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Re: [PATCH] 9p/xen: fix init sequence
- To: Alexander Merritt <alexander@xxxxxxxxx>, v9fs@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx
- From: Jürgen Groß <jgross@xxxxxxxx>
- Date: Thu, 21 Nov 2024 13:00:38 +0100
- Cc: Eric Van Hensbergen <ericvh@xxxxxxxxxx>, Latchesar Ionkov <lucho@xxxxxxxxxx>, Dominique Martinet <asmadeus@xxxxxxxxxxxxx>, Christian Schoenebeck <linux_oss@xxxxxxxxxxxxx>, Simon Horman <horms@xxxxxxxxxx>, Alex Zenla <alex@xxxxxxxxx>, Ariadne Conill <ariadne@ariadne.space>
- Delivery-date: Thu, 21 Nov 2024 12:01:00 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 19.11.24 22:16, Alexander Merritt wrote:
From: Alex Zenla <alex@xxxxxxxxx>
Large amount of mount hangs observed during hotplugging of 9pfs devices. The
9pfs Xen driver attempts to initialize itself more than once, causing the
frontend and backend to disagree: the backend listens on a channel that the
frontend does not send on, resulting in stalled processing.
Only allow initialization of 9p frontend once.
Fixes: c15fe55d14b3b ("9p/xen: fix connection sequence")
Signed-off-by: Alex Zenla <alex@xxxxxxxxx>
Signed-off-by: Alexander Merritt <alexander@xxxxxxxxx>
Signed-off-by: Ariadne Conill <ariadne@ariadne.space>
Reviewed-by: Juergen Gross <jgross@xxxxxxxx>
Juergen
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