| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Thu, 31 Jul 2014 09:47:13 +0000 From: Igor Mammedov <imammedo@...hat.com> To: linux-kernel@...r.kernel.org Cc: x86@...nel.org, hpa@...or.com, mingo@...hat.com, tglx@...utronix.de, pbonzini@...hat.com, kvm@...r.kernel.org, mtosatti@...hat.com Subject: [PATCH 2/2] x86: kvm: do not advertise stable clocksource if CPU has TSC drift BUG Signed-off-by: Igor Mammedov <imammedo@...hat.com> --- arch/x86/kvm/cpuid.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c index 38a0afe..f519823 100644 --- a/arch/x86/kvm/cpuid.c +++ b/arch/x86/kvm/cpuid.c @@ -478,8 +478,9 @@ static inline int __do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function, (1 << KVM_FEATURE_CLOCKSOURCE2) | (1 << KVM_FEATURE_ASYNC_PF) | (1 << KVM_FEATURE_PV_EOI) | - (1 << KVM_FEATURE_CLOCKSOURCE_STABLE_BIT) | (1 << KVM_FEATURE_PV_UNHALT); + if (!static_cpu_has_bug(X86_BUG_AMD_TSC_DRIFT)) + entry->eax |= (1 << KVM_FEATURE_CLOCKSOURCE_STABLE_BIT); if (sched_info_on()) entry->eax |= (1 << KVM_FEATURE_STEAL_TIME); -- 1.8.3.1 -- 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/
Powered by blists - more mailing lists