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[Xen-devel] Page fault for paravirtualization?


  • To: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: Jun Koi <junkoi2004@xxxxxxxxx>
  • Date: Thu, 22 Jan 2009 19:15:36 +0900
  • Delivery-date: Thu, 22 Jan 2009 02:16:55 -0800
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  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>

Hi,

I am trying to understand how Xen handle pagefault for
paravirtialization VM on x86.

In xen/arch/x86/traps.c, do_page_fault() calls fixup_page_fault(),
which calls paging_fault(). Then paging_fault() calls
v->arch.paging.mode->page_fault() in include/asm-x86/paging.h

However, I dont see where in the code we assign v->arch.paging.mode
for PV domain. I grep around for many possible words, but didnt see
anything interesting.

Anybody please help?

Thanks a lot,
Jun

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