From: Matthew Garrett <mjg59@srcf.ucam.org>
To: grub-devel@gnu.org
Subject: Issues with Linux loading code
Date: Thu, 16 Jun 2011 22:04:04 +0100 [thread overview]
Message-ID: <20110616210404.GA26013@srcf.ucam.org> (raw)
I'm currently handling some issues related to the kernel ending up on
top of used EFI regions on some machines. These seem to be exacerbated
by some of grub's behaviour. It seems that the kernel will always be
loaded at GRUB_LINUX_BZIMAGE_ADDR, which is problematic in two cases -
one being that the kernel can be configured with a different start
address, and also that the firmware may have put code there that we wish
to preserve.
At present it doesn't seem possible to indicate to the relocator that if
there isn't enough space for the decompressed kernel (ie, the init_size
parameter from the header) at the desired address, it should put the
kernel somewhere else making sure to adhere to the alignment constraints
the kernel provides. The load address and the alignment then need to be
written back into the kernel header.
Or am I misinterpreting the behaviour of the relocation code?
--
Matthew Garrett | mjg59@srcf.ucam.org
next reply other threads:[~2011-06-16 21:04 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-16 21:04 Matthew Garrett [this message]
2011-06-16 23:29 ` Issues with Linux loading code Vladimir 'φ-coder/phcoder' Serbinenko
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=20110616210404.GA26013@srcf.ucam.org \
--to=mjg59@srcf.ucam.org \
--cc=grub-devel@gnu.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.