linux-kernel - Re: x86 embedded - Problem getting past 'move compressed kernel before decompression'

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Mon, 22 Feb 2010 09:51:09 +1100
From:	Graeme Russ <graeme.russ@...il.com>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: x86 embedded - Problem getting past 'move compressed kernel 
	before decompression'

On Sun, Feb 21, 2010 at 4:53 PM, H. Peter Anvin <hpa@...or.com> wrote:
> On 02/20/2010 09:45 PM, H. Peter Anvin wrote:
>
> 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));
>

Thanks Peter - I gave that a try but no luck. I am in the process of
writing some routines which will dump the contents of the registers
upon entering startup_32 and the relocation jump address prior to
the jump.

My assembler is a bit rusty, so it is taking a bit of time

What other information should I dump?

Regards,

Graeme
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/