From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sheng Yang Subject: [PATCH 1/5] qemu-kvm: Add kvm_enable_cap() interface for x86 Date: Wed, 20 Oct 2010 16:29:51 +0800 Message-ID: <1287563395-30039-2-git-send-email-sheng@linux.intel.com> References: <1287563395-30039-1-git-send-email-sheng@linux.intel.com> Cc: "Michael S. Tsirkin" , kvm@vger.kernel.org, Sheng Yang To: Avi Kivity , Marcelo Tosatti Return-path: Received: from mga11.intel.com ([192.55.52.93]:62434 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752044Ab0JTI2u (ORCPT ); Wed, 20 Oct 2010 04:28:50 -0400 In-Reply-To: <1287563395-30039-1-git-send-email-sheng@linux.intel.com> Sender: kvm-owner@vger.kernel.org List-ID: Signed-off-by: Sheng Yang --- qemu-kvm.c | 16 ++++++++++++++++ qemu-kvm.h | 8 ++++++++ 2 files changed, 24 insertions(+), 0 deletions(-) diff --git a/qemu-kvm.c b/qemu-kvm.c index 733d0a9..fbb68f6 100644 --- a/qemu-kvm.c +++ b/qemu-kvm.c @@ -540,6 +540,22 @@ int kvm_set_xcrs(CPUState *env, struct kvm_xcrs *xcrs) } #endif +#ifdef KVM_CAP_ENABLE_CAP +int kvm_enable_cap(CPUState *env, uint32_t cap) +{ + int r = 0; + struct kvm_enable_cap enable_cap = { + .cap = cap, + .flags = 0, + }; + + r = kvm_ioctl(kvm_state, KVM_CHECK_EXTENSION, KVM_CAP_ENABLE_CAP); + if (r > 0) + r = kvm_vcpu_ioctl(env, KVM_ENABLE_CAP, &enable_cap); + return r; +} +#endif + static int handle_mmio(CPUState *env) { unsigned long addr = env->kvm_run->mmio.phys_addr; diff --git a/qemu-kvm.h b/qemu-kvm.h index 9c08ab4..5cac0c2 100644 --- a/qemu-kvm.h +++ b/qemu-kvm.h @@ -316,6 +316,14 @@ int kvm_get_xcrs(CPUState *env, struct kvm_xcrs *xcrs); int kvm_set_xcrs(CPUState *env, struct kvm_xcrs *xcrs); #endif +#ifdef KVM_ENABLE_CAP +/*! + * * \brief Enable specific capability of KVM + * + */ +int kvm_enable_cap(CPUState *env, uint32_t cap); +#endif + /*! * \brief Simulate an external vectored interrupt * -- 1.7.0.1