Re: [PATCH v3 17/18] x86/kvm/tsc: Drop extra barrier and use rdtsc_ordered in kvmclock

From: Paolo Bonzini
Date: Wed Jun 17 2015 - 09:31:45 EST

On 17/06/2015 09:47, Paolo Bonzini wrote:
> On 17/06/2015 02:36, Andy Lutomirski wrote:
>> __pvclock_read_cycles had an unnecessary barrier. Get rid of that
>> barrier and clean up the code by just using rdtsc_ordered().
>> Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx>
>> Cc: Radim Krcmar <rkrcmar@xxxxxxxxxx>
>> Cc: Marcelo Tosatti <mtosatti@xxxxxxxxxx>
>> Cc: kvm@xxxxxxxxxxxxxxx
>> Signed-off-by: Andy Lutomirski <luto@xxxxxxxxxx>
>> ---
>> I'm hoping to get an ack for this to go in through -tip. (Arguably
>> I'm the maintainer of this code given how it's used, but I should
>> still ask for an ack.)
>> arch/x86/include/asm/pvclock.h | 21 ++++++++++++---------
>> 1 file changed, 12 insertions(+), 9 deletions(-)
> Can you send a URL to the rest of the series? I've never even seen v1
> or v2 so I have no idea of what this is about.

Ah, it was sent to the KVM list, just not CCed to me. :)

Sorry, that's what you get when your unread message count does not fit
in three digits anymore.

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