Messages in this thread |  | | Date | Thu, 23 Nov 2017 07:58:28 +0100 | From | Ingo Molnar <> | Subject | Re: [PATCH v2 00/18] Entry stack switching |
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* Ingo Molnar <mingo@kernel.org> wrote:
> > * Ingo Molnar <mingo@kernel.org> wrote: > > > > Anyway, I booted your config (more or less -- I munged it through > > > virtme-configkernel --update first) with 17 vCPUs and it seems fine. > > > Is the issue reliable enough to bisect? > > > > Ok, it should be bisectable, will try to bisect it. > > The latestest entry-stack code appears to be working fine though. > > So one of the below fixes from yesterday appears to have done the trick. > > I'll re-test today to make sure: maybe it's more sporadic than I thought, in one > of the bootups I got the do_IRQ warning only once, in half a day of uptime.
I re-tested and it all seems fine now. I suspect it got fixed by:
ca37e57bbe0c: x86/entry/64: Add missing irqflags tracing to native_load_gs_index()
still it is weird, because I boot that system with latest -tip on a daily basis, and don't remember having seen that warning.
Do you have any theory for why the entry stack changes would uncover this bug?
Thanks,
Ingo
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