V2: [PATCH] x86: Install <sys/platform/x86.h> [BZ #26124]

[H.J. Lu]

On Thu, Jun 18, 2020 at 1:45 AM Florian Weimer <fweimer@redhat.com> wrote:
>
> * H. J. Lu via Libc-alpha:
>
> > <sys/platform/x86.h> exports only:
> >
> > struct cpu_features
> > {
> >   struct cpuid_registers cpuid[COMMON_CPUID_INDEX_MAX];
> >   unsigned int feature[FEATURE_INDEX_MAX];
> >   struct cpu_features_basic basic;
> > };
>
> The struct cpu_features ABI does not appear to be stable, as I wrote on
> the other thread:
>
>   <https://sourceware.org/pipermail/libc-alpha/2020-June/115161.html>
>

Here is the updated patch to use

struct cpu_features
{
  struct cpu_features_basic basic;
  unsigned int usable[USABLE_FEATURE_INDEX_MAX];
  struct cpuid_registers cpuid[COMMON_CPUID_INDEX_MAX];
};

This should be backward compatible for both .o and .so files.


-- 
H.J.
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