Fix build of stable-4.16.5 and 4.14.37 with GCC 8.0.1

Fix build of stable-4.16.5 and 4.14.37 with GCC 8.0.1

[Fredrik Schön]

GCC 8.0.1 as shipped with Fedora 28 beta fails to build Linux-stable
4.16.5 and 4.14.37. Cherry-picking the below commits from mainline
fixes the build. Build and boot tested on x86-64

4.16.5:
854e55ad289e objtool, perf: Fix GCC 8 -Wrestrict error

4.14.37:
854e55ad289e objtool, perf: Fix GCC 8 -Wrestrict error
ad343a98e74e tools/lib/subcmd/pager.c: do not alias select() params

Regards,
Fredrik

Re: Fix build of stable-4.16.5 and 4.14.37 with GCC 8.0.1

[Greg KH]

On Sat, Apr 28, 2018 at 09:19:25PM +0200, Fredrik Sch�n wrote:
> GCC 8.0.1 as shipped with Fedora 28 beta fails to build Linux-stable
> 4.16.5 and 4.14.37. Cherry-picking the below commits from mainline
> fixes the build. Build and boot tested on x86-64
> 
> 4.16.5:
> 854e55ad289e objtool, perf: Fix GCC 8 -Wrestrict error
> 
> 4.14.37:
> 854e55ad289e objtool, perf: Fix GCC 8 -Wrestrict error
> ad343a98e74e tools/lib/subcmd/pager.c: do not alias select() params

All now queued up, thanks!

How about build warnings for gcc 8?  Anything we need to make it build
"clean" there?  I do have a fedora system around here, I guess I could
try it out myself later this week...

thanks,

greg k-h

Re: Fix build of stable-4.16.5 and 4.14.37 with GCC 8.0.1

[Greg KH]

On Sun, Apr 29, 2018 at 10:15:03PM +0200, Fredrik Sch�n wrote:
> 2018-04-29 14:53 GMT+02:00 Greg KH <gregkh@linuxfoundation.org>:
> > How about build warnings for gcc 8?  Anything we need to make it build
> > "clean" there?  I do have a fedora system around here, I guess I could
> > try it out myself later this week...
> 
> There are a ton of build warnings of the kind:
> 
> mm/vmscan.o: warning: objtool: shrink_slab.part.44()+0x120: sibling call
> from callable instruction with modified stack frame
> 
> I don't know how to fix them, unfortunately.

Do they show up in Linus's tree?  I thought Arnd was working on gcc 8
warning fixes a while ago...

thanks,

greg k-h