From: Gerd Hoffmann <kraxel@redhat.com>
To: Laszlo Ersek <lersek@redhat.com>
Cc: Drew <drjones@redhat.com>, "Stefan Hajnoczi" <stefanha@gmail.com>,
"Gabriel L. Somlo" <somlo@cmu.edu>,
qemu-devel@nongnu.org, "Kevin O'Connor" <kevin@koconnor.net>,
"Marc Marí" <markmb@redhat.com>
Subject: Re: [Qemu-devel] [PATCH v4 6/7] Make the kernel image in the fw_cfg DMA interface bootable
Date: Fri, 02 Oct 2015 10:09:17 +0200 [thread overview]
Message-ID: <1443773357.14636.6.camel@redhat.com> (raw)
In-Reply-To: <560D5057.6010308@redhat.com>
> - read four bytes from under the fw_cfg selector QEMU_CFG_KERNEL_SIZE
> (0x0008),
> - if it is zero, return -1 --> no kernel boot requested,
> - if it is nonzero, return 0 --> which means "top priority".
>
> In other words, I agree with:
>
> > - option_rom[nb_option_roms].bootindex = 0;
> > + option_rom[nb_option_roms].bootindex = 1;
Hmm. That makes the boot order undefined for "qemu -kernel foo -device
virtio-blk,drive=bar,bootindex=1" when using an old seabios. I don't
think this is a good idea.
cheers,
Gerd
next prev parent reply other threads:[~2015-10-02 8:09 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-01 12:14 [Qemu-devel] QEMU fw_cfg DMA interface Marc Marí
2015-10-01 12:16 ` [Qemu-devel] [PATCH v4 0/7] " Marc Marí
2015-10-01 12:16 ` [Qemu-devel] [PATCH v4 1/7] fw_cfg: document fw_cfg_modify_iXX() update functions Marc Marí
2015-10-01 12:16 ` [Qemu-devel] [PATCH v4 2/7] fw_cfg DMA interface documentation Marc Marí
2015-10-01 14:41 ` Laszlo Ersek
2015-10-01 12:16 ` [Qemu-devel] [PATCH v4 3/7] Implement fw_cfg DMA interface Marc Marí
2015-10-01 14:36 ` Laszlo Ersek
2015-10-01 15:52 ` Marc Marí
2015-10-01 17:18 ` Peter Maydell
2015-10-01 19:20 ` Laszlo Ersek
2015-10-06 14:44 ` Stefan Hajnoczi
2015-10-06 14:53 ` Peter Maydell
2015-10-08 9:07 ` Stefan Hajnoczi
2015-10-08 10:01 ` Marc Marí
2015-10-06 14:54 ` Marc Marí
2015-10-01 12:16 ` [Qemu-devel] [PATCH v4 4/7] Enable fw_cfg DMA interface for ARM Marc Marí
2015-10-01 14:42 ` Laszlo Ersek
2015-10-01 12:16 ` [Qemu-devel] [PATCH v4 5/7] Enable fw_cfg DMA interface for x86 Marc Marí
2015-10-01 14:48 ` Laszlo Ersek
2015-10-01 12:16 ` [Qemu-devel] [PATCH v4 6/7] Make the kernel image in the fw_cfg DMA interface bootable Marc Marí
2015-10-01 15:25 ` Laszlo Ersek
2015-10-01 16:02 ` Kevin O'Connor
2015-10-01 16:10 ` Laszlo Ersek
2015-10-01 18:15 ` Marc Marí
2015-10-02 8:16 ` Gerd Hoffmann
2015-10-02 8:24 ` Marc Marí
2015-10-02 9:01 ` Gerd Hoffmann
2015-10-02 11:47 ` Laszlo Ersek
2015-10-02 12:07 ` Gerd Hoffmann
2015-10-02 13:25 ` Laszlo Ersek
2015-10-02 13:30 ` Laszlo Ersek
2015-10-03 0:05 ` Jordan Justen
2015-10-02 13:38 ` Kevin O'Connor
2015-10-05 9:18 ` Gerd Hoffmann
2015-10-02 8:09 ` Gerd Hoffmann [this message]
2015-10-02 13:40 ` Kevin O'Connor
2015-10-02 13:50 ` Laszlo Ersek
2015-10-02 15:24 ` Daniel P. Berrange
2015-10-05 9:26 ` Gerd Hoffmann
2015-10-01 12:16 ` [Qemu-devel] [PATCH v4 7/7] fw_cfg: Define a static signature to be returned on DMA port reads Marc Marí
2015-10-01 16:07 ` Laszlo Ersek
2015-10-01 17:02 ` Kevin O'Connor
2015-10-01 17:17 ` Laszlo Ersek
2015-10-01 13:19 ` [Qemu-devel] [PATCH v4 0/7] fw_cfg DMA interface Kevin O'Connor
2015-10-01 16:03 ` [Qemu-devel] QEMU " Eric Blake
2015-10-01 16:11 ` Eric Blake
2015-10-01 16:19 ` Laszlo Ersek
2015-10-01 16:17 ` Laszlo Ersek
2015-10-01 16:21 ` Eric Blake
2015-10-01 16:34 ` Laszlo Ersek
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=1443773357.14636.6.camel@redhat.com \
--to=kraxel@redhat.com \
--cc=drjones@redhat.com \
--cc=kevin@koconnor.net \
--cc=lersek@redhat.com \
--cc=markmb@redhat.com \
--cc=qemu-devel@nongnu.org \
--cc=somlo@cmu.edu \
--cc=stefanha@gmail.com \
/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).