From: Avi Kivity <avi@redhat.com> To: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org>, Greg Kroah-Hartman <gregkh@suse.de>, linux-doc@vger.kernel.org, Peter Zijlstra <peterz@infradead.org>, Jan Kiszka <jan.kiszka@siemens.com>, Virtualization <virtualization@lists.linux-foundation.org>, Paul Mackerras <paulus@samba.org>, "H. Peter Anvin" <hpa@zytor.com>, Stefano Stabellini <stefano.stabellini@eu.citrix.com>, Xen <xen-devel@lists.xensource.com>, Dave Jiang <dave.jiang@intel.com>, KVM <kvm@vger.kernel.org>, Glauber Costa <glommer@redhat.com>, X86 <x86@kernel.org>, Ingo Molnar <mingo@redhat.com>, Rik van Riel <riel@redhat.com>, Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>, Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>, Sasha Levin <levinsasha928@gmail.com>, Sedat Dilek <sedat.dilek@gmail.com>, Thomas Gleixner <tglx@linutronix.de>, LKML <linux-kernel@vger.kernel.org>, Dave Hansen <dave@linux.vnet.ibm.com>, Suzuki Poulo Subject: Re: [PATCH RFC V4 2/5] kvm hypervisor : Add a hypercall to KVM hypervisor to support pv-ticketlocks Date: Mon, 16 Jan 2012 11:03:15 +0200 [thread overview] Message-ID: <4F13E7D3.1060004@redhat.com> (raw) In-Reply-To: <20120114182553.8604.41642.sendpatchset@oc5400248562.ibm.com> On 01/14/2012 08:25 PM, Raghavendra K T wrote: > Add a hypercall to KVM hypervisor to support pv-ticketlocks > > KVM_HC_KICK_CPU allows the calling vcpu to kick another vcpu out of halt state. > > The presence of these hypercalls is indicated to guest via > KVM_FEATURE_PVLOCK_KICK/KVM_CAP_PVLOCK_KICK. > > Qemu needs a corresponding patch to pass up the presence of this feature to > guest via cpuid. Patch to qemu will be sent separately. No need to discuss qemu in a kernel patch. > > +/* > + * kvm_pv_kick_cpu_op: Kick a vcpu. > + * > + * @apicid - apicid of vcpu to be kicked. > + */ > +static void kvm_pv_kick_cpu_op(struct kvm *kvm, int apicid) > +{ > + struct kvm_vcpu *vcpu = NULL; > + int i; > + > + kvm_for_each_vcpu(i, vcpu, kvm) { > + if (!kvm_apic_present(vcpu)) > + continue; > + > + if (kvm_apic_match_dest(vcpu, 0, 0, apicid, 0)) > + break; > + } > + if (vcpu) { > + kvm_make_request(KVM_REQ_PVLOCK_KICK, vcpu); > + kvm_vcpu_kick(vcpu); > + } > +} > + The code that handles KVM_REQ_PVLOCK_KICK needs to be in this patch. -- error compiling committee.c: too many arguments to function
WARNING: multiple messages have this Message-ID (diff)
From: Avi Kivity <avi@redhat.com> To: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org>, Greg Kroah-Hartman <gregkh@suse.de>, linux-doc@vger.kernel.org, Peter Zijlstra <peterz@infradead.org>, Jan Kiszka <jan.kiszka@siemens.com>, Virtualization <virtualization@lists.linux-foundation.org>, Paul Mackerras <paulus@samba.org>, "H. Peter Anvin" <hpa@zytor.com>, Stefano Stabellini <stefano.stabellini@eu.citrix.com>, Xen <xen-devel@lists.xensource.com>, Dave Jiang <dave.jiang@intel.com>, KVM <kvm@vger.kernel.org>, Glauber Costa <glommer@redhat.com>, X86 <x86@kernel.org>, Ingo Molnar <mingo@redhat.com>, Rik van Riel <riel@redhat.com>, Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>, Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>, Sasha Levin <levinsasha928@gmail.com>, Sedat Dilek <sedat.dilek@gmail.com>, Thomas Gleixner <tglx@linutronix.de>, LKML <linux-kernel@vger.kernel.org>, Dave Hansen <dave@linux.vnet.ibm.com>, Suzuki Subject: Re: [PATCH RFC V4 2/5] kvm hypervisor : Add a hypercall to KVM hypervisor to support