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Re: [Xen-devel] [PATCH RFC V4 5/5] Documentation/kvm : Add documentation on Hypercalls and features used for PV spinlock
- To: Srivatsa Vaddagiri <vatsa@xxxxxxxxxxxxxxxxxx>
- From: Avi Kivity <avi@xxxxxxxxxx>
- Date: Mon, 16 Jan 2012 12:14:27 +0200
- Cc: Jeremy Fitzhardinge <jeremy@xxxxxxxx>, Raghavendra K T <raghavendra.kt@xxxxxxxxxxxxxxxxxx>, Gleb Natapov <gleb@xxxxxxxxxx>, linux-doc@xxxxxxxxxxxxxxx, Peter Zijlstra <peterz@xxxxxxxxxxxxx>, Jan Kiszka <jan.kiszka@xxxxxxxxxxx>, Virtualization <virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx>, Randy Dunlap <rdunlap@xxxxxxxxxxxx>, Paul Mackerras <paulus@xxxxxxxxx>, "H. Peter Anvin" <hpa@xxxxxxxxx>, Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>, Xen <xen-devel@xxxxxxxxxxxxxxxxxxx>, Dave Jiang <dave.jiang@xxxxxxxxx>, KVM <kvm@xxxxxxxxxxxxxxx>, Glauber Costa <glommer@xxxxxxxxxx>, X86 <x86@xxxxxxxxxx>, Alexander Graf <agraf@xxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>, Marcelo Tosatti <mtosatti@xxxxxxxxxx>, Sasha Levin <levinsasha928@xxxxxxxxx>, Sedat Dilek <sedat.dilek@xxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Greg Kroah-Hartman <gregkh@xxxxxxx>, LKML <linux-kernel@xxxxxxxxxxxxxxx>, Dave Hansen <dave@xxxxxxxxxxxxxxxxxx>, Suzuki Poulose <suzuki@xxxxxxxxxxxxxxxxxx>, Rob Landley <rlandley@xxxxxxxxxxxxx>
- Delivery-date: Mon, 16 Jan 2012 11:26:34 +0000
- List-id: Xen developer discussion <xen-devel.lists.xensource.com>
On 01/16/2012 11:40 AM, Srivatsa Vaddagiri wrote:
> * Avi Kivity <avi@xxxxxxxxxx> [2012-01-16 11:00:41]:
>
> > Wait, what happens with yield_on_hlt=0? Will the hypercall work as
> > advertised?
>
> Hmm ..I don't think it will work when yield_on_hlt=0.
>
> One option is to make the kick hypercall available only when
> yield_on_hlt=1?
It's not a good idea to tie various options together. Features should
be orthogonal.
Can't we make it work? Just have different handling for
KVM_REQ_PVLOCK_KICK (let's rename it, and the hypercall, PV_UNHALT,
since we can use it for non-locks too).
--
error compiling committee.c: too many arguments to function
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