Date: Sat, 20 Apr 2019 03:06:28 +0000 From: bugzilla-noreply@freebsd.org To: ppc@FreeBSD.org Subject: [Bug 233863] r345425 on PowerMac G5 may require kern.smp.disabled=1 and must set usefdt=1 which causes net interface reorder Message-ID: <bug-233863-21-Rugtzxf3LS@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-233863-21@https.bugs.freebsd.org/bugzilla/> References: <bug-233863-21@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D233863 --- Comment #17 from Mark Millard <marklmi26-fbsd@yahoo.com> --- Created attachment 203812 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D203812&action= =3Dedit Investigatory sys/powerpc/powerpc/mp_machdep.c patch to avoid stuck-sleeping problem So far in preliminary testing on the PowerMac11,2, avoiding the hardware priority change from "or 31,31,31" use when looping to find ap_letgo changed has avoided my hack reporting any cases of applying the workaround. (Nor does the code now do a "or 6,6,6" to put back the orginal hardware priority.) I changed things to be more like sequentially consistent handling and made the bsp slightly more like the APs in hopes of getting more similar timing to when platform_smp_timebase_sync happens. I changed code in machdep_ap_bootstrap and in cpu_mp_unleash . I've also tested a 2-socket/1-core-each 970 G5 PowerMac11,2 a little. It still booted fine and still has never reported the workaround ever having to been applied. I will build 32-bit powerpc FreeBSD and try it as well, including on a 2-socket/1-core-each 7455 G4 PowerMac3,6. I'm actually not surprised that only the multi-core context actually behaves differently for "or 31,31,31" use (setting lowest priority mode): I do not see that being something that happens across sockets but only more locally. --=20 You are receiving this mail because: You are the assignee for the bug.=
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