From: Ingo Molnar <mingo@kernel.org>
To: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: "Prakhya, Sai Praneeth" <sai.praneeth.prakhya@intel.com>,
"H. Peter Anvin" <hpa@zytor.com>,
Daniel Drake <drake@endlessm.com>,
Peter Zijlstra <peterz@infradead.org>,
Borislav Petkov <bp@alien8.de>,
Thomas Gleixner <tglx@linutronix.de>,
Linux Kernel <linux-kernel@vger.kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Jian-Hong Pan <jian-hong@endlessm.com>,
Matt Fleming <matt@codeblueprint.co.uk>,
linux-efi <linux-efi@vger.kernel.org>,
"Brown, Len" <len.brown@intel.com>,
"linux-tip-commits@vger.kernel.org"
<linux-tip-commits@vger.kernel.org>,
Endless Linux Upstreaming Team <linux@endlessm.com>
Subject: Re: EFI reboot vs. ACPI reboot (was: Re: [tip:x86/urgent] x86/reboot, efi: Use EFI reboot for Acer TravelMate X514-51T)
Date: Wed, 17 Apr 2019 21:17:02 +0200 [thread overview]
Message-ID: <20190417191702.GA29062@gmail.com> (raw)
In-Reply-To: <CAKv+Gu9NJH02obRtgtNf7O7Bd8Z0SdKjsBLppGd60f6ryq6OoA@mail.gmail.com>
* Ard Biesheuvel <ard.biesheuvel@linaro.org> wrote:
> On Wed, 17 Apr 2019 at 11:23, Ingo Molnar <mingo@kernel.org> wrote:
> >
> >
> > * Prakhya, Sai Praneeth <sai.praneeth.prakhya@intel.com> wrote:
> >
> > > I will ask around internally to check if it is a good idea to make EFI
> > > reboot the default method when the machine is booted in EFI mode.
> >
> > Or whether there's some robust signature that indicates "modern EFI
> > system where EFI reboot is the primary method"?
> >
> > Major EFI version or ACPI version or such?
> >
>
> I am actually at Microsoft right now, and I managed to get
> clarification on how Windows deals with this: Windows will attempt to
> use ACPI reboot first, and will only attempt to use anything else if
> that fails. EFI reset is actually its least preferred option, and so
> it is highly likely that it is untested on most of the shipping x86
> hardware if any of the other methods work.
>
> So let's not touch this.
Agreed and that's really useful information, thanks!
Ingo
next prev parent reply other threads:[~2019-04-17 19:17 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-12 8:01 [PATCH v2] x86/reboot: Use efi reboot for Acer TravelMate X514-51T Jian-Hong Pan
2019-04-16 7:52 ` [tip:x86/urgent] x86/reboot: Use EFI " tip-bot for Jian-Hong Pan
2019-04-16 8:07 ` [tip:x86/urgent] x86/reboot, efi: " tip-bot for Jian-Hong Pan
2019-04-16 8:20 ` EFI reboot vs. ACPI reboot (was: Re: [tip:x86/urgent] x86/reboot, efi: Use EFI reboot for Acer TravelMate X514-51T) Ingo Molnar
2019-04-16 11:35 ` Daniel Drake
2019-04-17 6:16 ` Ingo Molnar
2019-04-17 12:38 ` Daniel Drake
2019-04-17 15:15 ` hpa
2019-04-17 15:45 ` Ard Biesheuvel
2019-04-17 17:22 ` Prakhya, Sai Praneeth
2019-04-17 18:23 ` Ingo Molnar
2019-04-17 19:07 ` Ard Biesheuvel
2019-04-17 19:17 ` Ingo Molnar [this message]
2019-04-17 16:37 ` Ingo Molnar
2019-04-17 16:51 ` hpa
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=20190417191702.GA29062@gmail.com \
--to=mingo@kernel.org \
--cc=ard.biesheuvel@linaro.org \
--cc=bp@alien8.de \
--cc=drake@endlessm.com \
--cc=hpa@zytor.com \
--cc=jian-hong@endlessm.com \
--cc=len.brown@intel.com \
--cc=linux-efi@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-tip-commits@vger.kernel.org \
--cc=linux@endlessm.com \
--cc=matt@codeblueprint.co.uk \
--cc=peterz@infradead.org \
--cc=sai.praneeth.prakhya@intel.com \
--cc=tglx@linutronix.de \
--cc=torvalds@linux-foundation.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.