From: "H. Peter Anvin" <hpa@zytor.com>
To: Graeme Russ <graeme.russ@gmail.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: x86 embedded - Problem getting past 'move compressed kernel before decompression'
Date: Sat, 20 Feb 2010 21:53:25 -0800 [thread overview]
Message-ID: <4B80CA55.3040402@zytor.com> (raw)
In-Reply-To: <4B80C892.9000303@zytor.com>
On 02/20/2010 09:45 PM, H. Peter Anvin wrote:
>
> Instead, do something like:
>
> asm volatile(
> "movl %0, %%ds\n" \
> "movl %0, %%es\n" \
> "movl %0, %%fs\n" \
> "movl %0, %%gs\n" \
> "movl %0, %%ss\n" \
> "xorl %ebp, %ebp\n" \
> "xorl %ebx, %ebx\n" \
> "movl $0x100000, %%eax\n" \
> "ljmpl $0x10,$0x100000"
> : : "S" (&boot_params), "D" (0), "c" (0x18));
>
> -hpa
>
Make that:
asm volatile(
"movl %2, %%ds\n" \
"movl %2, %%es\n" \
"movl %2, %%fs\n" \
"movl %2, %%gs\n" \
"movl %2, %%ss\n" \
"xorl %ebp, %ebp\n" \
"xorl %ebx, %ebx\n" \
"ljmpl $0x10,$0x100000"
: : "S" (&boot_params), "D" (0), "r" (0x18));
--
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel. I don't speak on their behalf.
next prev parent reply other threads:[~2010-02-21 5:53 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-21 2:03 x86 embedded - Problem getting past 'move compressed kernel before decompression' Graeme Russ
2010-02-21 5:45 ` H. Peter Anvin
2010-02-21 5:53 ` H. Peter Anvin [this message]
2010-02-21 9:11 ` Yuhong Bao
2010-02-21 22:51 ` Graeme Russ
2010-02-27 5:06 ` Graeme Russ
2010-03-01 11:56 ` Graeme Russ
2010-03-01 16:46 ` H. Peter Anvin
2010-03-01 19:41 ` Graeme Russ
2010-03-01 19:43 ` H. Peter Anvin
2010-03-01 19:59 ` Graeme Russ
2010-03-05 13:02 ` Graeme Russ
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=4B80CA55.3040402@zytor.com \
--to=hpa@zytor.com \
--cc=graeme.russ@gmail.com \
--cc=linux-kernel@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