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Date: Mon, 3 May 2010 11:52:07 -0400 From: Glauber Costa <glommer@...hat.com> To: kvm@...r.kernel.org Cc: linux-kernel@...r.kernel.org, avi@...hat.com, zamsden@...hat.com Subject: [PATCH v2 7/7] Tell the guest we'll warn it about tsc stability 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 8a7cdda..63a2acc 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 0x40000001: 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_TSC); break; case 0x80000000: entry->eax = min(entry->eax, 0x8000001a); -- 1.6.2.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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