linux-kernel - Re: [Xen-devel] [PATCH 1/4] xen: build infrastructure for generating hypercall depending symbols

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Message-Id: <548ED84D020000780004F8FB@mail.emea.novell.com>
Date:	Mon, 15 Dec 2014 11:47:09 +0000
From:	"Jan Beulich" <JBeulich@...e.com>
To:	<david.vrabel@...rix.com>
Cc:	<x86@...nel.org>, <tglx@...utronix.de>,
	"xen-devel" <xen-devel@...ts.xenproject.org>,
	<boris.ostrovsky@...cle.com>, <konrad.wilk@...cle.com>,
	<mingo@...hat.com>, "Juergen Gross" <JGross@...e.com>,
	<mmarek@...e.cz>, <linux-kbuild@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <hpa@...or.com>
Subject: Re: [Xen-devel] [PATCH 1/4] xen: build infrastructure for
 generating hypercall depending symbols

>>> On 15.12.14 at 12:38, <david.vrabel@...rix.com> wrote:
> On 11/12/14 18:04, Juergen Gross wrote:
>> --- a/arch/x86/syscalls/Makefile
>> +++ b/arch/x86/syscalls/Makefile
> 
> Why are these changes here and not in arch/x86/xen/Makefile?

Because this needs to be done in a step that (afaict) has no hook
in the Xen-specific Makefile.

>> @@ -47,10 +50,16 @@ $(out)/syscalls_32.h: $(syscall32) $(systbl)
>>  $(out)/syscalls_64.h: $(syscall64) $(systbl)
>>  	$(call if_changed,systbl)
>>  
>> +$(out)/xen-hypercalls.h: $(srctree)/scripts/xen-hypercalls.sh
>> +	$(call if_changed,hypercalls)
>> +
>> +$(out)/xen-hypercalls.h: $(srctree)/include/xen/interface/xen*.h
> 
> The generated header should end up in asm/xen/

Why is generated/asm/ not good enough?

Jan

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