dect
/
linux-2.6
Archived
13
0
Fork 0
Code Releases Activity

KVM: x86: 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.

Signed-off-by: Glauber Costa <glommer@redhat.com>
Acked-by: Zachary Amsden <zamsden@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
This commit is contained in:
Glauber Costa 2010-05-11 12:17:46 -04:00 committed by Avi Kivity
parent 3a0d7256a6
commit 371bcf646d
1 changed files with 4 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
arch/x86/kvm/x86.c
View File

@ -857,6 +857,8 @@ 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
@ -1984,7 +1986,8 @@ 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;