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From: remy.noel@blade-group.com
Date: Mon, 7 Jan 2019 20:04:58 +0100
Message-ID: <20190107190458.5zz4dx36zuuzrc6f@gmail.com>
References: <20181220152030.28035-1-remy.noel@blade-group.com>
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In-Reply-To: <20181220152030.28035-1-remy.noel@blade-group.com>
Subject: Re: [Qemu-devel] [QEMU-devel][PATCH v4 0/2] Fix concurrent
 aio_poll/set_fd_handler.
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To: remy.noel@blade-group.com
Cc: qemu-devel@nongnu.org, Paolo Bonzini <pbonzini@redhat.com>, Stefan Hajnoczi <stefanha@redhat.com>, Fam Zheng <famz@redhat.com>, Stefan Weil <sw@weilnetz.de>

On Thu, Dec 20, 2018 at 04:20:28PM +0100, Remy Noel wrote:
>From: Remy Noel <remy.noel@blade-group.com>
>
>It is possible for an io_poll/read/write callback to be concurrently executed along
>with an aio_set_fd_handlers. This can cause all sorts of problems, like
>a NULL callback or a bad opaque pointer.
>
>V2:
>    * Do not use RCU anymore as it inccurs a performance loss
>V3:
>    * Don't drop revents when a handler is modified [Stefan]
>V4:
>    * Unregister fd from ctx epoll when removing fd_handler [Paolo]
>
>Remy Noel (2):
>  aio-posix: Unregister fd from ctx epoll when removing fd_handler.
>  aio-posix: Fix concurrent aio_poll/set_fd_handler.
>
> util/aio-posix.c | 90 +++++++++++++++++++++++++++++-------------------
> util/aio-win32.c | 67 ++++++++++++++++-------------------
> 2 files changed, 84 insertions(+), 73 deletions(-)
>
>-- 
>2.19.2
>
ping.

Does it needs anything for getting queued ?

Thanks.

Remy.