On March 11, 2016 8:24am, <Tian, Kevin> wrote: > > From: Xu, Quan > > Sent: Thursday, March 10, 2016 10:10 PM > > > > pcidevs_lock doesn't require interrupts to be disabled while being acquired. > > However there remains an exception in AMD IOMMU code, where the lock > > is acquired with interrupt disabled. This inconsistency might lead to > > deadlock. > > > > The fix is straightforward to use spin_lock instead. Also interrupt > > has been enabled when this function is invoked, so we're sure > > consistency around pcidevs_lock can be guaranteed after this fix. > > > > Signed-off-by: Quan Xu <quan...@intel.com> > > Reviewed-by: Dario Faggioli <dario.faggi...@citrix.com> > > CC: Suravee Suthikulpanit <suravee.suthikulpa...@amd.com> > > CC: Dario Faggioli <dario.faggi...@citrix.com> > > CC: Jan Beulich <jbeul...@suse.com> > > CC: Kevin Tian <kevin.t...@intel.com> > > Reviewed-by: Kevin Tian <kevin.t...@intel.com>
Kevin, thanks!! Quan _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
