linux-kernel - Re: [PATCH] xen/events: Always allocate legacy interrupts on PV guests

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Date:	Tue, 17 Nov 2015 17:24:20 +0100
From:	Juergen Gross <jgross@...e.com>
To:	Boris Ostrovsky <boris.ostrovsky@...cle.com>,
	konrad.wilk@...cle.com, david.vrabel@...rix.com
Cc:	xen-devel@...ts.xen.org, linux-kernel@...r.kernel.org,
	tglx@...utronix.de
Subject: Re: [PATCH] xen/events: Always allocate legacy interrupts on PV
 guests

On 17/11/15 16:36, Boris Ostrovsky wrote:
> After commit 8c058b0b9c34 ("x86/irq: Probe for PIC presence before
> allocating descs for legacy IRQs") early_irq_init() will no longer
> preallocate descriptors for legacy interrupts if PIT does not
> exist.
> 
> Therefore we need to allocate those descriptors for PV guests
> ourselves.
> 
> Signed-off-by: Boris Ostrovsky <boris.ostrovsky@...cle.com>
> Suggested-by: Thomas Gleixner <tglx@...utronix.de>

Tested-by: Juergen Gross <jgross@...e.com>


Juergen
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