linux-kernel - Re: [PATCH] x86: used used_vectors in init

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Date:	Wed, 15 Apr 2009 12:46:05 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	Ingo Molnar <mingo@...e.hu>
CC:	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Joerg Roedel <joerg.roedel@....com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	stable@...nel.org
Subject: Re: [PATCH] x86: used used_vectors in init_IRQ

Ingo Molnar wrote:
> * Yinghai Lu <yinghai@...nel.org> wrote:
> 
>> Ingo Molnar wrote:
>>
>>> Note, i removed the -stable tag because i dont think .29 nor 
>>> .30-rc2 is affected. Your patch to irqinit*.c (and the later 
>>> unification by Pekka) is something still pending in the 
>>> perfcounters and x86 trees, queued for .31.
>> not sure .29, but it seems we need this for 2.6.30
>>

you are right...

in trap_init with linus tree

still have
#ifdef CONFIG_X86_64
        set_bit(IA32_SYSCALL_VECTOR, used_vectors);
#else
        set_bit(SYSCALL_VECTOR, used_vectors);
#endif


so one patch (merge irqinit_32/64) in tip for .31 expose that bug.

aka we don't back port ...

YH
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