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Re: [Qemu-block] [PATCH 1/3] xen-bus: use a separate fd for each event c
From: |
Anthony PERARD |
Subject: |
Re: [Qemu-block] [PATCH 1/3] xen-bus: use a separate fd for each event channel |
Date: |
Wed, 10 Apr 2019 12:37:42 +0100 |
User-agent: |
Mutt/1.11.4 (2019-03-13) |
On Mon, Apr 08, 2019 at 04:16:15PM +0100, Paul Durrant wrote:
> To better support use of IOThread-s it will be necessary to be able to set
> the AioContext for each XenEventChannel and hence it is necessary to open a
> separate handle to libxenevtchan for each channel.
>
> This patch stops using NotifierList for event channel callbacks, replacing
> that construct by a list of complete XenEventChannel structures. Each of
> these now has a xenevtchn_handle pointer in place of the single pointer
> previously held in the XenDevice structure. The individual handles are
> opened/closed in xen_device_bind/unbind_event_channel(), replacing the
> single open/close in xen_device_realize/unrealize().
>
> NOTE: This patch does not add an AioContext parameter to
> xen_device_bind_event_channel(). That will be done in a subsequent
> patch.
>
> Signed-off-by: Paul Durrant <address@hidden>
Reviewed-by: Anthony PERARD <address@hidden>
There are a few places were I would have like to add an assert, but they
can't be compiled-out in QEMU :-(.
Thanks,
--
Anthony PERARD
[Qemu-block] [PATCH 3/3] xen-bus / xen-block: add support for event channel polling, Paul Durrant, 2019/04/08