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xen-devel
Re: [Xen-devel] netfront.c: gnttab_query_foreign_access returns nonzero
On 25 May 2006, at 20:58, Kirk Allan wrote:
Here's the serial output from a debug build of xen. The domain_crash
does not happen on the non-debug xen.
So the problem is in netback driver, or in the map/unmap grant-table
logic in Xen. The problem you saw in netfront is simply a knock-on
symptom (given netfront's current inability to recover, the bail path
there could more usefully be BUG() I suppose).
For some reason Xen has decided that the PTE that netback supplies when
it tries to unmap a grant reference does not match up with the memory
page that the grant reference grants access to.
-- Keir
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