Re: [PATCH v4 1/2] xen: asm-generic support

[Oleksii <oleksii.kurochko@gmail.com>]

On Wed, 2023-09-06 at 14:16 +0200, Jan Beulich wrote:
> On 01.09.2023 18:02, Oleksii Kurochko wrote:
> > --- /dev/null
> > +++ b/xen/scripts/Makefile.asm-generic
> > @@ -0,0 +1,23 @@
> > +# SPDX-License-Identifier: GPL-2.0
> 
> While this is what the Linux file presently says, you still want to
> add
> "-only", which is merely the newer name for the same thing.
> 
> > +# include/asm-generic contains a lot of files that are used
> > +# verbatim by several architectures.
> > +#
> > +# This Makefile reads the file arch/$(SRCARCH)/include/asm/Kbuild
> > +# and for each file listed in this file with generic-y creates
> > +# a small wrapper file in $(obj)
> > (arch/$(SRCARCH)/include/generated/asm)
> > +
> > +kbuild-file := $(srctree)/arch/$(SRCARCH)/include/asm/Kbuild
> > +include $(kbuild-file)
> > +
> > +include scripts/Kbuild.include
> > +
> > +# Create output directory if not already present
> > +_dummy := $(shell [ -d $(obj) ] || mkdir -p $(obj))
> > +
> > +quiet_cmd_wrap = WRAP    $@
> > +cmd_wrap = echo "\#include <asm-generic/$*.h>" >$@
> > +
> > +all: $(patsubst %, $(obj)/%, $(generic-y))
> > +
> > +$(obj)/%.h:
> > +       $(call cmd,wrap)
> 
> You've removed quite a bit of functionality, comparing with the Linux
> original. May I ask why that is? What they have all makes sense to
> me,
> and looks to be useful down the road.
I decided to take only minimum needed now but if you think it would be
better to use the latest Linux's Makefile.asm-generic then I will
update it in the next patch version.

~ Oleksii