Date: Wed, 09 Nov 2016 18:12:36 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-virtualization@FreeBSD.org Subject: [Bug 203682] Slow boot under VMware Fusion w/ UEFI firmware and SMP -- until APs are launched Message-ID: <bug-203682-27103-MiIkrW67R2@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-203682-27103@https.bugs.freebsd.org/bugzilla/> References: <bug-203682-27103@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D203682 --- Comment #8 from John Baldwin <jhb@FreeBSD.org> --- The problem with monitor/mwait is that it has to be emulated by the hypervi= sor (you get a VM-exit for it), but that's actually hard to do because the hypervisor can't tell when the relevant line is going to be updated (I'm pr= etty sure that bhyve just returns immediately from mwait for example). We can however put the APs to sleep while spinning on aps_ready via hlt and use an= IPI to resume them. This should work with most if not all hypervisors. That s= aid, I do plan to enable EARLY_AP_STARTUP in 12 anyway (perhaps I'll do it at the vendor summit later this week). --=20 You are receiving this mail because: You are the assignee for the bug.=
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