From mboxrd@z Thu Jan 1 00:00:00 1970 From: Glauber Costa Subject: [PATCH 8/9] Tell the guest we'll warn it about tsc stability Date: Tue, 11 May 2010 12:17:46 -0400 Message-ID: <1273594667-17175-9-git-send-email-glommer@redhat.com> References: <1273594667-17175-1-git-send-email-glommer@redhat.com> <1273594667-17175-2-git-send-email-glommer@redhat.com> <1273594667-17175-3-git-send-email-glommer@redhat.com> <1273594667-17175-4-git-send-email-glommer@redhat.com> <1273594667-17175-5-git-send-email-glommer@redhat.com> <1273594667-17175-6-git-send-email-glommer@redhat.com> <1273594667-17175-7-git-send-email-glommer@redhat.com> <1273594667-17175-8-git-send-email-glommer@redhat.com> Cc: linux-kernel@vger.kernel.org, avi@redhat.com, zamsden@redhat.com To: kvm@vger.kernel.org Return-path: In-Reply-To: <1273594667-17175-8-git-send-email-glommer@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: kvm.vger.kernel.org This patch puts up the flag that tells the guest that we'll warn it about the tsc being trustworthy or not. By now, we also say it is not. --- arch/x86/kvm/x86.c | 5 ++++- 1 files changed, 4 insertions(+), 1 deletions(-) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index a51b560..7922401 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -855,6 +855,8 @@ static void kvm_write_guest_time(struct kvm_vcpu *v) vcpu->hv_clock.system_time = ts.tv_nsec + (NSEC_PER_SEC * (u64)ts.tv_sec) + v->kvm->arch.kvmclock_offset; + vcpu->hv_clock.flags = 0; + /* * The interface expects us to write an even number signaling that the * update is finished. Since the guest won't see the intermediate @@ -1983,7 +1985,8 @@ static void do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function, case KVM_CPUID_FEATURES: entry->eax = (1 << KVM_FEATURE_CLOCKSOURCE) | (1 << KVM_FEATURE_NOP_IO_DELAY) | - (1 << KVM_FEATURE_CLOCKSOURCE2); + (1 << KVM_FEATURE_CLOCKSOURCE2) | + (1 << KVM_FEATURE_CLOCKSOURCE_STABLE_BIT); entry->ebx = 0; entry->ecx = 0; entry->edx = 0; -- 1.6.2.2