[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Xen-devel] How does Xen emulate guest's write to its pte ?

Hi all, 
I traced Xen's writable page table handler: PV guests' write operation to a pte will trap to Xen's page fault handler ptwr_do_page_fault() which will call x86_emulate() to emulate the write. 
But  after I print out the pte (which maps faulting virtual address) value,  I was very surprised to find that, the value does not change before/after x86_emulation(). This result confuses me: so how does Xen emulate pte write then ?
Thanks a lot !

Xen-devel mailing list



Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.