Re: SMP + APM = panic - fixed!
Hi, On Wed, 7 Jun 2000, Mitsuru IWASAKI wrote: We're having this problem for long time (from the old 4.0-CURRENT days), but Mr. SUMITANI discovered a bug and fixed it. The problem was that we got worng gdt pointer for the current cpu, then panic... The followings is a patch to fix the problem. Thanks a lot, SUMITANI-san! Yes, this fixes panic and even 'halt -p' works as expected. 'zzz' OK, I think many people will be happy with poweroff on SMP system, so I'd like to commit this first. Then I'll track it down and try to fix later in order to support suspend/resume SMP system. Thanks To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message
Re: SMP + APM = panic - fixed!
On Wed, Jun 07, 2000 at 02:06:15AM +0900, Mitsuru IWASAKI wrote: We're having this problem for long time (from the old 4.0-CURRENT days), but Mr. SUMITANI discovered a bug and fixed it. The problem was that we got worng gdt pointer for the current cpu, then panic... The followings is a patch to fix the problem. Thanks a lot, SUMITANI-san! Please test this and I'll commit MFC this if we have no problem with this fix. I don't have an SMP + APM system around at the moment, but the fix does look correct to me, go ahead and commit it. Thanks for tracking this down! -- Jonathan To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message
Re: SMP + APM = panic - fixed!
Please test this and I'll commit MFC this if we have no problem with this fix. I don't have an SMP + APM system around at the moment, but the fix does look correct to me, go ahead and commit it. Thanks for tracking this down! Thank you for reviewing this. I'm going to comit tomorrow night (JST), then MFC on early next week if no problems are reported. Thanks To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message
Re: SMP + APM = panic - fixed!
On Wed, 7 Jun 2000, Mitsuru IWASAKI wrote: We're having this problem for long time (from the old 4.0-CURRENT days), but Mr. SUMITANI discovered a bug and fixed it. The problem was that we got worng gdt pointer for the current cpu, then panic... The followings is a patch to fix the problem. Thanks a lot, SUMITANI-san! Yes, this fixes panic and even 'halt -p' works as expected. 'zzz' command works too, but machine never come back from the suspend mode (looks like interrupt controller programmed incorrectly or something like this). -- Boris Popov http://www.butya.kz/~bp/ To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message
Re: SMP APM
Hi, Has anyone tried having APM and SMP in the same kernel? It panic()'s mine :) Basically the machine panics a few seconds after I do 'apmconf -e'. apm seems to return normal values though. I've attached a sample output from APM, dmesg and my kernel config. I get a trap 12: page fault in kernel mode mp_lock = 0109; cpuid = 1; lapic.id = 0100 fault virtual address = 0x75f0 fault code = supervisor read, page not present interrupt pointer = 0x8:0xc0208a4c stack pointer = 0x10:0xff80dd78 frame pointer = 0x10:0xff80dd7c code segment = base 0x0, limit 0xf, type 0x1b DPL 0, pres 1, def32 1, gran 1 processor eflags = interrupt enabled, resume, IOPL = 0 current process = Idle interrupt mask =- SMP: XXX Also, nm kernel.debug | sort shows that 0xc0208a4c is in Xbpt Are you sure it's in Xbpt? Xbpt has only 6 lines of code and none of them is likely to generate a page fault. What's the address of symbol Xbpt? --- Daniel O'Connor software and network engineer for Genesis Software - http://www.gsoft.com.au The nice thing about standards is that there are so many of them to choose from. -- Andrew Tanenbaum -lq To Unsubscribe: send mail to majord...@freebsd.org with unsubscribe freebsd-current in the body of the message
Re: SMP APM
On 05-May-99 Luoqi Chen wrote: Also, nm kernel.debug | sort shows that 0xc0208a4c is in Xbpt Are you sure it's in Xbpt? Xbpt has only 6 lines of code and none of them is likely to generate a page fault. What's the address of symbol Xbpt? Yeah, well, it didn't look likely to me either but.. :-/ Here is part of nm kernel.debug | sort ... c0208a30 T Xnmi c0208a3c T Xbpt c0208a50 T Xofl ... I'll give it another bash and see how goes.. Unfortunatly I can't get crash dumps. I should be able to get a null modem cable tomorrow, so I can try a serial console and remote gdb. --- Daniel O'Connor software and network engineer for Genesis Software - http://www.gsoft.com.au The nice thing about standards is that there are so many of them to choose from. -- Andrew Tanenbaum To Unsubscribe: send mail to majord...@freebsd.org with unsubscribe freebsd-current in the body of the message
Re: SMP APM
Yeah, well, it didn't look likely to me either but.. :-/ Here is part of nm kernel.debug | sort ... c0208a30 T Xnmi c0208a3c T Xbpt c0208a50 T Xofl ... Did you actually boot from kernel.debug? If not, use the kernel you booted from, the symbols should still be there. I'll give it another bash and see how goes.. Unfortunatly I can't get crash dumps. I should be able to get a null modem cable tomorrow, so I can try a serial console and remote gdb. --- Daniel O'Connor software and network engineer for Genesis Software - http://www.gsoft.com.au The nice thing about standards is that there are so many of them to choose from. -- Andrew Tanenbaum -lq PS: `nm -n' sorts the output by address. To Unsubscribe: send mail to majord...@freebsd.org with unsubscribe freebsd-current in the body of the message
Re: SMP APM
Hi,
Has anyone tried having APM and SMP in the same kernel? It panic()'s mine :)
Basically the machine panics a few seconds after I do 'apmconf -e'. apm seems
to return normal values though.
