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From: Jan Beulich <jbeulich@suse.com>
To: Stefano Stabellini <sstabellini@kernel.org>
Cc: julien@xen.org, Bertrand.Marquis@arm.com,
	Luca Miccio <lucmiccio@gmail.com>,
	Stefano Stabellini <stefano.stabellini@xilinx.com>,
	Volodymyr Babchuk <Volodymyr_Babchuk@epam.com>,
	Andrew Cooper <andrew.cooper3@citrix.com>,
	George Dunlap <george.dunlap@citrix.com>, Wei Liu <wl@xen.org>,
	xen-devel@lists.xenproject.org
Subject: Re: [XEN PATCH 1/7] xen: introduce XENFEAT_xenstore_late_init
Date: Mon, 10 Jan 2022 10:46:21 +0100	[thread overview]
Message-ID: <f3baac82-0eff-f885-f03a-ba987c8e12b6@suse.com> (raw)
In-Reply-To: <20220108004912.3820176-1-sstabellini@kernel.org>

On 08.01.2022 01:49, Stefano Stabellini wrote:
> Introduce a new feature flag to signal that xenstore will not be
> immediately available at boot time. Instead, xenstore will become
> available later, and a notification of xenstore readiness will be
> signalled to the guest using the xenstore event channel.

In addition to what Julien has said, I'd like to point out that Linux'es
xenbus driver already has means to deal with xenstored not being around
right away (perhaps because of living in a stubdom which starts in
parallel). I therefore wonder whether what you want can't be achieved
entirely inside that driver, without any new feature flag.

Jan



  parent reply	other threads:[~2022-01-10  9:47 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-01-08  0:49 [XEN PATCH 0/7] dom0less PV drivers Stefano Stabellini
2022-01-08  0:49 ` [XEN PATCH 1/7] xen: introduce XENFEAT_xenstore_late_init Stefano Stabellini
2022-01-08  3:41   ` Julien Grall
2022-01-10 22:55     ` Stefano Stabellini
2022-01-11 11:01       ` David Vrabel
2022-01-11 22:52         ` Stefano Stabellini
2022-01-10  9:46   ` Jan Beulich [this message]
2022-01-10 23:08     ` Stefano Stabellini
2022-01-11  7:14       ` Jan Beulich
2022-01-11 22:51         ` Stefano Stabellini
2022-01-08  0:49 ` [XEN PATCH 2/7] xen: introduce _evtchn_alloc_unbound Stefano Stabellini
2022-01-10 10:25   ` Jan Beulich
2022-01-11 22:49     ` Stefano Stabellini
2022-01-12  7:42       ` Jan Beulich
2022-01-13  0:45         ` Stefano Stabellini
2022-01-08  0:49 ` [XEN PATCH 3/7] tools: add a late_init argument to xs_introduce_domain Stefano Stabellini
2022-01-08  2:35   ` Marek Marczykowski-Górecki
2022-01-13  0:49     ` Stefano Stabellini
2022-01-08  3:46   ` Julien Grall
2022-01-08  0:49 ` [XEN PATCH 4/7] xen: introduce xen,enhanced dom0less property Stefano Stabellini
2022-01-11  3:31   ` Volodymyr Babchuk
2022-01-11 23:03     ` Stefano Stabellini
2022-01-08  0:49 ` [XEN PATCH 5/7] xen/arm: configure dom0less domain for enabling xenstore after boot Stefano Stabellini
2022-01-08  0:49 ` [XEN PATCH 6/7] xenstored: do_introduce: handle the late_init case Stefano Stabellini
2022-01-08  2:39   ` Marek Marczykowski-Górecki
2022-01-13  0:51     ` Stefano Stabellini
2022-01-08  3:54   ` Julien Grall
2022-01-10 22:48     ` Stefano Stabellini
2022-01-08  0:49 ` [XEN PATCH 7/7] tools: add example application to initialize dom0less PV drivers Stefano Stabellini
2022-01-08  4:02   ` Julien Grall
2022-01-10 22:57     ` Stefano Stabellini

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