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RE: [Xen-devel] Error starting xend

To: "Nakajima, Jun" <jun.nakajima@xxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-devel] Error starting xend
From: "Puthiyaparambil, Aravindh" <aravindh.puthiyaparambil@xxxxxxxxxx>
Date: Mon, 22 Aug 2005 13:24:16 -0400
Cc: "Koren, Bradley J" <Bradley.Koren@xxxxxxxxxx>, "Magolan, John F" <John.Magolan@xxxxxxxxxx>, "Subrahmanian, Raj" <raj.subrahmanian@xxxxxxxxxx>, "Davis, Jason" <jason.davis@xxxxxxxxxx>, "Vessey, Bruce A" <Bruce.Vessey@xxxxxxxxxx>
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Thread-topic: [Xen-devel] Error starting xend
Jun,

That patch did the trick. Let's hope this completes the non-NX/XD
support. I am now able to run without the rm_nx patch on the ES7000
x86_64 (with my clustered APIC kludge).

Thanks,
Aravindh 

> -----Original Message-----
> From: Nakajima, Jun [mailto:jun.nakajima@xxxxxxxxx]
> Sent: Monday, August 22, 2005 12:44 PM
> To: Puthiyaparambil, Aravindh; xen-devel@xxxxxxxxxxxxxxxxxxx
> Cc: Vessey, Bruce A; Subrahmanian, Raj; Davis, Jason; Magolan, John F;
> Koren, Bradley J
> Subject: RE: [Xen-devel] Error starting xend
> 
> Puthiyaparambil, Aravindh wrote:
> >>> (XEN) DOM0: (file=mm.c, line=1055) Bad L1 flags 800000
> >>
> >> This means non-NX/XD support is not complete yet. Can you figure
out
> >> who in xenlinux made that request? If you can look at the return
> >> address of the hypercall, you can tell who it is.
> >
> > direct_remap_area_pages() [arch/xen/x86_64/mm/ioremap.c] is the
> > xenlinux function that is making the request. There are two
> > HYPERVISOR_mmu_update() calls. It is happening on the second call
> > (line 457).
> >
> > Hope this helps.
> > Aravindh
> 
> Can you try this patch?
> 
> diff -r 4adaea8679cf linux-2.6-xen-sparse/arch/xen/x86_64/mm/ioremap.c
> --- a/linux-2.6-xen-sparse/arch/xen/x86_64/mm/ioremap.c       Mon Aug
22
> 06:45:10 2005
> +++ b/linux-2.6-xen-sparse/arch/xen/x86_64/mm/ioremap.c       Mon Aug
22
> 09:40:47 2005
> @@ -442,7 +442,7 @@
>                * __direct_remap_area_pages().
>                */
>               v->val = (machine_addr & PAGE_MASK) | pgprot_val(prot);
> -
> +             v->val &= __supported_pte_mask;
>               machine_addr += PAGE_SIZE;
>               address += PAGE_SIZE;
>               v++;
> 
> Jun
> ---
> Intel Open Source Technology Center

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