From: Wei Liu <wei.liu2@citrix.com>
To: Zhongze Liu <blackskygg@gmail.com>
Cc: Wei Liu <wei.liu2@citrix.com>,
Julien Grall <julien.grall@arm.com>,
Stefano Stabellini <sstabellini@kernel.org>,
Ian Jackson <ian.jackson@eu.citrix.com>,
xen-devel@lists.xen.org
Subject: Re: [PATCH 6/6] libxl: support unmapping static shared memory areas during domain destruction
Date: Fri, 25 Aug 2017 12:05:48 +0100 [thread overview]
Message-ID: <20170825110548.e3ppbaxo4eh4esi6@citrix.com> (raw)
In-Reply-To: <20170822180840.20981-7-blackskygg@gmail.com>
On Wed, Aug 23, 2017 at 02:08:40AM +0800, Zhongze Liu wrote:
> Add libxl__sshm_del to Unmap static shared memory areas mapped by
Unmap -> unmap
> libxl__sshm_add during domain creation. The unmapping process is:
>
> * For a master: check if it still has living slaves: 1) if yes, mark its
> status as "zombie", and don't destroy the information under
> /local/static_shm; 2) if no, simply cleanup related xs entries
> * For a slave: unmap the shared pages, and cleanup related xs entries. If
> this is the only slave, and it's master is in zombie state, also cleanup
> the master entries.
I still think refcounting the node is better than this customised
protocol.
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prev parent reply other threads:[~2017-08-25 11:05 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-22 18:08 [PATCH 0/6] Allow setting up shared memory areas between VMs from xl config files Zhongze Liu
2017-08-22 18:08 ` [PATCH 1/6] libxc: add xc_domain_remove_from_physmap to wrap XENMEM_remove_from_physmap Zhongze Liu
2017-08-23 16:14 ` Wei Liu
2017-08-22 18:08 ` [PATCH 2/6] libxl: introduce a new structure to represent static shared memory regions Zhongze Liu
2017-08-22 20:05 ` Stefano Stabellini
2017-08-23 2:05 ` Zhongze Liu
2017-08-22 18:08 ` [PATCH 3/6] libxl:xl: add parsing code to parse "libxl_static_sshm" from xl config files Zhongze Liu
2017-08-22 20:36 ` Stefano Stabellini
2017-08-23 10:58 ` Julien Grall
2017-08-22 18:08 ` [PATCH 4/6] xsm: flask: change the interface and default policy for xsm_map_gmfn_foregin Zhongze Liu
2017-08-22 19:58 ` Stefano Stabellini
2017-08-23 2:18 ` Zhongze Liu
2017-08-23 15:56 ` Daniel De Graaf
2017-08-23 9:55 ` Jan Beulich
2017-08-23 17:16 ` Stefano Stabellini
2017-08-24 6:32 ` Jan Beulich
2017-08-24 0:51 ` Zhongze Liu
2017-08-24 6:37 ` Jan Beulich
2017-08-24 11:33 ` Zhongze Liu
2017-08-24 12:39 ` Jan Beulich
2017-08-24 14:30 ` Daniel De Graaf
2017-08-22 18:08 ` [PATCH 5/6] libxl: support mapping static shared memory areas during domain creation Zhongze Liu
2017-08-22 21:42 ` Stefano Stabellini
2017-08-23 2:37 ` Zhongze Liu
2017-08-25 11:05 ` Wei Liu
2017-08-25 12:02 ` Zhongze Liu
2017-08-25 12:09 ` Wei Liu
2017-08-22 18:08 ` [PATCH 6/6] libxl: support unmapping static shared memory areas during domain destruction Zhongze Liu
2017-08-22 21:31 ` Stefano Stabellini
2017-08-23 2:43 ` Zhongze Liu
2017-08-25 11:05 ` Wei Liu [this message]
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