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From: Avi Kivity <avi@qumranet.com>
To: Jeff Garzik <jeff@garzik.org>
Cc: Adrian Bunk <bunk@kernel.org>,
	LKML <linux-kernel@vger.kernel.org>,
	akpm@linux-foundation.org
Subject: Re: [PATCH 6/12] KVM: work around SMP requirement
Date: Wed, 24 Oct 2007 10:36:05 +0200	[thread overview]
Message-ID: <471F03F5.7090608@qumranet.com> (raw)
In-Reply-To: <471E79E2.2090204@garzik.org>

Jeff Garzik wrote:
> Adrian Bunk wrote:
>> On Tue, Oct 23, 2007 at 06:36:40PM -0400, Jeff Garzik wrote:
>>> KVM is currently completely broken for the !CONFIG_SMP case.
>>>
>>> drivers/kvm/kvm_main.c: In function ‘kvm_flush_remote_tlbs’:
>>> drivers/kvm/kvm_main.c:220: error: implicit declaration of function 
>>> ‘smp_call_function_mask’
>>>
>>> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
>>> ---
>>> I hope the KVM maintainer can come up with a better solution...
>>>
>>> diff --git a/drivers/kvm/Kconfig b/drivers/kvm/Kconfig
>>> index 8749fa4..e35fbc6 100644
>>> --- a/drivers/kvm/Kconfig
>>> +++ b/drivers/kvm/Kconfig
>>> @@ -16,7 +16,7 @@ if VIRTUALIZATION
>>>  
>>>  config KVM
>>>      tristate "Kernel-based Virtual Machine (KVM) support"
>>> -    depends on X86 && EXPERIMENTAL
>>> +    depends on X86 && EXPERIMENTAL && SMP
>>> ...
>>
>> Assuming it won't get fixed soon, the pattern would be "(SMP || 
>> BROKEN)".
>>
>> The effect is the same, but this makes it more obvious that KVM does 
>> not depend architecturally on SMP but just broken.
>>
>> Of course, the preferred solution is to simply get KVM fixed...
>
> In general I agree, but I specifically avoided CONFIG_BROKEN in case 
> it was an intentional choice to require an SMP kernel.
>

Of course SMP is not required.  I'll submit a patch to make 
smp_call_function_mask() available on UP kernels.  Andrew, please don't 
apply the KVM Kconfig patch.

-- 
error compiling committee.c: too many arguments to function


  reply	other threads:[~2007-10-24  8:37 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-10-23 22:36 [PATCH 1/12] X86: fix !CONFIG_SMP warning in processor.c Jeff Garzik
2007-10-23 22:36 ` [PATCH 2/12] X86: fix nvidia HPET warning Jeff Garzik
2007-10-24  4:05   ` Jeremy Fitzhardinge
2007-10-24  6:05     ` Jeff Garzik
2007-10-24 12:03   ` Ingo Molnar
2007-10-23 22:36 ` [PATCH 3/12] ACPI sbs: fix retval warning Jeff Garzik
2007-10-30 10:31   ` Jeff Garzik
2007-10-23 22:36 ` [PATCH 4/12] riscom8: fix SMP brokenness Jeff Garzik
2007-10-24  6:47   ` Jiri Slaby
2007-10-24  6:52     ` Jeff Garzik
2007-10-24  7:44       ` Jiri Slaby
2007-10-24  7:10     ` Andrew Morton
2007-10-24  7:44       ` Jiri Slaby
2007-10-24  8:00         ` Andrew Morton
2008-02-07  0:29   ` [bug] " Ingo Molnar
2008-02-20 20:37     ` Jeff Garzik
2008-02-20 22:00       ` Alan Cox
2007-10-23 22:36 ` [PATCH 5/12] ISDN/sc: fix longstanding warning Jeff Garzik
2007-10-24  7:24   ` Karsten Keil
2007-10-23 22:36 ` [PATCH 6/12] KVM: work around SMP requirement Jeff Garzik
2007-10-23 22:44   ` Adrian Bunk
2007-10-23 22:46     ` Jeff Garzik
2007-10-24  8:36       ` Avi Kivity [this message]
2007-10-24 12:32         ` [patch] kvm: fix !SMP build error Ingo Molnar
2007-10-24 12:36           ` Ingo Molnar
2007-10-24 18:11             ` Ingo Molnar
2007-11-01  3:34               ` Randy Dunlap
2007-11-01  8:31                 ` Ingo Molnar
2007-11-01 13:10                   ` Avi Kivity
2007-11-01 14:59                     ` Ingo Molnar
2007-11-01 21:16                       ` Avi Kivity
2007-10-23 22:36 ` [PATCH 7/12] eexpress: fix !SMP unused-var warning Jeff Garzik
2007-10-23 22:36 ` [PATCH 8/12] ni5010: kill unused variable Jeff Garzik
2007-10-23 22:36 ` [PATCH 9/12] cgroup: " Jeff Garzik
2007-10-24  0:19   ` Paul Menage
2007-10-23 22:36 ` [PATCH 10/12] mac80211: fix warning created by BIT() Jeff Garzik
2007-10-23 23:15   ` Randy Dunlap
2007-10-23 22:36 ` [PATCH 11/12] NET: fix subqueue bugs Jeff Garzik
2007-10-23 22:38   ` David Miller
2007-10-23 22:40     ` Jeff Garzik
2007-10-23 22:36 ` [PATCH 12/12] sound/isa: fix printk format Jeff Garzik
2007-10-24  4:03 ` [PATCH 1/12] X86: fix !CONFIG_SMP warning in processor.c Jeremy Fitzhardinge
2007-10-24 12:01 ` Ingo Molnar
2007-10-24 16:27 ` [2.6 patch] x86/kernel/acpi/processor.c: fix SMP=n warning Adrian Bunk

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