On Thu, Jun 29, 2017 at 09:51:58AM +0200, Jiri Denemark wrote: > On Thu, Jun 29, 2017 at 03:11:41 +0200, Marek Marczykowski-Górecki wrote: > > CPUID leaf 7 is sub-leaf aware. Add missing attribute. > > --- > > src/cpu/cpu_map.xml | 58 +++++++++++++++++++++++----------------------- > > 1 file changed, 29 insertions(+), 29 deletions(-) > > > > diff --git a/src/cpu/cpu_map.xml b/src/cpu/cpu_map.xml > > index 29b5b59..037a057 100644 > > --- a/src/cpu/cpu_map.xml > > +++ b/src/cpu/cpu_map.xml > > @@ -195,93 +195,93 @@ > > > > <!-- cpuid function 0x7 ecx 0x0 features --> > > <feature name='fsgsbase'> > > - <cpuid eax_in='0x07' ebx='0x00000001'/> > > + <cpuid eax_in='0x07' ecx_in='0' ebx='0x00000001'/> > > Why? Zero is the default value for ecx_in, I don't see a strong reason > for mentioning it explicitly. If we do this, we should set the value to > 0x00 though.
There is a difference (at CPUID instruction level) between ignoring ECX value (leaf 1 for example) and requiring it to be set to 0. Looks like virCPUx86CPUID structure does not support this distinction though. Anyway I think it's better to include it there, will change to 0x00. -- Best Regards, Marek Marczykowski-Górecki Invisible Things Lab A: Because it messes up the order in which people normally read text. Q: Why is top-posting such a bad thing?
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