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Re: [Xen-devel] Reproducible system crash

On 16 Mar 2005, at 18:00, Peter Joanes wrote:

(XEN) DOM0: (file=memory.c, line=409) Bad L1 type settings 0100
(XEN) DOM0: (file=memory.c, line=1759) ptwr: Could not re-validate l1 page

Someone is attempting to set _PAGE_GLOBAL bit in one of the page-table entries. XenLinux should never do this -- do you have any suspicious-looking modules installed in your kernel that may need fixing? Alternatively we could silently drop the bit rather than killing the guest. :-)

It would be interesting to know, if you kill the test that fails above in the Xen code, whether your problems all go away. It's the test that starts:
    if ( unlikely(l1v & (_PAGE_GLOBAL|_PAGE_PAT)) )

 -- Keir

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