linux-kernel - Re: [PATCH 1/2] Xen: Fix bug `do_IRQ: cannot handle IRQ -1 vector 0x6 cpu 1'

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Date:	Mon, 18 Aug 2008 14:38:05 -0700
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Alex Nixon <alex.nixon@...rix.com>
CC:	Ingo Molnar <mingo@...e.hu>,
	the arch/x86 maintainers <x86@...nel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/2] Xen: Fix bug `do_IRQ: cannot handle IRQ -1 vector
 0x6 cpu 1'

Alex Nixon wrote:
> From: Alex Nixon <alex.nixon@...rix.com>
> Date: Mon, 18 Aug 2008 12:56:48 +0100
> Subject: [PATCH] Xen: Fix bug `do_IRQ: cannot handle IRQ -1 vector 0x6 cpu 1'
>
> Following commit 9c3f2468d8339866d9ef6a25aae31a8909c6be0d, do_IRQ() looks up the IRQ number in the per-cpu variable vector_irq.
>
> This commit makes Xen initialise an identity vector_irq map for both X86_32 and X86_64.
>   

Thanks Alex.

Ingo, please apply.

Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@...rix.com>

> Signed-off-by: Alex Nixon <alex.nixon@...rix.com>
> ---
>  arch/x86/xen/irq.c |    2 --
>  1 files changed, 0 insertions(+), 2 deletions(-)
>
> diff --git a/arch/x86/xen/irq.c b/arch/x86/xen/irq.c
> index 28b85ab..bb04260 100644
> --- a/arch/x86/xen/irq.c
> +++ b/arch/x86/xen/irq.c
> @@ -21,7 +21,6 @@ void xen_force_evtchn_callback(void)
>  
>  static void __init __xen_init_IRQ(void)
>  {
> -#ifdef CONFIG_X86_64
>  	int i;
>  
>  	/* Create identity vector->irq map */
> @@ -31,7 +30,6 @@ static void __init __xen_init_IRQ(void)
>  		for_each_possible_cpu(cpu)
>  			per_cpu(vector_irq, cpu)[i] = i;
>  	}
> -#endif	/* CONFIG_X86_64 */
>  
>  	xen_init_IRQ();
>  }
>   

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