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d="scan'208";a="5933806" Date: Mon, 23 Sep 2019 16:03:56 +0100 From: Anthony PERARD To: Paul Durrant Subject: Re: [PATCH] xen-bus: only set the xen device frontend state if it is missing Message-ID: <20190923150356.GB1163@perard.uk.xensource.com> References: <20190918115745.39006-1-paul.durrant@citrix.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <20190918115745.39006-1-paul.durrant@citrix.com> User-Agent: Mutt/1.12.2 (2019-09-21) X-detected-operating-system: by eggs.gnu.org: FreeBSD 9.x X-Received-From: 216.71.145.153 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: xen-devel@lists.xenproject.org, Stefano Stabellini , qemu-devel@nongnu.org, Mark Syms Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Wed, Sep 18, 2019 at 12:57:44PM +0100, Paul Durrant wrote: > From: Mark Syms > > Some toolstack implementations will set the frontend xenstore > keys to Initialising which will then trigger the in guest PV > drivers to begin initialising and some implementations will > then set their state to Closing. If this has occurred then > device realize must not overwrite the frontend keys as then > the handshake will stall. > > Signed-off-by: Mark Syms > > Also avoid creating the frontend area if it already exists. > > Signed-off-by: Paul Durrant Reviewed-by: Anthony PERARD Thanks, -- Anthony PERARD