I've attached a sample output from APM, dmesg and my kernel config.
I get a trap 12: page fault in kernel mode
mp_lock = 0109; cpuid = 1; lapic.id = 0100
fault virtual address = 0x75f0
fault code = supervisor read, page not present
interrupt pointer = 0x8:0xc0208a4c
stack pointer = 0x10:0xff80dd78
frame pointer = 0x10:0xff80dd7c
code segment = base 0x0, limit 0xf, type 0x1b
DPL 0, pres 1, def32 1, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = Idle
interrupt mask =- SMP: XXX
Also, nm kernel.debug | sort shows that 0xc0208a4c is in Xbpt
---
Daniel O'Connor software and network engineer
for Genesis Software - http://www.gsoft.com.au
The nice thing about standards is that there
are so many of them to choose from.
-- Andrew Tanenbaum
My SMP vm sharing commit broke APM. Please try out this patch,
Index: apm.c
===
RCS file: /home/ncvs/src/sys/i386/apm/apm.c,v
retrieving revision 1.80
diff -u -r1.80 apm.c
--- apm.c 1999/04/21 07:57:55 1.80
+++ apm.c 1999/05/05 15:44:48
@@ -20,6 +20,7 @@
#include opt_devfs.h
#include opt_vm86.h
+#include opt_smp.h
#include sys/param.h
#include sys/conf.h
@@ -45,6 +46,10 @@
#include machine/vm86.h
#endif
+#ifdef SMP
+#include machine/smp.h
+#endif
+
static int apm_display __P((int newstate));
static int apm_int __P((u_long *eax, u_long *ebx, u_long *ecx, u_long *edx));
static void apm_resume __P((void));
@@ -92,6 +97,10 @@
static void
setup_apm_gdt(u_int code32_base, u_int code16_base, u_int data_base, u_int
code32_limit, u_int code16_limit, u_int data_limit)
{
+#ifdef SMP
+ int x;
+#endif
+
/* setup 32bit code segment */
gdt_segs[GAPMCODE32_SEL].ssd_base = code32_base;
gdt_segs[GAPMCODE32_SEL].ssd_limit = code32_limit;
@@ -108,6 +117,14 @@
ssdtosd(gdt_segs + GAPMCODE32_SEL, gdt[GAPMCODE32_SEL].sd);
ssdtosd(gdt_segs + GAPMCODE16_SEL, gdt[GAPMCODE16_SEL].sd);
ssdtosd(gdt_segs + GAPMDATA_SEL , gdt[GAPMDATA_SEL ].sd);
+
+#ifdef SMP
+ for (x = 1; x mp_ncpus; x++) {
+ gdt[x * NGDT + GAPMCODE32_SEL].sd = gdt[GAPMCODE32_SEL].sd;
+ gdt[x * NGDT + GAPMCODE16_SEL].sd = gdt[GAPMCODE16_SEL].sd;
+ gdt[x * NGDT + GAPMDATA_SEL ].sd = gdt[GAPMDATA_SEL ].sd;
+ }
+#endif
}
/* 48bit far pointer. Do not staticize - used from apm_setup.s */
-lq
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Re: SMP APM
On 05-May-99 Luoqi Chen wrote: Also, nm kernel.debug | sort shows that 0xc0208a4c is in Xbpt Are you sure it's in Xbpt? Xbpt has only 6 lines of code and none of them is likely to generate a page fault. What's the address of symbol Xbpt? Yeah, well, it didn't look likely to me either but.. :-/ Here is part of nm kernel.debug | sort ... c0208a30 T Xnmi c0208a3c T Xbpt c0208a50 T Xofl ... I'll give it another bash and see how goes.. Unfortunatly I can't get crash dumps. I should be able to get a null modem cable tomorrow, so I can try a serial console and remote gdb. I wonder if there are problems running the APM requests on an AP? Daniel, are you running with the most recent MTRR/SMP fixes? -- \\ Sometimes you're ahead, \\ Mike Smith \\ sometimes you're behind. \\ m...@smith.net.au \\ The race is long, and in the \\ msm...@freebsd.org \\ end it's only with yourself. \\ msm...@cdrom.com To Unsubscribe: send mail to majord...@freebsd.org with unsubscribe freebsd-current in the body of the message
Re: SMP APM
On 05-May-99 Luoqi Chen wrote: My SMP vm sharing commit broke APM. Please try out this patch, That patch seems to have fixed it! Great stuff :) --- Daniel O'Connor software and network engineer for Genesis Software - http://www.gsoft.com.au The nice thing about standards is that there are so many of them to choose from. -- Andrew Tanenbaum To Unsubscribe: send mail to majord...@freebsd.org with unsubscribe freebsd-current in the body of the message
