> >>
> >> I'm a little disappointed but at this point it isn't a great surprise,
> >> the code is early yet and hasn't had much testing or attention.
> >> I wonder if I have missed something else silly.
> >>
> >> As for testing, can you use plain kexec to load the kernel at a
> >> different address? I'm curious to know if it is something related
> >> to the kexec on panic path or if it is just running at a different
> >> location that is the problem.
> >
I think I have found the 'something silly'. Here is a patch that allows
our Dell em64t boxes to boot. This change matches the original code. The
main difference that caused the problems was the setting of _PAGE_NX bit.
This caused issues in early_io_remap().
Thanks to Larry Woodman for debugging this.
Cheers,
Don
Signed-off-by: Don Zickus <[EMAIL PROTECTED]>
--- linux-2.6.17.noarch/arch/x86_64/mm/init.c.orig 2006-08-11
12:35:58.000000000 -0400
+++ linux-2.6.17.noarch/arch/x86_64/mm/init.c 2006-08-11 13:14:20.000000000
-0400
@@ -196,7 +196,7 @@
vaddr += addr & ~PMD_MASK;
addr &= PMD_MASK;
for (i = 0; i < pmds; i++, addr += PMD_SIZE)
- set_pmd(pmd + i,__pmd(addr | __PAGE_KERNEL_LARGE));
+ set_pmd(pmd + i,__pmd(addr | _KERNPG_TABLE |
_PAGE_PSE));
__flush_tlb();
return (void *)vaddr;
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