From: "H. Peter Anvin" <hpa@zytor.com>
To: Andi Kleen <andi@firstfloor.org>
Cc: "H. Peter Anvin" <hpa@kernel.org>, Dave Jones <davej@redhat.com>,
Vegard Nossum <vegard.nossum@gmail.com>,
the arch/x86 maintainers <x86@kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Rusty Russell <rusty@rustcorp.com.au>
Subject: Re: latest -git: WARNING: at arch/x86/kernel/ipi.c:123 send_IPI_mask_bitmask+0xc3/0xe0()
Date: Thu, 21 Aug 2008 23:24:56 -0700 [thread overview]
Message-ID: <48AE5BB8.5080701@zytor.com> (raw)
In-Reply-To: <20080822022841.GG23334@one.firstfloor.org>
Andi Kleen wrote:
>> You may want to see if this patch fixes the problem; it does *NOT* have
>> the correct error behaviour (some of the intervening layers don't
>> propagate errors), but it should make the fault go away.
>
> The alternative would be to just take out those msr_on_cpu()
> interfaces again. Right now they are useless in the kernel,
> but still cause problems.
>
> They were only added for OpenVZ's vCPUs which they back then
> promised me would hit mainline soon. But that was some time
> ago and there wasn't much progress on this.
>
> -Andi
We still need the equivalent functionality, though. The midlayer
(msr_on_cpu) may be pointless, but that doesn't change the fact that
putting this functionality in the lower layer (smp_call_function_single)
makes more sense.
-hpa
next prev parent reply other threads:[~2008-08-22 6:25 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-19 19:51 latest -git: WARNING: at arch/x86/kernel/ipi.c:123 send_IPI_mask_bitmask+0xc3/0xe0() Vegard Nossum
2008-08-20 1:39 ` Andi Kleen
2008-08-20 6:26 ` Vegard Nossum
2008-08-22 0:36 ` Dave Jones
2008-08-22 2:13 ` H. Peter Anvin
2008-08-22 2:28 ` Andi Kleen
2008-08-22 6:24 ` H. Peter Anvin [this message]
2008-08-22 9:35 ` Andi Kleen
2008-08-22 16:41 ` H. Peter Anvin
2008-08-23 6:42 ` Jeremy Fitzhardinge
2008-08-23 6:44 ` H. Peter Anvin
2008-08-22 11:13 ` adobriyan
2008-08-24 9:20 ` Vegard Nossum
2008-08-24 16:43 ` H. Peter Anvin
2008-08-24 17:17 ` H. Peter Anvin
2008-08-24 17:22 ` Vegard Nossum
2008-08-24 17:45 ` Vegard Nossum
2008-08-24 17:59 ` H. Peter Anvin
2008-08-24 18:13 ` Dave Jones
2008-08-25 18:31 ` Vegard Nossum
2008-08-25 18:38 ` Dave Jones
2008-08-25 18:36 ` Andi Kleen
2008-08-25 18:54 ` Dave Jones
2008-08-25 19:39 ` Andi Kleen
2008-08-25 19:50 ` Dave Jones
2008-08-25 20:36 ` Andi Kleen
2008-08-25 20:47 ` Dave Jones
2008-08-25 21:24 ` Arjan van de Ven
2008-08-25 19:08 ` H. Peter Anvin
2008-08-25 19:13 ` Dave Jones
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