x86, vt-d: Handle previous faults after enabling fault handling
commit 7f99d946 upstream. Fault handling is getting enabled after enabling the interrupt-remapping (as the success of interrupt-remapping can affect the apic mode and hence the fault handling mode). Hence there can potentially be some faults between the window of enabling interrupt-remapping in the vt-d and the fault-handling of the vt-d units. Handle any previous faults after enabling the vt-d fault handling. For v2.6.38 cleanup, need to check if we can remove the dmar_fault() in the enable_intr_remapping() and see if we can enable fault handling along with enabling intr-remapping. Signed-off-by:Suresh Siddha <suresh.b.siddha@intel.com> LKML-Reference: <20101201062244.630417138@intel.com> Acked-by:
Chris Wright <chrisw@sous-sol.org> Signed-off-by:
H. Peter Anvin <hpa@linux.intel.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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