On 22/01/2009 14:55, "Jun Koi" <junkoi2004@xxxxxxxxx> wrote:
> On Thu, Jan 22, 2009 at 7:21 PM, Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
> wrote:
>> We don't call paging_fault() for PV guests (unless doing live migration).
>> Paging_mode_enabled() and paging_mode_external() will both return 0.
>> 
>
> Oops I skip that code, so missed it. Thanks!
>
> BTW, this code in xen/arch/x86/traps.c::fixup_page_fault() looks
> suspicious: the VM_ASSIST check looks bogus. Is that dead code?
No, we only emulate pagetable writes for PV guests if the guest wants us to.
 -- Keir
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