Baoquan He
2023-11-23 7:36 ` [PATCH 1/3] " Baoquan He
2023-11-23 8:23 ` Ignat Korchagin
2023-11-23 11:07 ` Baoquan He
2023-11-23 7:36 ` [PATCH 2/3] drivers/base/cpu: crash data showing should depends on KEXEC_CORE Baoquan He
2023-11-23 8:34 ` Ignat Korchagin
2023-11-23 11:15 ` Baoquan He
2023-11-24 16:44 ` Andrew Morton
2023-11-25 2:29 ` Baoquan He
2023-11-23 14:13 ` Alexander Gordeev
2023-11-23 14:27 ` Baoquan He
2023-11-23 7:36 ` [PATCH 3/3] s390/Kconfig: drop select of KEXEC Baoquan He
2023-11-23 13:43 ` Alexander Gordeev
2023-11-23 14:31 ` Baoquan He [this message]
2023-11-26 0:07 ` [PATCH 0/3] kernel/Kconfig.kexec: drop select of KEXEC for CRASH_DUMP Eric DeVolder
2023-11-27 3:29 ` Baoquan He
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=ZV9iX5HNftPjNr3S@MiWiFi-R3L-srv \
--to=bhe@redhat.com \
--cc=agordeev@linux.ibm.com \
--cc=akpm@linux-foundation.org \
--cc=eric_devolder@yahoo.com \
--cc=ignat@cloudflare.com \
--cc=kexec@lists.infradead.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-s390@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).