On 31 May 2006, at 16:24, Jacob Gorm Hansen wrote:
(XEN) DOM66: (file=mm.c, line=1522) Bad type (saw f0000001 != exp
20200000) for mfn e41 (pfn 75a)
(XEN) DOM66: (file=mm.c, line=428) Attempt to create linear p.t. with
write perms
(XEN) DOM66: (file=mm.c, line=868) Failure in alloc_l2_table: entry 32
(XEN) DOM66: (file=mm.c, line=1567) Error while validating mfn e40
(pfn 75b) for type 40000000: caf=80000003 taf=40000001
This doesn't look like the result of a pmd_clear() call. Looks like a
L2 (pgd) is being allocated -- perhaps due to pinning or changing %cr3.
It's failing because one of the L1 pages it references is writable by
the guest (ie. the guest has a writable mapping of that L1 page
somewhere).
-- Keir
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