From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paolo Bonzini Subject: Re: [PATCH v7 02/17] KVM: Add some helper functions for Posted-Interrupts Date: Fri, 11 Sep 2015 12:16:44 +0200 Message-ID: <55F2AA0C.4020209@redhat.com> References: <1440492620-15934-1-git-send-email-feng.wu@intel.com> <1440492620-15934-3-git-send-email-feng.wu@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1440492620-15934-3-git-send-email-feng.wu@intel.com> Sender: linux-kernel-owner@vger.kernel.org To: Feng Wu , alex.williamson@redhat.com, joro@8bytes.org, mtosatti@redhat.com Cc: eric.auger@linaro.org, kvm@vger.kernel.org, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org List-Id: iommu@lists.linux-foundation.org On 25/08/2015 10:50, Feng Wu wrote: > This patch adds some helper functions to manipulate the > Posted-Interrupts Descriptor. > > Signed-off-by: Feng Wu > --- > arch/x86/kvm/vmx.c | 26 ++++++++++++++++++++++++++ > 1 file changed, 26 insertions(+) > > diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c > index 271dd70..316f9bf 100644 > --- a/arch/x86/kvm/vmx.c > +++ b/arch/x86/kvm/vmx.c > @@ -443,6 +443,8 @@ struct nested_vmx { > }; > > #define POSTED_INTR_ON 0 > +#define POSTED_INTR_SN 1 > + > /* Posted-Interrupt Descriptor */ > struct pi_desc { > u32 pir[8]; /* Posted interrupt requested */ > @@ -483,6 +485,30 @@ static int pi_test_and_set_pir(int vector, struct pi_desc *pi_desc) > return test_and_set_bit(vector, (unsigned long *)pi_desc->pir); > } > > +static void pi_clear_sn(struct pi_desc *pi_desc) > +{ > + return clear_bit(POSTED_INTR_SN, > + (unsigned long *)&pi_desc->control); > +} > + > +static void pi_set_sn(struct pi_desc *pi_desc) > +{ > + return set_bit(POSTED_INTR_SN, > + (unsigned long *)&pi_desc->control); > +} > + > +static int pi_test_on(struct pi_desc *pi_desc) > +{ > + return test_bit(POSTED_INTR_ON, > + (unsigned long *)&pi_desc->control); > +} > + > +static int pi_test_sn(struct pi_desc *pi_desc) > +{ > + return test_bit(POSTED_INTR_SN, > + (unsigned long *)&pi_desc->control); > +} > + > struct vcpu_vmx { > struct kvm_vcpu vcpu; > unsigned long host_rsp; > Reviewed-by: Paolo Bonzini