Date: Tue, 14 Jul 2015 16:55:29 +0300 From: Andriy Gapon <avg@FreeBSD.org> To: "freebsd-virtualization@freebsd.org" <freebsd-virtualization@FreeBSD.org> Subject: Re: bhyve: centos 7.1 with multiple virtual processors Message-ID: <55A514D1.7040805@FreeBSD.org> In-Reply-To: <55891335.5090403@FreeBSD.org> References: <5587EE05.2020001@FreeBSD.org> <CAFgRE9Hpxm7pC_ETdQJKNk7FwbGvYjd60D0bnoOC=t46aJvusQ@mail.gmail.com> <558900A7.40609@FreeBSD.org> <CAFgRE9E5uTDUomaibL6jmxNwGJnz2RXiGxLDNoKkQ=%2BRBsh69A@mail.gmail.com> <55891335.5090403@FreeBSD.org>
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On 23/06/2015 11:05, Andriy Gapon wrote: > On 23/06/2015 10:26, Neel Natu wrote: [snip] >> Does this ever happen with a single vcpu guest? > > Never seen the problem with a single CPU so far. > Also, never had that problem with FreeBSD guests. > >> The other mystery is the NMIs the host is receiving. I (re)verified to >> make sure that bhyve/vmm.ko do not assert NMIs so it has to be >> something else on the host that's doing it ... > > But the correlation with the multi-CPU non-FreeBSD guests seems to be significant. Today I've got another NMI with a Linux guest, but a few things were different: - the host was fresh after a reboot - the guest was single CPU - the NMI happened during boot up of the very first VM kernel: NMI ISA 2c, EISA ff kernel: NMI ... going to debugger Not what causes those NMIs but when they happen they always happen during a bhyve guest boot... -- Andriy Gapon
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