Re: [PATCH v3][4.15] tools/x86: don't rebuild cpuid-autogen.h every time

[Ian Jackson <iwj@xxxxxxxxxxxxxx>]

Jan Beulich writes ("[PATCH v3][4.15] tools/x86: don't rebuild cpuid-autogen.h 
every time"):
> The first thing the "xen-dir" rule does is delete the entire xen/
> subtree. Obviously this includes deleting xen/lib/x86/*autogen.h. As a
> result there's no original version for $(move-if-changed ...) to compare
> against, and hence the file and all its consumers would get rebuilt
> every time. Instead only find and delete all the symlinks.
> 
> Fixes: eddf9559c977 ("libx86: generate cpuid-autogen.h in the libx86 include 
> dir")
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

Release-Acked-by: Ian Jackson <iwj@xxxxxxxxxxxxxx>
Reviewed-by: Ian Jackson <iwj@xxxxxxxxxxxxxx>

Thanks!