Date: Sat, 03 Jan 2026 22:33:02 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 292167] occasional SMP APs not starting on ppc64 guests Message-ID: <bug-292167-227-xJQJL3tQyf@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-292167-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=292167 --- Comment #2 from Adrian Chadd <adrian@freebsd.org> --- Chatting with jhibbits, it looks like the isync in sched_switch is in the wrong spot. ``` diff --git a/sys/powerpc/powerpc/swtch64.S b/sys/powerpc/powerpc/swtch64.S index 5f80751c8a10..ba37274d32bb 100644 --- a/sys/powerpc/powerpc/swtch64.S +++ b/sys/powerpc/powerpc/swtch64.S @@ -194,8 +194,8 @@ cpu_switchin: blocked_loop: ld %r7,TD_LOCK(%r13) cmpd %r6,%r7 - beq- blocked_loop isync + beq- blocked_loop #endif ld %r17,TD_PCB(%r13) /* Get new PCB */ adrian@test-3:/data/1/adrian/freebsd/freebsd-src-ppc64/sys/powerpc % ``` This seems to fix it. 11 successful boots so far. i'll put up a review. -- You are receiving this mail because: You are the assignee for the bug.home | help
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