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Re: [Xen-devel] [PATCH RFC V3 2/4] kvm hypervisor : Add a hypercall to KVM hypervisor to support pv-ticketlocks
- To: Marcelo Tosatti <mtosatti@xxxxxxxxxx>
- From: Avi Kivity <avi@xxxxxxxxxx>
- Date: Wed, 07 Dec 2011 16:52:53 +0200
- Cc: Raghavendra K T <raghukt@xxxxxxxxxxxxxxxxxx>, x86@xxxxxxxxxx, Gleb Natapov <gleb@xxxxxxxxxx>, Peter Zijlstra <peterz@xxxxxxxxxxxxx>, Virtualization <virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx>, "H. Peter Anvin" <hpa@xxxxxxxxx>, Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>, Xen <xen-devel@xxxxxxxxxxxxxxxxxxx>, Dave Jiang <dave.jiang@xxxxxxxxx>, KVM <kvm@xxxxxxxxxxxxxxx>, Raghavendra K T <raghavendra.kt@xxxxxxxxxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>, Srivatsa Vaddagiri <vatsa@xxxxxxxxxxxxxxxxxx>, Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>, Sasha Levin <levinsasha928@xxxxxxxxx>, Sedat Dilek <sedat.dilek@xxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Yinghai Lu <yinghai@xxxxxxxxxx>, Greg Kroah-Hartman <gregkh@xxxxxxx>, LKML <linux-kernel@xxxxxxxxxxxxxxx>, Dave Hansen <dave@xxxxxxxxxxxxxxxxxx>, Suzuki Poulose <suzuki@xxxxxxxxxxxxxxxxxx>
- Delivery-date: Mon, 12 Dec 2011 14:39:50 +0000
- List-id: Xen developer discussion <xen-devel.lists.xensource.com>
On 12/07/2011 03:39 PM, Marcelo Tosatti wrote:
> > Also I think we can keep the kicked flag in vcpu->requests, no need for
> > new storage.
>
> Was going to suggest it but it violates the currently organized
> processing of entries at the beginning of vcpu_enter_guest.
>
> That is, this "kicked" flag is different enough from vcpu->requests
> processing that a separate variable seems worthwhile (even more
> different with convertion to MP_STATE at KVM_GET_MP_STATE).
IMO, it's similar to KVM_REQ_EVENT (which can also cause mpstate to
change due to apic re-evaluation).
--
error compiling committee.c: too many arguments to function
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