From: "H. Peter Anvin" <hpa@zytor.com>
To: linux-kernel@vger.kernel.org
Subject: Re: [RFC] [PATCH] 2.5.44 bootloader fix
Date: 26 Oct 2002 13:46:42 -0700 [thread overview]
Message-ID: <apeuvi$t5k$1@cesium.transmeta.com> (raw)
In-Reply-To: m1pttxlebr.fsf@frodo.biederman.org
Followup to: <m1pttxlebr.fsf@frodo.biederman.org>
By author: ebiederm@xmission.com (Eric W. Biederman)
In newsgroup: linux.dev.kernel
>
> What I am proposing is an interface change. The only known bootloader
> this does not fix is gujin and the fix of loading segments earlier is
> trivial, and fully backwards compatible. The advantage of this patch
> is that no future changes to the kernel's gdt will affect bootloaders.
>
Please detail how the interface changes. It is not at all clear from
the code.
> @@ -101,7 +96,8 @@
> popl %eax # hcount
> movl $0x100000,%edi
> cli # make sure we don't get interrupted
> - ljmp $(__KERNEL_CS), $0x1000 # and jump to the move routine
> + movl $0x1000, %ebp
> + jmpl *%ebp # and jump to the move routine
>
> /*
> * Routine (template) for moving the decompressed kernel in place,
Why are you avoiding to set __SETUP_CS here?
-hpa
--
<hpa@transmeta.com> at work, <hpa@zytor.com> in private!
"Unix gives you enough rope to shoot yourself in the foot."
http://www.zytor.com/~hpa/puzzle.txt <amsp@zytor.com>
next prev parent reply other threads:[~2002-10-26 20:40 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-10-26 9:49 [RFC] [PATCH] 2.5.44 bootloader fix Eric W. Biederman
2002-10-26 20:46 ` H. Peter Anvin [this message]
2002-10-28 16:55 ` Eric W. Biederman
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