Re: [Xen-devel] Breakage in -unstable for Transmeta

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 24 Jun 2005, at 16:57, Carl Holtje ;021;vcsg6; wrote:

> Is the initial page table creation code in xen/include/asm/page.h?
>
> Thanks!
No, it's this piece of code in x86_32.S (which I've pasted from latest 
xen-unstable, but I think is identical to the code in 2.0.6):
        /* Initialize low and high mappings of all memory with 4MB 
pages */
        mov     $idle_pg_table-__PAGE_OFFSET,%edi
        mov     $0xe3,%eax                  /* PRESENT+RW+A+D+4MB */
1:      mov     %eax,__PAGE_OFFSET>>20(%edi) /* high mapping */
        stosl                                /* low mapping */
        add     $(1<<L2_PAGETABLE_SHIFT),%eax
        cmp     $DIRECTMAP_PHYS_END+0xe3,%eax
        jne     1b
1:      stosl   /* low mappings cover as much physmem as possible */
        add     $(1<<L2_PAGETABLE_SHIFT),%eax
        cmp     $__HYPERVISOR_VIRT_START+0xe3,%eax
        jne     1b

 -- Keir


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