Messages in this thread | | | From | Dmitry Safonov <> | Date | Thu, 29 Mar 2018 14:52:41 +0100 | Subject | Re: [PATCHv3] iommu/intel: Ratelimit each dmar fault printing |
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2018-03-29 9:50 GMT+01:00 Joerg Roedel <joro@8bytes.org>: > On Tue, Mar 20, 2018 at 08:50:13PM +0000, Dmitry Safonov wrote: >> Hmm, but this fixes my softlockup issue, because it's about time spent >> in printk() inside irq-disabled section, rather about exiting the dmar- >> clearing loop. >> And on my hw doesn't make any difference to limit loop or not because >> clearing a fault is much faster than hw could generate a new fault. >> ITOW, it fixes the softlockup for me and the loop-related lockup can't >> happen on hw I have (so it's the other issue, [possible?] on other hw). > > It might solve your issue, but someone else might still run into it with > a different setup. An upstream fix needs to solve it for everyone.
Ok, I'll resend v4 with an additional patch to limit the loop.
Thanks, Dmitry
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