From: Paolo Bonzini <pbonzini@redhat.com>
To: Peter Zijlstra <peterz@infradead.org>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: mingo@kernel.org, kvm@vger.kernel.org, x86@kernel.org,
linux-kernel@vger.kernel.org, Waiman.Long@hpe.com,
dhowells@redhat.com, david.vrabel@citrix.com,
xen-devel@lists.xenproject.org
Subject: Re: [Xen-devel] [PATCH] x86, locking: Remove ticket (spin)lock implementation
Date: Thu, 19 May 2016 12:52:57 +0200 [thread overview]
Message-ID: <f1fda228-6c5b-74a8-9157-c7bfde8d4fc3@redhat.com> (raw)
In-Reply-To: <20160518193431.GQ3193@twins.programming.kicks-ass.net>
On 18/05/2016 21:34, Peter Zijlstra wrote:
>> I don't know of any enterprise distro that is shipping anything
>> > more modern than 4.1?
> RHEL 7 -- v3.10
> SLES 12 -- v3.12
> Debian Jessie -- v3.16
> Ubuntu 16.04 LTS -- v4.4
>
> But waiting for the major enterprise distros (RHEL/SLES) would mean
> another decade or so before people start using it. We don't usually wait
> this long for anything.
We're looking at converting a few specific spinlocks to qspinlock in
RHEL, though we cannot convert all of them due to the spin_lock_t ABI.
It won't get into customer's hands for a while of course.
Thanks,
Paolo
next prev parent reply other threads:[~2016-05-19 10:53 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-18 18:43 [PATCH] x86,locking: " Peter Zijlstra
2016-05-18 19:13 ` [Xen-devel] [PATCH] x86, locking: " Konrad Rzeszutek Wilk
2016-05-18 19:34 ` Peter Zijlstra
2016-05-19 7:16 ` Ingo Molnar
2016-05-19 10:52 ` Paolo Bonzini [this message]
2016-05-19 9:07 ` [PATCH] x86,locking: " David Vrabel
2016-09-30 12:00 ` [tip:locking/core] x86, locking/spinlocks: " tip-bot for Peter Zijlstra
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