[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] RE: Bug in CS 20073
Keir Fraser wrote: > On 21/08/2009 13:03, "Stephen Smalley" <sds@xxxxxxxxxxxxx> wrote: > >> On Thu, 2009-08-20 at 17:02 +0100, Keir Fraser wrote: >>> Looks like a lock normally taken with irqs disabled may be being >>> taken with irqs enabled. Which wouldn't be allowed but could be >>> easy to fix. >> >> This appears to have been introduced by CS 20073, x86: Implement >> per-cpu vector for xen hypervisor. It introduces mixed usage of >> spin_lock() and spin_lock_irqsave() on the vector_lock, whereas >> previously it was always spin_lock_irqsave(). > > Xiantao, Can you make a patch for this? Any acquisition of the lock > where irqs may not already be disabled must do spin_lock_irq or > spin_lock_irqsave. Yes, I will work out a fix for that. :) Xiantao _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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