From: Gleb Natapov <gleb@redhat.com>
To: Markus Trippelsdorf <markus@trippelsdorf.de>
Cc: Xiao Guangrong <xiaoguangrong.eric@gmail.com>,
kvm@vger.kernel.org,
Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>,
Marcelo Tosatti <mtosatti@redhat.com>,
Paolo Bonzini <pbonzini@redhat.com>,
linux-kernel@vger.kernel.org
Subject: Re: commit f8f559422b (KVM: MMU: fast invalidate all mmio sptes) causes hang
Date: Wed, 17 Jul 2013 22:28:48 +0300 [thread overview]
Message-ID: <20130717192848.GL13732@redhat.com> (raw)
In-Reply-To: <20130717190029.GA362@x4>
On Wed, Jul 17, 2013 at 09:00:29PM +0200, Markus Trippelsdorf wrote:
> > > 10346403 qemu-system-x86-1403 [001] 1451.422260: check_mmio_spte: spte ffff0000fee00e3f kvm_gen 7ffc8 spte-gen 7ffc7 valid 0
> > > ...
Can you trace only this event and record stack information:
trace-cmd record -T -e kvmmmu:check_mmio_spte
> > >
> [ 236.322519] qemu-system-x86 R running task 0 603 367 0x00000000
Is this the task that now prints check_mmio_spte ad nauseam?
> [ 236.322523] 0000000000000000 0000000100000000 00007fff27e6b950 00000000000fee00
> [ 236.322528] ffff8801df8b3b90 00000000fee000b0 ffff8801dff0b0d1 0000000000000000
> [ 236.322533] ffff8801df8b3b90 ffff8801f7614040 0000000000000000 0000000000000000
> [ 236.322537] Call Trace:
> [ 236.322544] [<ffffffff8102aea0>] ? nested_svm_get_tdp_cr3+0x20/0x20
I am assuming you are not running nested guest and this is just a glitch
in the matrix, correct?
> [ 236.322551] [<ffffffff810100b5>] ? kvm_arch_vcpu_ioctl_run+0x415/0x10c0
> [ 236.322556] [<ffffffff810e24cb>] ? page_add_new_anon_rmap+0x2b/0x100
> [ 236.322561] [<ffffffff810d8fbb>] ? handle_pte_fault+0x69b/0x7c0
> [ 236.322567] [<ffffffff8100d10a>] ? kvm_arch_vcpu_load+0x4a/0x1e0
> [ 236.322573] [<ffffffff810022b1>] ? kvm_vcpu_ioctl+0x271/0x500
> [ 236.322578] [<ffffffff811067ec>] ? do_vfs_ioctl+0x2cc/0x4a0
> [ 236.322583] [<ffffffff811069fc>] ? SyS_ioctl+0x3c/0x80
> [ 236.322588] [<ffffffff81583592>] ? system_call_fastpath+0x16/0x1b
--
Gleb.
next prev parent reply other threads:[~2013-07-17 19:28 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-17 16:32 commit f8f559422b (KVM: MMU: fast invalidate all mmio sptes) causes hang Markus Trippelsdorf
2013-07-17 16:42 ` Gleb Natapov
2013-07-17 16:57 ` Markus Trippelsdorf
2013-07-17 17:25 ` Xiao Guangrong
2013-07-17 17:34 ` Markus Trippelsdorf
2013-07-17 18:42 ` Markus Trippelsdorf
2013-07-17 18:55 ` Gleb Natapov
2013-07-17 19:00 ` Markus Trippelsdorf
2013-07-17 19:27 ` Xiao Guangrong
2013-07-17 19:38 ` Markus Trippelsdorf
2013-07-17 19:28 ` Gleb Natapov [this message]
2013-07-17 19:22 ` Xiao Guangrong
2013-07-17 19:07 ` Xiao Guangrong
2013-07-17 19:31 ` Gleb Natapov
2013-07-17 19:52 ` Xiao Guangrong
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