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[Xen-ia64-devel] steal_page(MEMF_no_refcount) page->count_info no longer
| To: | Isaku Yamahata <yamahata@xxxxxxxxxxxxx> |
|---|---|
| Subject: | [Xen-ia64-devel] steal_page(MEMF_no_refcount) page->count_info no longer consistent |
| From: | Alex Williamson <alex.williamson@xxxxxx> |
| Date: | Wed, 28 Feb 2007 16:55:27 -0700 |
| Cc: | xen-ia64-devel <xen-ia64-devel@xxxxxxxxxxxxxxxxxxx> |
| Delivery-date: | Wed, 28 Feb 2007 15:54:51 -0800 |
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| Organization: | OSLO R&D |
| Sender: | xen-ia64-devel-bounces@xxxxxxxxxxxxxxxxxxx |
Hi Isaku,
Current xen-unstable.hg tip has a problem booting dom0 that I'd like
your opinion on. We're failing the check in steal_page() that ensures
that count_info is 2 when called with the MEMF_no_refcount flag. In
fact, it seems that steal_page() is now getting called for pages that
have a count_info of 1 or 2. Are we being overly paranoid with this
check, or is this an indication of a deeper problem? The change seems
to have been introduced by the recent memory allocator changes which
removed the bit width restrictions. Thanks,
Alex
--
Alex Williamson HP Open Source & Linux Org.
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