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

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Date:	Tue, 16 Dec 2014 14:51:00 +0000
From:	David Vrabel <david.vrabel@...rix.com>
To:	Jan Beulich <JBeulich@...e.com>, <david.vrabel@...rix.com>
CC:	Juergen Gross <JGross@...e.com>, <mmarek@...e.cz>,
	<x86@...nel.org>, <linux-kernel@...r.kernel.org>,
	<mingo@...hat.com>, <hpa@...or.com>,
	xen-devel <xen-devel@...ts.xenproject.org>, <tglx@...utronix.de>,
	<boris.ostrovsky@...cle.com>, <linux-kbuild@...r.kernel.org>
Subject: Re: [Xen-devel] [PATCH 1/4] xen: build infrastructure for generating
 hypercall depending symbols

On 15/12/14 11:47, Jan Beulich wrote:
>>>> 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?

I meant something like generated/asm/xen/hypercall-macros.h

So a "xen/" prefix which is consistent with all the other xen specific
headers.

But if this is non-trivial it's not a major issue.

David
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