pv-ticketlocks Date: Mon, 16 Jan 2012 11:03:15 +0200 [thread overview] Message-ID: <4F13E7D3.1060004@redhat.com> (raw) In-Reply-To: <20120114182553.8604.41642.sendpatchset@oc5400248562.ibm.com> On 01/14/2012 08:25 PM, Raghavendra K T wrote: > Add a hypercall to KVM hypervisor to support pv-ticketlocks > > KVM_HC_KICK_CPU allows the calling vcpu to kick another vcpu out of halt state. > > The presence of these hypercalls is indicated to guest via > KVM_FEATURE_PVLOCK_KICK/KVM_CAP_PVLOCK_KICK. > > Qemu needs a corresponding patch to pass up the presence of this feature to > guest via cpuid. Patch to qemu will be sent separately. No need to discuss qemu in a kernel patch. > > +/* > + * kvm_pv_kick_cpu_op: Kick a vcpu. > + * > + * @apicid - apicid of vcpu to be kicked. > + */ > +static void kvm_pv_kick_cpu_op(struct kvm *kvm, int apicid) > +{ > + struct kvm_vcpu *vcpu = NULL; > + int i; > + > + kvm_for_each_vcpu(i, vcpu, kvm) { > + if (!kvm_apic_present(vcpu)) > + continue; > + > + if (kvm_apic_match_dest(vcpu, 0, 0, apicid, 0)) > + break; > + } > + if (vcpu) { > + kvm_make_request(KVM_REQ_PVLOCK_KICK, vcpu); > + kvm_vcpu_kick(vcpu); > + } > +} > + The code that handles KVM_REQ_PVLOCK_KICK needs to be in this patch. -- error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2012-01-16 9:03 UTC|newest] Thread overview: 139+ messages / expand[flat|nested] mbox.gz Atom feed top 2012-01-14 18:25 [PATCH RFC V4 0/5] kvm : Paravirt-spinlock support for KVM guests Raghavendra K T 2012-01-14 18:25 ` Raghavendra K T 2012-01-14 18:25 ` Raghavendra K T 2012-01-14 18:25 ` [PATCH RFC V4 1/5] debugfs: Add support to print u32 array in debugfs Raghavendra K T 2012-01-14 18:25 ` Raghavendra K T 2012-01-14 18:25 ` Raghavendra K T 2012-01-14 18:25 ` [PATCH RFC V4 2/5] kvm hypervisor : Add a hypercall to KVM hypervisor to support pv-ticketlocks Raghavendra K T 2012-01-14 18:25 ` Raghavendra K T 2012-01-14 18:25 ` Raghavendra K T 2012-01-16 3:24 ` Alexander Graf 2012-01-16 3:24 ` Alexander Graf 2012-01-16 8:43 ` Raghavendra K T 2012-01-16 8:43 ` Raghavendra K T 2012-01-16 9:03 ` Avi Kivity [this message] 2012-01-16 9:03 ` Avi Kivity 2012-01-16 9:55 ` Raghavendra K T 2012-01-16 9:55 ` Raghavendra K T 2012-01-14 18:26 ` [PATCH RFC V4 3/5] kvm guest : Added configuration support to enable debug information for KVM Guests Raghavendra K T 2012-01-14 18:26 ` Raghavendra K T 2012-01-14 18:26 ` Raghavendra K T 2012-01-14 18:26 ` [PATCH RFC V4 4/5] kvm : pv-ticketlocks support for linux guests running on KVM hypervisor Raghavendra K T 2012-01-14 18:26 ` Raghavendra K T 2012-01-14 18:26 ` Raghavendra K T 2012-01-16 3:12 ` Alexander Graf 2012-01-16 3:12 ` Alexander Graf 2012-01-16 7:25 ` Raghavendra K T 2012-01-16 7:25 ` Raghavendra K T 2012-01-16 9:05 ` Avi Kivity 2012-01-16 9:05 ` Avi Kivity 2012-01-16 14:13 ` Raghavendra K T 2012-01-16 14:13 ` Raghavendra K T 2012-01-16 14:47 ` Avi Kivity 2012-01-16 14:47 ` Avi Kivity 2012-01-16 23:49 ` Jeremy Fitzhardinge 2012-01-16 23:49 ` Jeremy Fitzhardinge 2012-01-17 11:02 ` Marcelo Tosatti 2012-01-17 11:02 ` Marcelo Tosatti 2012-01-17 11:33 ` Srivatsa Vaddagiri 2012-01-17 11:33 ` Srivatsa Vaddagiri 2012-01-18 1:34 ` Jeremy Fitzhardinge 2012-01-18 1:34 ` Jeremy Fitzhardinge 2012-01-18 13:54 ` Srivatsa Vaddagiri 2012-01-18 13:54 ` Srivatsa Vaddagiri 2012-01-18 21:52 ` Jeremy Fitzhardinge 2012-01-18 21:52 ` Jeremy Fitzhardinge 2012-01-24 14:08 ` Avi Kivity 2012-01-24 