From mboxrd@z Thu Jan 1 00:00:00 1970 From: Srivatsa Vaddagiri Subject: [PATCH RFC 4/4] Add yield hypercall support in Qemu Date: Mon, 26 Jul 2010 11:46:34 +0530 Message-ID: <20100726061634.GD8402@linux.vnet.ibm.com> References: <20100726061150.GB21699@linux.vnet.ibm.com> Reply-To: vatsa@linux.vnet.ibm.com Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Marcelo Tosatti , Gleb Natapov , linux-kernel@vger.kernel.org, npiggin@suse.de, Jeremy Fitzhardinge , kvm@vger.kernel.org, bharata@in.ibm.com, Balbir Singh , Jan Beulich To: avi@redhat.com Return-path: Content-Disposition: inline In-Reply-To: <20100726061150.GB21699@linux.vnet.ibm.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: kvm.vger.kernel.org Add yield hypercall support in Qemu. Signed-off-by: Srivatsa Vaddagiri --- kvm/include/linux/kvm.h | 1 + kvm/include/x86/asm/kvm_para.h | 1 + target-i386/kvm.c | 3 +++ 3 files changed, 5 insertions(+) Index: qemu-kvm/kvm/include/linux/kvm.h =================================================================== --- qemu-kvm.orig/kvm/include/linux/kvm.h +++ qemu-kvm/kvm/include/linux/kvm.h @@ -499,6 +499,7 @@ struct kvm_ioeventfd { #define KVM_CAP_PPC_SEGSTATE 43 #define KVM_CAP_PCI_SEGMENT 47 +#define KVM_CAP_YIELD_HYPERCALL 55 #ifdef KVM_CAP_IRQ_ROUTING Index: qemu-kvm/kvm/include/x86/asm/kvm_para.h =================================================================== --- qemu-kvm.orig/kvm/include/x86/asm/kvm_para.h +++ qemu-kvm/kvm/include/x86/asm/kvm_para.h @@ -15,6 +15,7 @@ #define KVM_FEATURE_CLOCKSOURCE 0 #define KVM_FEATURE_NOP_IO_DELAY 1 #define KVM_FEATURE_MMU_OP 2 +#define KVM_FEATURE_YIELD 4 #define MSR_KVM_WALL_CLOCK 0x11 #define MSR_KVM_SYSTEM_TIME 0x12 Index: qemu-kvm/target-i386/kvm.c =================================================================== --- qemu-kvm.orig/target-i386/kvm.c +++ qemu-kvm/target-i386/kvm.c @@ -147,6 +147,9 @@ struct kvm_para_features { #ifdef KVM_CAP_PV_MMU { KVM_CAP_PV_MMU, KVM_FEATURE_MMU_OP }, #endif +#ifdef KVM_CAP_YIELD_HYPERCALL + { KVM_CAP_YIELD_HYPERCALL, KVM_FEATURE_YIELD }, +#endif { -1, -1 } };