From: Jan Beulich <jbeulich@suse.com>
To: Juergen Gross <jgross@suse.com>
Cc: "Andrew Cooper" <andrew.cooper3@citrix.com>,
"Anthony PERARD" <anthony.perard@vates.tech>,
"Michal Orzel" <michal.orzel@amd.com>,
"Julien Grall" <julien@xen.org>,
"Roger Pau Monné" <roger.pau@citrix.com>,
"Stefano Stabellini" <sstabellini@kernel.org>,
xen-devel@lists.xenproject.org
Subject: Re: [PATCH v7 4/7] xen: add bitmap to indicate per-domain state changes
Date: Thu, 9 Jan 2025 16:49:05 +0100 [thread overview]
Message-ID: <96cd80fe-f4f1-430f-ab7c-2ce0befb20d7@suse.com> (raw)
In-Reply-To: <20250109105935.23585-5-jgross@suse.com>
On 09.01.2025 11:59, Juergen Gross wrote:
> Add a bitmap with one bit per possible domid indicating the respective
> domain has changed its state (created, deleted, dying, crashed,
> shutdown).
>
> Registering the VIRQ_DOM_EXC event will result in setting the bits for
> all existing domains and resetting all other bits.
>
> As the usage of this bitmap is tightly coupled with the VIRQ_DOM_EXC
> event, it is meant to be used only by a single consumer in the system,
> just like the VIRQ_DOM_EXC event.
>
> Resetting a bit will be done in a future patch.
>
> This information is needed for Xenstore to keep track of all domains.
>
> Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
next prev parent reply other threads:[~2025-01-09 15:49 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-01-09 10:59 [PATCH v7 0/7] remove libxenctrl usage from xenstored Juergen Gross
2025-01-09 10:59 ` [PATCH v7 1/7] xen/events: fix race with set_global_virq_handler() Juergen Gross
2025-01-09 15:46 ` Jan Beulich
2025-01-09 10:59 ` [PATCH v7 2/7] xen/events: don't allow binding a global virq from any domain Juergen Gross
2025-01-09 10:59 ` [PATCH v7 3/7] xen/events: allow setting of global virq handler only for unbound virqs Juergen Gross
2025-01-09 10:59 ` [PATCH v7 4/7] xen: add bitmap to indicate per-domain state changes Juergen Gross
2025-01-09 15:49 ` Jan Beulich [this message]
2025-01-09 10:59 ` [PATCH v7 5/7] xen: add new domctl get_changed_domain Juergen Gross
2025-01-09 15:50 ` Jan Beulich
2025-01-09 10:59 ` [PATCH v7 6/7] tools/libs: add a new libxenmanage library Juergen Gross
2025-01-09 10:59 ` [PATCH v7 7/7] tools/xenstored: use new stable interface instead of libxenctrl Juergen Gross
2025-01-16 13:44 ` Anthony PERARD
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