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Re: [PATCH v2] xen: add kconfig for event_fifo
- To: Stefano Stabellini <stefano.stabellini@xxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- From: "Orzel, Michal" <michal.orzel@xxxxxxx>
- Date: Wed, 2 Apr 2025 11:04:05 +0200
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- Cc: sstabellini@xxxxxxxxxx, andrew.cooper3@xxxxxxxxxx, jbeulich@xxxxxxxx, roger.pau@xxxxxxxxxx, julien@xxxxxxx, bertrand.marquis@xxxxxxx
- Delivery-date: Wed, 02 Apr 2025 09:04:21 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 28/03/2025 00:22, Stefano Stabellini wrote:
> Evtchn fifos are not needed on smaller systems; the older interface is
> lightweight and sufficient. Also, event_fifo causes runtime anonymous
> memory allocations, which are undesirable. Additionally, it exposes an
> extra interface to the guest, which is also undesirable unless
> necessary.
>
> Make it possible to disable evtchn fifo.
>
> Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxx>
Acked-by: Michal Orzel <michal.orzel@xxxxxxx>
~Michal
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