From: Michael Tokarev <mjt@tls.msk.ru>
To: kvm-devel <kvm@vger.kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Subject: Re: kvm: zapping shadow pages for mmio generation wraparound
Date: Sun, 21 Dec 2014 09:28:04 +0300 [thread overview]
Message-ID: <54966874.50306@msgid.tls.msk.ru> (raw)
In-Reply-To: <51ED9CC0.9070405@bitsync.net>
On Tue, 23 Jul 2013 13:50:21 +0200, Paolo Bonzini wrote:
...
> > Jul 21 00:25:32 ps kernel: kvm: zapping shadow pages for mmio generation
> > wraparound
>
> The log message would let us correlate any reports with a new
> optimization (added in 3.11). We will probably downgrade it to
> KERN_DEBUG before 3.11 goes out (or otherwise cause it to disappear), in
> the meanwhile it's harmless.
Hm. I just upgraded one of our heavy-kvm-usage host from 3.10 to 3.16,
and it started showing these messages (hence I started searching and
found this thread from 2013).
Has it not been decided to downgrade this message to KERN_DEBUG for some
reason?
What does this message mean anyway?
Why this very rare case (according to comments in arch/x86/kvm/mmu.c)
happens on this machine?
Thanks,
/mjt
next prev parent reply other threads:[~2014-12-21 6:28 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-22 20:57 kvm: zapping shadow pages for mmio generation wraparound Zlatko Calusic
2013-07-23 11:50 ` Paolo Bonzini
2013-07-23 12:35 ` Zlatko Calusic
2014-12-21 6:28 ` Michael Tokarev [this message]
2014-12-21 16:13 ` Paolo Bonzini
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