On Thu, Jan 24, 2013 at 01:17:53PM -0600, [email protected] wrote: > From: Suravee Suthikulpanit <[email protected]> > > The IOMMU may stop processing page translations due to a perceived lack > of credits for writing upstream peripheral page service request (PPR) > or event logs. If the L2B miscellaneous clock gating feature is enabled > the IOMMU does not properly register credits after the log request has > completed, leading to a potential system hang. > > BIOSes are supposed to disable L2B micellaneous clock gating by setting > L2_L2B_CK_GATE_CONTROL[CKGateL2BMiscDisable](D0F2xF4_x90[2]) = 1b. This > patch corrects that for those which do not enable this workaround. > > Signed-off-by: Suravee Suthikulpanit <[email protected]>
Acked-by: Borislav Petkov <[email protected]> Thanks for the good work. -- Regards/Gruss, Boris. Sent from a fat crate under my desk. Formatting is fine. -- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
