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RE: [Xen-devel] Xen on ES7000 x86_64 take 2

To: "Nakajima, Jun" <jun.nakajima@xxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>, "Jerone Young" <jyoung5@xxxxxxxxxx>
Subject: RE: [Xen-devel] Xen on ES7000 x86_64 take 2
From: "Puthiyaparambil, Aravindh" <aravindh.puthiyaparambil@xxxxxxxxxx>
Date: Fri, 15 Jul 2005 18:06:04 -0400
Cc: "Magolan, John F" <John.Magolan@xxxxxxxxxx>, "Davis, Jason" <jason.davis@xxxxxxxxxx>, "Vessey, Bruce A" <Bruce.Vessey@xxxxxxxxxx>, "Subrahmanian, Raj" <raj.subrahmanian@xxxxxxxxxx>
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Thread-topic: [Xen-devel] Xen on ES7000 x86_64 take 2

Here is the disassembly you had asked for. Not sure if you are still
interested in it as Jerone's patch seems to point that it was totally a
NX/XD issue. But I could be wrong.


> -----Original Message-----
> From: Nakajima, Jun [mailto:jun.nakajima@xxxxxxxxx]
> Sent: Friday, July 15, 2005 5:18 PM
> To: Puthiyaparambil, Aravindh; xen-devel@xxxxxxxxxxxxxxxxxxx; Jerone
> Cc: Magolan, John F; Subrahmanian, Raj; Davis, Jason; Vessey, Bruce A
> Subject: RE: [Xen-devel] Xen on ES7000 x86_64 take 2
> Puthiyaparambil, Aravindh wrote:
> > Jun,
> >
> > Here is the output with debug turned on. I will try Jerone's patch
> > next and post the output of that too.
> NX/XD is one reason, but looks like pfn=0 in the L1 entry. Can you
> the assembly code from ffffffff8021b600 (do "objdump -d vmlinux") or
> to see who this is?
> >
> > Aravindh
> >
> > ide: Assuming 33MHz system bus speed for PIO modes; override with
> > idebus=xx
> > ICH4: IDE controller at PCI slot 0000:00:1f.1
> > ACPI: PCI Interrupt 0000:00:1f.1[A] -> GSI 18 (level, low) -> IRQ 18
> > ICH4: chipset revision 2
> > ICH4: not 100% native mode: will probe irqs later
> >     ide0: BM-DMA at 0x1880-0x1887(XEN) DOM0: (file=mm.c, line=997)
> > L1 flags 800000
> > (XEN)
> > <1>Unable to handle kernel paging request at ffff88001fd86000 RIP:
> > <ffffffff8021b8c2>{__memset+50}
> > Unable to handle kernel NULL pointer dereference at 0000000000000880
> > RIP:
> Jun
> ---
> Intel Open Source Technology Center

Attachment: disassembly-nx.txt
Description: disassembly-nx.txt

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