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From: Ingo Molnar <mingo@kernel.org>
To: Avi Kivity <avi@redhat.com>
Cc: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com>,
	Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	Jeremy Fitzhardinge <jeremy@goop.org>,
	Greg Kroah-Hartman <gregkh@suse.de>,
	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
	"H. Peter Anvin" <hpa@zytor.com>,
	Marcelo Tosatti <mtosatti@redhat.com>, X86 <x86@kernel.org>,
	Gleb Natapov <gleb@redhat.com>, Ingo Molnar <mingo@redhat.com>,
	Attilio Rao <attilio.rao@citrix.com>,
	Virtualization <virtualization@lists.linux-foundation.org>,
	Xen Devel <xen-devel@lists.xensource.com>,
	linux-doc@vger.kernel.org, KVM <kvm@vger.kernel.org>,
	Andi Kleen <andi@firstfloor.org>,
	Stefano Stabellini <stefano.stabellini@eu.citrix.com>,
	Stephan Diestelhorst <stephan.diestelhorst@amd.com>,
	LKML <linux-kernel@vger.kernel.org>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>,
	Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH RFC V8 0/17] Paravirtualized ticket spinlocks
Date: Mon, 7 May 2012 19:25:27 +0200	[thread overview]
Message-ID: <20120507172527.GA5357@gmail.com> (raw)
In-Reply-To: <4FA7E1C8.7010509@redhat.com>


* Avi Kivity <avi@redhat.com> wrote:

> > PS: Nikunj had experimented that pv-flush tlb + 
> > paravirt-spinlock is a win on PLE where only one of them 
> > alone could not prove the benefit.
> 
> I'd like to see those numbers, then.
> 
> Ingo, please hold on the kvm-specific patches, meanwhile.

I'll hold off on the whole thing - frankly, we don't want this 
kind of Xen-only complexity. If KVM can make use of PLE then Xen 
ought to be able to do it as well.

If both Xen and KVM makes good use of it then that's a different 
matter.

Thanks,

	Ingo

  parent reply	other threads:[~2012-05-07 17:25 UTC|newest]

Thread overview: 53+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-05-02 10:06 [PATCH RFC V8 0/17] Paravirtualized ticket spinlocks Raghavendra K T
2012-05-02 10:06 ` [PATCH RFC V8 1/17] x86/spinlock: Replace pv spinlocks with pv ticketlocks Raghavendra K T
2012-05-02 10:06 ` [PATCH RFC V8 2/17] x86/ticketlock: Don't inline _spin_unlock when using paravirt spinlocks Raghavendra K T
2012-05-02 10:06 ` [PATCH RFC V8 3/17] x86/ticketlock: Collapse a layer of functions Raghavendra K T
2012-05-02 10:07 ` [PATCH RFC V8 4/17] xen: Defer spinlock setup until boot CPU setup Raghavendra K T
2012-05-02 10:07 ` [PATCH RFC V8 5/17] xen/pvticketlock: Xen implementation for PV ticket locks Raghavendra K T
2012-05-02 10:07 ` [PATCH RFC V8 6/17] xen/pvticketlocks: Add xen_nopvspin parameter to disable xen pv ticketlocks Raghavendra K T
2012-05-02 10:07 ` [PATCH RFC V8 7/17] x86/pvticketlock: Use callee-save for lock_spinning Raghavendra K T
2012-05-02 10:07 ` [PATCH RFC V8 8/17] x86/pvticketlock: When paravirtualizing ticket locks, increment by 2 Raghavendra K T
2012-05-02 10:08 ` [PATCH RFC V8 9/17] Split out rate limiting from jump_label.h Raghavendra K T
2012-05-02 10:08 ` [PATCH RFC V8 10/17] x86/ticketlock: Add slowpath logic Raghavendra K T
2012-05-02 10:08 ` [PATCH RFC V8 11/17] xen/pvticketlock: Allow interrupts to be enabled while blocking Raghavendra K T
2012-05-02 10:08 ` [PATCH RFC V8 12/17] xen: Enable PV ticketlocks on HVM Xen Raghavendra K T
2012-05-02 10:08 ` [PATCH RFC V8 13/17] kvm hypervisor : Add a hypercall to KVM hypervisor to support pv-ticketlocks Raghavendra K T
2012-05-02 10:09 ` [PATCH RFC V8 14/17] kvm : Fold pv_unhalt flag into GET_MP_STATE ioctl to aid migration Raghavendra K T
2012-05-02 10:09 ` [PATCH RFC V8 15/17] kvm guest : Add configuration support to enable debug information for KVM Guests Raghavendra K T
2012-05-02 10:09 ` [PATCH RFC V8 16/17] kvm : Paravirtual ticketlocks support for linux guests running on KVM hypervisor Raghavendra K T
2012-05-02 10:09 ` [PATCH RFC V8 17/17] Documentation/kvm : Add documentation on Hypercalls and features used for PV spinlock Raghavendra K T
2012-05-30 11:54   ` Jan Kiszka
2012-05-30 13:44     ` Raghavendra K T
2012-05-07  8:29 ` [PATCH RFC V8 0/17] Paravirtualized ticket spinlocks Ingo Molnar
2012-05-07  8:32   ` Avi Kivity
2012-05-07 10:58     ` Raghavendra K T
2012-05-07 12:06       ` Avi Kivity
2012-05-07 13:20         ` Raghavendra K T
2012-05-07 13:22           ` Avi Kivity
2012-05-07 13:38             ` Raghavendra K T
2012-05-07 13:46               ` Srivatsa Vaddagiri
2012-05-07 13:49                 ` Avi Kivity
2012-05-07 13:53                   ` Raghavendra K T
2012-05-07 13:58                     ` Avi Kivity
2012-05-07 14:47                       ` Raghavendra K T
2012-05-07 14:52                         ` Avi Kivity
2012-05-07 14:54                           ` Avi Kivity
2012-05-07 17:25                           ` Ingo Molnar [this message]
2012-05-07 20:42                             ` Thomas Gleixner
2012-05-08  6:46                               ` Nikunj A Dadhania
2012-05-15 11:26                             ` [Xen-devel] " Jan Beulich
2012-05-08  5:25                           ` Raghavendra K T
2012-05-13 18:45                           ` Raghavendra K T
2012-05-14  4:57                             ` Nikunj A Dadhania
2012-05-14  9:01                               ` Raghavendra K T
2012-05-14  7:38                             ` Jeremy Fitzhardinge
2012-05-14  8:11                               ` Raghavendra K T
2012-05-16  3:19                             ` Raghavendra K T
2012-05-30 11:26                               ` Raghavendra K T
2012-06-14 12:21                                 ` Raghavendra K T
2012-05-07 13:55                   ` Srivatsa Vaddagiri
2012-05-07 23:15                   ` Jeremy Fitzhardinge
2012-05-08  1:13                     ` Raghavendra K T
2012-05-08  9:08                     ` Avi Kivity
2012-05-07 13:56                 ` Raghavendra K T
2012-05-13 17:59         ` Raghavendra K T

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