From: Ingo Molnar <mingo@kernel.org>
To: Jan Beulich <JBeulich@suse.com>
Cc: lenb@kernel.org, x86@kernel.org, tglx@linutronix.de,
xen-devel@lists.xenproject.org, corbet@lwn.net,
boris.ostrovsky@oracle.com, mingo@redhat.com, rjw@rjwysocki.net,
Juergen Gross <jgross@suse.com>,
linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org,
hpa@zytor.com, Borislav Petkov <bp@alien8.de>,
Matt Fleming <matt@codeblueprint.co.uk>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>
Subject: Re: [Xen-devel] [PATCH v2 1/3] x86/boot: add acpi rsdp address to setup_header
Date: Fri, 8 Dec 2017 09:35:16 +0100 [thread overview]
Message-ID: <20171208083516.gc7buju6zucxnlnf@gmail.com> (raw)
In-Reply-To: <5A2A5B4C0200007800195CDC@prv-mh.provo.novell.com>
* Jan Beulich <JBeulich@suse.com> wrote:
> >>> On 08.12.17 at 08:16, <mingo@kernel.org> wrote:
> > Also, a more fundamental question: why doesn't Xen use EFI to hand over
> > hardware configuration details?
>
> Iirc the main purpose of the change here is to allow booting PVH
> (guest or Dom0) with Grub2 in the middle. PVH, at least for the
> time being, is something that gets away without any firmware
> (and I'm pretty certain this is going to remain that way for Dom0).
> ACPI tables are being built by the tool stack (guest) or hypervisor
> (Dom0). Hence there simply isn't any EFI which could be used to
> propagate such information.
Ok, that's fair enough. If hpa (or someone else) doesn't object to the boot
protocol extension this approach looks good to me in principle.
Thanks,
Ingo
next prev parent reply other threads:[~2017-12-08 8:35 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-07 12:28 [PATCH v2 0/3] x86: make rsdp address accessible via boot params Juergen Gross
2017-12-07 12:28 ` [PATCH v2 1/3] x86/boot: add acpi rsdp address to setup_header Juergen Gross
2017-12-08 7:16 ` Ingo Molnar
2017-12-08 8:28 ` [Xen-devel] " Jan Beulich
2017-12-08 8:35 ` Ingo Molnar [this message]
2017-12-08 8:36 ` Juergen Gross
2017-12-08 8:48 ` Ingo Molnar
2017-12-08 8:52 ` Juergen Gross
2017-12-07 12:28 ` [PATCH v2 2/3] x86/acpi: take rsdp address for boot params if available Juergen Gross
2017-12-08 7:05 ` Ingo Molnar
2017-12-08 8:26 ` Juergen Gross
2017-12-08 11:14 ` Juergen Gross
2017-12-08 11:26 ` Ingo Molnar
2017-12-08 11:51 ` Juergen Gross
2017-12-07 12:28 ` [PATCH v2 3/3] x86/xen: supply rsdp address in boot params for pvh guests Juergen Gross
2017-12-08 7:22 ` Ingo Molnar
2017-12-08 8:40 ` Juergen Gross
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=20171208083516.gc7buju6zucxnlnf@gmail.com \
--to=mingo@kernel.org \
--cc=JBeulich@suse.com \
--cc=ard.biesheuvel@linaro.org \
--cc=boris.ostrovsky@oracle.com \
--cc=bp@alien8.de \
--cc=corbet@lwn.net \
--cc=hpa@zytor.com \
--cc=jgross@suse.com \
--cc=lenb@kernel.org \
--cc=linux-acpi@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=matt@codeblueprint.co.uk \
--cc=mingo@redhat.com \
--cc=rjw@rjwysocki.net \
--cc=tglx@linutronix.de \
--cc=x86@kernel.org \
--cc=xen-devel@lists.xenproject.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