14:08 ` Avi Kivity 2012-01-24 18:51 ` Raghavendra K T 2012-01-24 18:51 ` Raghavendra K T 2012-01-17 18:57 ` Raghavendra K T 2012-01-17 18:57 ` Raghavendra K T 2012-01-24 19:01 ` Raghavendra K T 2012-01-14 18:27 ` [PATCH RFC V4 5/5] Documentation/kvm : Add documentation on Hypercalls and features used for PV spinlock Raghavendra K T 2012-01-14 18:27 ` Raghavendra K T 2012-01-14 18:27 ` Raghavendra K T 2012-01-14 18:27 ` Raghavendra K T 2012-01-16 3:23 ` Alexander Graf 2012-01-16 3:23 ` Alexander Graf 2012-01-16 3:51 ` Srivatsa Vaddagiri 2012-01-16 3:51 ` Srivatsa Vaddagiri 2012-01-16 4:00 ` Alexander Graf 2012-01-16 4:00 ` Alexander Graf 2012-01-16 8:47 ` Avi Kivity 2012-01-16 8:44 ` Raghavendra K T 2012-01-16 8:44 ` Raghavendra K T 2012-01-16 10:26 ` Alexander Graf 2012-01-16 10:26 ` Alexander Graf 2012-01-16 9:00 ` Avi Kivity 2012-01-16 9:00 ` Avi Kivity 2012-01-16 9:40 ` Srivatsa Vaddagiri 2012-01-16 10:14 ` Avi Kivity 2012-01-16 14:11 ` Srivatsa Vaddagiri 2012-01-17 9:14 ` Gleb Natapov 2012-01-17 9:14 ` Gleb Natapov 2012-01-17 12:26 ` Srivatsa Vaddagiri 2012-01-17 12:26 ` Srivatsa Vaddagiri 2012-01-17 12:51 ` Gleb Natapov 2012-01-17 12:51 ` Gleb Natapov 2012-01-17 13:11 ` Srivatsa Vaddagiri 2012-01-17 13:11 ` Srivatsa Vaddagiri 2012-01-17 13:20 ` Gleb Natapov 2012-01-17 13:20 ` Gleb Natapov 2012-01-17 14:28 ` Srivatsa Vaddagiri 2012-01-17 14:28 ` Srivatsa Vaddagiri 2012-01-17 15:32 ` Gleb Natapov 2012-01-17 15:32 ` Gleb Natapov 2012-01-17 15:53 ` Marcelo Tosatti 2012-01-17 15:53 ` Marcelo Tosatti 2012-01-20 15:09 ` Srivatsa Vaddagiri 2012-01-17 13:13 ` Raghavendra K T 2012-01-17 13:13 ` Raghavendra K T 2012-01-16 3:57 ` [PATCH RFC V4 0/5] kvm : Paravirt-spinlock support for KVM guests Alexander Graf 2012-01-16 3:57 ` Alexander Graf 2012-01-16 6:40 ` Jeremy Fitzhardinge 2012-01-16 6:40 ` Jeremy Fitzhardinge 2012-01-16 8:55 ` Avi Kivity 2012-01-16 8:55 ` Avi Kivity 2012-01-16 23:59 ` Jeremy Fitzhardinge 2012-01-16 23:59 ` Jeremy Fitzhardinge 2012-01-18 10:48 ` Raghavendra K T 2012-01-18 10:48 ` Raghavendra K T 2012-01-16 10:24 ` Alexander Graf 2012-01-16 10:24 ` Alexander Graf 2012-01-17 0:30 ` Jeremy Fitzhardinge 2012-01-17 0:30 ` Jeremy Fitzhardinge 2012-01-18 10:23 ` Raghavendra K T 2012-01-18 10:23 ` Raghavendra K T 2012-01-16 13:43 ` Raghavendra K T 2012-01-16 13:43 ` Raghavendra K T 2012-01-16 13:49 ` Avi Kivity 2012-01-16 13:49 ` Avi Kivity 2012-01-16 18:48 ` Raghavendra K T 2012-01-16 18:48 ` Raghavendra K T 2012-01-16 14:20 ` Srivatsa Vaddagiri 2012-01-16 14:20 ` Srivatsa Vaddagiri 2012-01-16 14:23 ` Alexander Graf 2012-01-16 14:23 ` Alexander Graf 2012-01-16 18:38 ` Raghavendra K T 2012-01-16 18:38 ` Raghavendra K T 2012-01-16 18:42 ` Alexander Graf 2012-01-16 18:42 ` Alexander Graf 2012-01-17 17:27 ` Raghavendra K T 2012-01-17 17:27 ` Raghavendra K T 2012-01-17 17:39 ` Alexander Graf 2012-01-17 17:39 ` Alexander Graf 2012-01-17 18:36 ` Raghavendra K T 2012-01-17 18:36 ` Raghavendra K T 2012-01-17 21:57 ` Dave Hansen 2012-01-17 21:57 ` Dave Hansen 2012-01-18 2:27 ` Raghavendra K T 2012-01-18 2:27 ` Raghavendra K T 2012-01-25 8:55 ` Raghavendra K T 2012-01-25 8:55 ` Raghavendra K T 2012-01-25 16:35 ` Konrad Rzeszutek Wilk 2012-01-25 16:35 ` Konrad Rzeszutek Wilk 2012-01-25 17:45 ` Raghavendra K T 2012-01-25 17:45 ` Raghavendra K T 2012-01-25 19:05 ` Konrad Rzeszutek Wilk 2012-01-25 19:05 ` Konrad Rzeszutek Wilk
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