From: Andrew Cooper Date: Mon, 9 Jan 2017 12:54:55 +0000 (+0000) Subject: x86/cpuid: Offer ITSC to domains which are automatically non-migrateable X-Git-Tag: archive/raspbian/4.11.1-1+rpi1~1^2~66^2~2962 X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=3f50ad8dae7f01df3adbbec7b9ce34b61f13d09c;p=xen.git x86/cpuid: Offer ITSC to domains which are automatically non-migrateable Dom0 doesn't have a toolstack to explicitly decide that ITSC is safe to offer. For domains which are automatically built with disable_migrate set, offer ITSC automatically. This is important for HVM-based dom0, and for when cpuid faulting is imposed on the control domain. Signed-off-by: Andrew Cooper Reviewed-by: Jan Beulich --- diff --git a/xen/arch/x86/cpuid.c b/xen/arch/x86/cpuid.c index ac2f34429c..eb829d797e 100644 --- a/xen/arch/x86/cpuid.c +++ b/xen/arch/x86/cpuid.c @@ -427,6 +427,9 @@ int init_domain_cpuid_policy(struct domain *d) *d->arch.cpuid = is_pv_domain(d) ? pv_max_policy : hvm_max_policy; + if ( d->disable_migrate ) + d->arch.cpuid->extd.itsc = cpu_has_itsc; + recalculate_cpuid_policy(d); for ( i = 0; i < MAX_CPUID_INPUT; i++ )