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Re: [PATCH v2 4/5] x86/xen: Don't register Xen IPIs when they aren't going to be used

To: David Woodhouse <dwmw2@xxxxxxxxxxxxx>, x86@xxxxxxxxxx
From: boris.ostrovsky@xxxxxxxxxx
Date: Wed, 6 Jan 2021 09:47:23 -0500
Cc: Stefano Stabellini <sstabellini@xxxxxxxxxx>, Juergen Gross <jgross@xxxxxxxx>, Paul Durrant <pdurrant@xxxxxxxxxx>, jgrall@xxxxxxxxxx, karahmed@xxxxxxxxx, xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
Delivery-date: Wed, 06 Jan 2021 14:47:40 +0000
List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

On 1/5/21 6:57 PM, David Woodhouse wrote:
> From: David Woodhouse <dwmw@xxxxxxxxxxxx>
>
> In the case where xen_have_vector_callback is false, we still register
> the IPI vectors in xen_smp_intr_init() for the secondary CPUs even
> though they aren't going to be used. Stop doing that.
>
> Signed-off-by: David Woodhouse <dwmw@xxxxxxxxxxxx>



Reviewed-by: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>

References:
- [PATCH v2 0/5] Xen INTX/GSI event channel delivery fixes
  - From: David Woodhouse
- [PATCH v2 4/5] x86/xen: Don't register Xen IPIs when they aren't going to be used
  - From: David Woodhouse

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