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From: Jacob Gorm Hansen <jacob@melon.dk>
To: Xen list <xen-devel@lists.sourceforge.net>
Subject: Failure in update_l1e()
Date: Tue, 13 Apr 2004 15:00:59 +0200	[thread overview]
Message-ID: <1081861258.15566.108.camel@jacobg> (raw)

hi,

I am seeing occasional failures of cmpxchg_user() in update_l1e().
According to the the comments in the source, this is due to a page fault
caused by the update.

The error looks like this:

(XEN) DOM5: (file=memory.c, line=670) Failed to update 08fe6065 ->
08fe6465: saw 08fe6065
DOM5: Failed update VA mapping: 000bffff, 08fe6465, 00000002

The odd value is due to a special use of one of the AVL bits for my own
purposes.

This only happens when page_nr is 000bffff for some reason.

Any ideas what may be going wrong here?

thanks,
Jacob



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             reply	other threads:[~2004-04-13 13:00 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-04-13 13:00 Jacob Gorm Hansen [this message]
2004-04-13 13:47 ` Failure in update_l1e() Keir Fraser

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