linux-kernel - Re: [PATCH] x86: APIC: Remove apic_write

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Date:	Fri, 18 Jul 2008 14:13:52 -0700
From:	"Yinghai Lu" <yhlu.kernel@...il.com>
To:	"Ingo Molnar" <mingo@...e.hu>
Cc:	"Maciej W. Rozycki" <macro@...ux-mips.org>, x86@...nel.org,
	linux-kernel@...r.kernel.org,
	"Suresh Siddha" <suresh.b.siddha@...el.com>,
	"Jeremy Fitzhardinge" <jeremy@...p.org>,
	"Zachary Amsden" <zach@...are.com>
Subject: Re: [PATCH] x86: APIC: Remove apic_write_around(); use alternatives

On Fri, Jul 18, 2008 at 2:03 PM, Ingo Molnar <mingo@...e.hu> wrote:
>
> * Yinghai Lu <yhlu.kernel@...il.com> wrote:
>
>> > git merge tip/x86/x2apic
>> CONFLICT (content): Merge conflict in arch/x86/kernel/Makefile
>> CONFLICT (content): Merge conflict in arch/x86/kernel/paravirt.c
>> CONFLICT (content): Merge conflict in arch/x86/kernel/smpboot.c
>> CONFLICT (content): Merge conflict in arch/x86/kernel/vmi_32.c
>> CONFLICT (content): Merge conflict in arch/x86/xen/enlighten.c
>> CONFLICT (content): Merge conflict in include/asm-x86/apic.h
>> CONFLICT (content): Merge conflict in include/asm-x86/paravirt.h
>
> that's due to the changes in tip/x86/apic and in tip/x86/uv.
>
> ok, i've just merged x86/apic into x86/x2apic and x86/uv as well, and
> pushed out the result.
>
> Note: it's a first raw merge and completely untested. It will now merge
> cleanly into tip/master. There are probably a few details missing.
>
> The smp-alternatives based trick that Maciej applied for write-around
> can stay in the mem_apic_* methods - modern APICs do not need any
> workaround in this area and can just use apic_ops.

  CC      arch/x86/kernel/apic_64.o
arch/x86/kernel/apic_64.c:170: error: unknown field 'write_atomic'
specified in initializer
arch/x86/kernel/apic_64.c:170: error: 'native_apic_mem_write_atomic'
undeclared here (not in a function)
arch/x86/kernel/apic_64.c:209: error: unknown field 'write_atomic'
specified in initializer
arch/x86/kernel/apic_64.c:209: warning: initialization from
incompatible pointer type
make[1]: *** [arch/x86/kernel/apic_64.o] Error 1
make: *** [arch/x86/kernel] Error 2


YH
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