From mboxrd@z Thu Jan 1 00:00:00 1970 From: Feng Wu Subject: [PATCH v9 08/18] KVM: Add some helper functions for Posted-Interrupts Date: Fri, 18 Sep 2015 22:29:46 +0800 Message-ID: <1442586596-5920-9-git-send-email-feng.wu@intel.com> References: <1442586596-5920-1-git-send-email-feng.wu@intel.com> Return-path: In-Reply-To: <1442586596-5920-1-git-send-email-feng.wu@intel.com> Sender: linux-kernel-owner@vger.kernel.org To: pbonzini@redhat.com, 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, Feng Wu List-Id: iommu@lists.linux-foundation.org This patch adds some helper functions to manipulate the Posted-Interrupts Descriptor. Signed-off-by: Feng Wu Reviewed-by: Paolo Bonzini --- 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; -- 2.1.0