Re: [Xen-devel] Re: [PATCH] C6 state with EOI issue fix for some Intel processors

[Andreas Kinzler <ml-xen-devel@xxxxxx>]

On 15.09.2010 10:03, Keir Fraser wrote:
> > This patch fix this issue, by checking if ISR is pending before enter deep Cx
> > state. If so, it would use power->safe_state instead of deep Cx state to
> > prevent
> > the above issue happen.
> Thanks. I reworked this patch substantially and applied as
> xen-unstable:22160 and xen-4.0-testing:21348.
I tested the patch on vanilla 4.0.1 and it does help a bit. Uptime was 
now over 100 minutes instead of under 3 minutes. But problems still 
occurred (aacraid reset, eth reset).
With my patch from 
(http://lists.xensource.com/archives/html/xen-devel/2010-09/msg00556.html) 
the machine uptime was over 10 days when I stopped the test.
Regards Andreas

Sep 15 14:55:19 virt kernel: ------------[ cut here ]------------
Sep 15 14:55:19 virt kernel: WARNING: at net/sched/sch_generic.c:261 
dev_watchdog+0x220/0x230()
Sep 15 14:55:19 virt kernel: Hardware name: X8SIL
Sep 15 14:55:19 virt kernel: NETDEV WATCHDOG: peth0 (e1000e): transmit 
queue 0 timed out
Sep 15 14:55:19 virt kernel: Modules linked in: bridge stp llc 
iptable_filter xt_MARK xt_mark xt_iprange xt_conntrack nf_conntrack 
ip_tables x_tables tun loop e1000e
Sep 15 14:55:19 virt kernel: Pid: 4088, comm: blkback.1.hdc Not tainted 
2.6.32.18-pvops0-ak3 #1
Sep 15 14:55:19 virt kernel: Call Trace:
Sep 15 14:55:19 virt kernel: <IRQ>  [<ffffffff810458f6>] 
warn_slowpath_common+0x76/0xb0
Sep 15 14:55:19 virt kernel: [<ffffffff8104598c>] 
warn_slowpath_fmt+0x3c/0x40
Sep 15 14:55:19 virt kernel: [<ffffffff812f1b70>] dev_watchdog+0x220/0x230
Sep 15 14:55:19 virt kernel: [<ffffffff81050820>] ? mod_timer+0x110/0x180
Sep 15 14:55:19 virt kernel: [<ffffffff81091c40>] ? 
sync_supers_timer_fn+0x0/0x20
Sep 15 14:55:19 virt kernel: [<ffffffff812f1950>] ? dev_watchdog+0x0/0x230
Sep 15 14:55:19 virt kernel: [<ffffffff810502fc>] 
run_timer_softirq+0x14c/0x230
Sep 15 14:55:19 virt kernel: [<ffffffff8104b72f>] __do_softirq+0xaf/0x140
Sep 15 14:55:19 virt kernel: [<ffffffff811c5c09>] ? 
__xen_evtchn_do_upcall+0x219/0x230
Sep 15 14:55:19 virt kernel: [<ffffffff8101357c>] call_softirq+0x1c/0x30
Sep 15 14:55:19 virt kernel: [<ffffffff81015675>] do_softirq+0x65/0xa0
Sep 15 14:55:19 virt kernel: [<ffffffff8104b3fd>] irq_exit+0x8d/0x90
Sep 15 14:55:19 virt kernel: [<ffffffff811c5cdd>] 
xen_evtchn_do_upcall+0x3d/0x60
Sep 15 14:55:19 virt kernel: [<ffffffff810135ce>] 
xen_do_hypervisor_callback+0x1e/0x30
Sep 15 14:55:19 virt kernel: <EOI>  [<ffffffff8100922a>] ? 
hypercall_page+0x22a/0x1010
Sep 15 14:55:19 virt kernel: [<ffffffff8100922a>] ? 
hypercall_page+0x22a/0x1010
Sep 15 14:55:19 virt kernel: [<ffffffff8100ed7d>] ? 
xen_force_evtchn_callback+0xd/0x10
Sep 15 14:55:19 virt kernel: [<ffffffff8100f712>] ? check_events+0x12/0x20
Sep 15 14:55:19 virt kernel: [<ffffffff8100f6b9>] ? 
xen_irq_enable_direct_end+0x0/0x7
Sep 15 14:55:19 virt kernel: [<ffffffff8135e9dd>] ? 
_spin_unlock_irq+0xd/0x40
Sep 15 14:55:19 virt kernel: [<ffffffff81151955>] ? 
generic_unplug_device+0x35/0x40
Sep 15 14:55:19 virt kernel: [<ffffffff811cf456>] ? unplug_queue+0x26/0x50
Sep 15 14:55:19 virt kernel: [<ffffffff811d001e>] ? 
blkif_schedule+0xde/0x320
Sep 15 14:55:19 virt kernel: [<ffffffff8105c530>] ? 
autoremove_wake_function+0x0/0x40
Sep 15 14:55:19 virt kernel: [<ffffffff8135ea42>] ? 
_spin_unlock_irqrestore+0x32/0x40
Sep 15 14:55:19 virt kernel: [<ffffffff811cff40>] ? blkif_schedule+0x0/0x320
Sep 15 14:55:19 virt kernel: [<ffffffff8105c24e>] ? kthread+0x8e/0xa0
Sep 15 14:55:19 virt kernel: [<ffffffff8101347a>] ? child_rip+0xa/0x20
Sep 15 14:55:19 virt kernel: [<ffffffff81012626>] ? 
int_ret_from_sys_call+0x7/0x1b
Sep 15 14:55:19 virt kernel: [<ffffffff81012de1>] ? 
retint_restore_args+0x5/0x6
Sep 15 14:55:19 virt kernel: [<ffffffff81013470>] ? child_rip+0x0/0x20
Sep 15 14:55:19 virt kernel: ---[ end trace 6548e737c4c22ec9 ]---
Sep 15 14:55:19 virt kernel: e1000e 0000:04:00.0: peth0: Reset adapter
Sep 15 14:55:19 virt kernel: eth0: port 1(peth0) entering disabled state
Sep 15 14:55:19 virt kernel: e1000e 0000:04:00.0: peth0: Reset adapter
Sep 15 14:55:22 virt kernel: e1000e: peth0 NIC Link is Up 1000 Mbps Full 
Duplex, Flow Control: None
Sep 15 14:55:22 virt kernel: eth0: port 1(peth0) entering forwarding state
Sep 15 15:16:29 virt kernel: hrtimer: interrupt took 10082426 ns
Sep 15 15:24:06 virt kernel: aacraid: Host adapter abort request (0,0,1,0)
Sep 15 15:24:06 virt kernel: aacraid: Host adapter abort request (0,0,1,0)
Sep 15 15:24:06 virt kernel: aacraid: Host adapter reset request. SCSI 
hang ?
Sep 15 15:24:06 virt kernel: e1000e 0000:04:00.0: peth0: Reset adapter
Sep 15 15:24:06 virt kernel: eth0: port 1(peth0) entering disabled state
Sep 15 15:24:06 virt kernel: e1000e 0000:04:00.0: peth0: Reset adapter
Sep 15 15:24:09 virt kernel: e1000e: peth0 NIC Link is Up 1000 Mbps Full 
Duplex, Flow Control: None
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