Jan Beulich
2006-Aug-29 14:56 UTC
[Xen-devel] odd vcpu_info accesses in xen/arch/x86/time.c
Is there a particular reason why in several places in this file, with a vcpu pointer at hand, the vcpu_info is accessed through v->domain->shared_info->vcpu_info[v->vcpu_id] rather than v->vcpu_info Thanks, Jan _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Keir Fraser
2006-Aug-30 16:27 UTC
Re: [Xen-devel] odd vcpu_info accesses in xen/arch/x86/time.c
On 29/8/06 3:56 pm, "Jan Beulich" <jbeulich@novell.com> wrote:> Is there a particular reason why in several places in this file, with a vcpu > pointer > at hand, the vcpu_info is accessed through > > v->domain->shared_info->vcpu_info[v->vcpu_id] > > rather than > > v->vcpu_infoNo. They should be fixed. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Jan Beulich
2006-Aug-31 08:08 UTC
[PATCH] Re: [Xen-devel] odd vcpu_info accesses in xen/arch/x86/time.c
>>> Keir Fraser <Keir.Fraser@cl.cam.ac.uk> 30.08.06 18:27 >>> >On 29/8/06 3:56 pm, "Jan Beulich" <jbeulich@novell.com> wrote: > >> Is there a particular reason why in several places in this file, with a vcpu >> pointer >> at hand, the vcpu_info is accessed through >> >> v->domain->shared_info->vcpu_info[v->vcpu_id] >> >> rather than >> >> v->vcpu_info > >No. They should be fixed.Signed-off-by: Jan Beulich <jbeulich@novell.com> Index: 2006-08-28/xen/arch/x86/time.c ==================================================================--- 2006-08-28.orig/xen/arch/x86/time.c 2006-08-31 09:52:31.000000000 +0200 +++ 2006-08-28/xen/arch/x86/time.c 2006-08-31 09:55:54.000000000 +0200 @@ -676,7 +676,7 @@ static inline void __update_vcpu_system_ struct vcpu_time_info *u; t = &this_cpu(cpu_time); - u = &v->domain->shared_info->vcpu_info[v->vcpu_id].time; + u = &v->vcpu_info->time; version_update_begin(&u->version); @@ -690,7 +690,7 @@ static inline void __update_vcpu_system_ void update_vcpu_system_time(struct vcpu *v) { - if ( v->domain->shared_info->vcpu_info[v->vcpu_id].time.tsc_timestamp != + if ( v->vcpu_info->time.tsc_timestamp ! this_cpu(cpu_time).local_tsc_stamp ) __update_vcpu_system_time(v); } _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel