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    SubjectRe: [PATCH] mm/x86: Patch out arch_flush_lazy_mmu_mode() when running on bare metal
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    Sure.

    Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> wrote:

    >On Wed, Mar 20, 2013 at 08:08:45PM -0400, Josh Boyer wrote:
    >> On Wed, Mar 20, 2013 at 06:53:55AM -0700, Boris Ostrovsky wrote:
    >> >
    >> > ----- jwboyer@redhat.com wrote:
    >> >
    >> > > On Wed, Mar 13, 2013 at 09:25:44AM -0400, Boris Ostrovsky wrote:
    >> > > > On 03/01/2013 07:14 AM, Josh Boyer wrote:
    >> > > > >On Thu, Feb 28, 2013 at 04:52:20PM -0800, H. Peter Anvin
    >wrote:
    >> > > > >>On 02/28/2013 04:42 PM, Josh Boyer wrote:
    >> > > > >>>On Fri, Mar 01, 2013 at 01:36:29AM +0100, Borislav Petkov
    >wrote:
    >> > > > >>>>On Thu, Feb 28, 2013 at 04:15:45PM -0800, H. Peter Anvin
    >wrote:
    >> > > > >>>>>>I'll try to get someone to test this tomorrow.
    >> > > > >>>>Btw, you'd need to apply that other patch too
    >> > > > >>>>
    >> > > > >>>>http://marc.info/?l=xen-devel&m=136206183814547&w=2
    >> > > > >>>>
    >> > > > >>>>so that arch_flush_lazy_mmu_mode() has at least one caller
    >on
    >> > > x86_64.
    >> > > > >>>Yeah, we already have that applied. It stops crashes in xen
    >> > > > >>>environments so we pulled it in as a bugfix. Thanks though!
    >> > > > >>>
    >> > > > >>Who are "we"?
    >> > > > >Sorry, Fedora. That patch has a link to a bug in it. We
    >applied
    >> > > the
    >> > > > >patch for that bug. I'll apply Boris' patch on top and get
    >the
    >> > > same
    >> > > > >people to test it.
    >> > > >
    >> > > > Josh, have you had a chance to test this?
    >> > >
    >> > > I've tested it on bare metal for a while now. No problems
    >noticed at
    >> > > all. I've not heard back from Krishna who was testing it in the
    >Xen
    >> > > environment. Krishna?
    >> >
    >> >
    >> > Any updates?
    >>
    >> No. I've still not heard from Krishna.
    >>
    >> At this point I've tested it on bare metal quite a bit, and Konrad
    >has
    >> tested it on both bare metal and Xen. That should already cover the
    >> case Krishna was going to test anyway. I suggest we move forward and
    >> take the patch.
    >
    >Peter?
    >
    >Would you like me or Boris to clean up the two patches with the
    >appropiate Acks and send them to you?
    >>
    >> josh

    --
    Sent from my mobile phone. Please excuse brevity and lack of formatting.


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