Re: [RFC] [PATCH] 2.5.44 bootloader fix

H. Peter Anvin (hpa@zytor.com)
26 Oct 2002 13:46:42 -0700

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

-- 
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