Date: Sun, 09 Sep 2001 03:31:48 +0200 From: Tor.Egge@fast.no To: michael_class@gmx.net, michaelc@space.ebiz-hp.com Cc: current@FreeBSD.ORG Subject: Re: boot() called on cpu #1 - hang Message-ID: <200109090131.DAA16278@midten.fast.no> In-Reply-To: Your message of "Sat, 8 Sep 2001 18:21:33 %2B0200 (MEST)" References: <20010908181649.G894-100000@localhost>
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> Hello,
>
> on a 5.0-current i386-SMP system of today I am still getting on about
> every second reboot the message:
>
> boot() called on cpu #1
> W
Try applying the enclosed patch.
- Tor Egge
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Index: vm_machdep.c
===================================================================
RCS file: /home/ncvs/src/sys/i386/i386/vm_machdep.c,v
retrieving revision 1.169
diff -u -r1.169 vm_machdep.c
--- vm_machdep.c 4 Sep 2001 08:36:46 -0000 1.169
+++ vm_machdep.c 4 Sep 2001 19:58:38 -0000
@@ -424,8 +433,13 @@
{
cpu_reset_proxy_active = 1;
+ wbinvd();
while (cpu_reset_proxy_active == 1)
; /* Wait for other cpu to see that we've started */
+ cpu_reset_proxy_active = 3;
+ wbinvd();
+ while (cpu_reset_proxy_active == 3)
+ ; /* Wait for other cpu to enable interrupts */
stop_cpus((1<<cpu_reset_proxyid));
printf("cpu_reset_proxy: Stopped CPU %d\n", cpu_reset_proxyid);
DELAY(1000000);
@@ -463,6 +477,7 @@
cpu_reset_proxyid = PCPU_GET(cpuid);
cpustop_restartfunc = cpu_reset_proxy;
cpu_reset_proxy_active = 0;
+ wbinvd();
printf("cpu_reset: Restarting BSP\n");
started_cpus = (1<<0); /* Restart CPU #0 */
@@ -471,9 +486,19 @@
cnt++; /* Wait for BSP to announce restart */
if (cpu_reset_proxy_active == 0)
printf("cpu_reset: Failed to restart BSP\n");
- enable_intr();
+ disable_intr();
cpu_reset_proxy_active = 2;
-
+ wbinvd();
+ cnt = 0;
+ while (cpu_reset_proxy_active == 2 && cnt < 10000000)
+ cnt++; /* Wait for BSP to stop APs */
+ if (cpu_reset_proxy_active == 2) {
+ printf("cpu_reset: BSP did not stop APs\n");
+ cpu_reset_real();
+ }
+ cpu_reset_proxy_active = 4;
+ wbinvd();
+ enable_intr();
while (1);
/* NOTREACHED */
}
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