linux-kernel - Re: [RFC 4/4] switch non-standard SYSCALL_VECTOR allocation to use vector

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Date:	Sun, 14 Sep 2008 17:40:46 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Dean Nelson <dcn@....com>
Cc:	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Alan Mayer <ajm@....com>, jeremy@...p.org,
	rusty@...tcorp.com.au, suresh.b.siddha@...el.com,
	torvalds@...ux-foundation.org, linux-kernel@...r.kernel.org,
	"H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Yinghai Lu <Yinghai.lu@....com>
Subject: Re: [RFC 4/4] switch non-standard SYSCALL_VECTOR allocation to use
	vector_irq[]


* Dean Nelson <dcn@....com> wrote:

> Replace the current use of used_vectors[] for the allocation of a 
> non-standard SYSCALL_VECTOR by also using the per_cpu variable 
> vector_irq[].

this:

> Index: linux/arch/x86/kernel/traps_32.c
> ===================================================================
> --- linux.orig/arch/x86/kernel/traps_32.c	2008-09-10 14:25:23.000000000 -0500
> +++ linux/arch/x86/kernel/traps_32.c	2008-09-10 14:25:28.000000000 -0500

> +	ret = __grab_irq_vector(NON_IRQ_DESC, SYSCALL_VECTOR,
> +				&cpu_possible_map);

break the build if IO_APIC is disabled. (see previous mail)

	Ingo
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