Re: [Xen-devel] [PATCH for-next 7/9] coverage: introduce support for llvm profiling

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 08.11.17 at 09:56, <roger.pau@xxxxxxxxxx> wrote:
> On Wed, Nov 08, 2017 at 01:38:59AM -0700, Jan Beulich wrote:
>> >>> On 26.10.17 at 11:19, <roger.pau@xxxxxxxxxx> wrote:
>> > --- a/xen/include/public/sysctl.h
>> > +++ b/xen/include/public/sysctl.h
>> > @@ -646,6 +646,12 @@ struct xen_sysctl_scheduler_op {
>> >  
>> >  #define XEN_GCOV_FORMAT_MAGIC    0x58434f56 /* XCOV */
>> 
>> Hmm, shouldn't the private magic #define-s actually be put here
>> (in which case you'd indeed need to retain both 32- and 64-bit
>> variants)?
> 
> I don't think so, here XEN_GCOV_FORMAT_MAGIC is a Xen specific gcov
> magic number.
> 
> OTOH LLVM_PROFILE_MAGIC_{64/32} is an llvm defined magic number,
> that's not under our control. Hence I don't think it should be
> exported in Xen public headers.

Okay.

Jan


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