Sorry, forgot the attachment.
--jyh
>-----Original Message-----
>From: Jiang, Yunhong
>Sent: Wednesday, June 09, 2010 10:32 PM
>To: Keir Fraser
>Cc: xen-devel; Christoph Egger
>Subject: [PATCH 6/6] Dump the MCE information in mc_panic and softirq
>
>Dump the MCE information in mc_panic and softirq
>
>We should not dump the mcinfo in mce handler, instead, we should do that in
>mc_panic for fatal error or softirq for other errors.
>
>Signed-off-by: Jiang, Yunhong <yunhong.jiang@xxxxxxxxx>
>
> mce.c | 24 ++++++++++++++++++++++++
> mce_intel.c | 7 +++----
>
>diff -r 898279853894 xen/arch/x86/cpu/mcheck/mce.c
>--- a/xen/arch/x86/cpu/mcheck/mce.c Wed Jun 09 21:09:24 2010 +0800
>+++ b/xen/arch/x86/cpu/mcheck/mce.c Wed Jun 09 21:32:32 2010 +0800
>@@ -1509,15 +1509,39 @@ long do_mca(XEN_GUEST_HANDLE(xen_mc_t) u
> return ret;
> }
>
>+int mcinfo_dumpped;
>+static int x86_mcinfo_dump_panic(mctelem_cookie_t mctc)
>+{
>+ struct mc_info *mcip = mctelem_dataptr(mctc);
>+
>+ x86_mcinfo_dump(mcip);
>+ mcinfo_dumpped++;
>+
>+ return 0;
>+}
>+
>+/* XXX shall we dump commited mc_info?? */
>+static void mc_panic_dump(void)
>+{
>+ int cpu;
>+
>+ dprintk(XENLOG_ERR, "Begin dump mc_info\n");
>+ for_each_online_cpu(cpu)
>+ mctelem_process_deferred(cpu, x86_mcinfo_dump_panic);
>+ dprintk(XENLOG_ERR, "End dump mc_info, %x mcinfo dumped\n",
>mcinfo_dumpped);
>+}
>+
> void mc_panic(char *s)
> {
> is_mc_panic = 1;
> console_force_unlock();
>+
> printk("Fatal machine check: %s\n", s);
> printk("\n"
> "****************************************\n"
> "\n"
> " The processor has reported a hardware error which cannot\n"
> " be recovered from. Xen will now reboot the machine.\n");
>+ mc_panic_dump();
> panic("HARDWARE ERROR");
> }
>diff -r 898279853894 xen/arch/x86/cpu/mcheck/mce_intel.c
>--- a/xen/arch/x86/cpu/mcheck/mce_intel.c Wed Jun 09 21:09:24 2010 +0800
>+++ b/xen/arch/x86/cpu/mcheck/mce_intel.c Wed Jun 09 21:23:08 2010 +0800
>@@ -257,6 +257,8 @@ static int mce_delayed_action(mctelem_co
> switch (result)
> {
> case MCER_RESET:
>+ dprintk(XENLOG_ERR, "MCE delayed action failed\n");
>+ x86_mcinfo_dump(mctelem_dataptr(mctc));
> panic("MCE: Software recovery failed for the UCR\n");
> break;
> case MCER_RECOVERED:
>@@ -266,6 +268,7 @@ static int mce_delayed_action(mctelem_co
> case MCER_CONTINUE:
> dprintk(XENLOG_INFO, "MCE: Error can't be recovered, "
> "system is tainted\n");
>+ x86_mcinfo_dump(mctelem_dataptr(mctc));
> ret = 1;
> break;
> default:
>@@ -755,10 +758,6 @@ static void intel_machine_check(struct c
> mctc = mcheck_mca_logout(MCA_MCE_SCAN, mca_allbanks, &bs,
>clear_bank);
>
> if (bs.errcnt) {
>- /* dump MCE error */
>- if (mctc != NULL)
>- x86_mcinfo_dump(mctelem_dataptr(mctc));
>-
> /*
> * Uncorrected errors must be dealth with in softirq context.
> */
>
mca_dump.patch
Description: mca_dump.patch
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