From: David Vrabel <david.vrabel@citrix.com>
To: Tim Deegan <tim@xen.org>, Vitaly Kuznetsov <vkuznets@redhat.com>
Cc: Andrew Jones <drjones@redhat.com>, Keir Fraser <keir@xen.org>,
Ian Campbell <ian.campbell@citrix.com>,
Stefano Stabellini <stefano.stabellini@eu.citrix.com>,
Andrew Cooper <andrew.cooper3@citrix.com>,
Julien Grall <julien.grall@linaro.org>,
Ian Jackson <ian.jackson@eu.citrix.com>,
Olaf Hering <olaf@aepfle.de>,
David Vrabel <david.vrabel@citrix.com>,
Jan Beulich <jbeulich@suse.com>,
xen-devel@lists.xenproject.org, Wei Liu <wei.liu2@citrix.com>,
Daniel De Graaf <dgdegra@tycho.nsa.gov>
Subject: Re: [PATCH RFC 2/4] xen: grant_table: implement grant_table_soft_reset()
Date: Thu, 4 Jun 2015 16:22:14 +0100 [thread overview]
Message-ID: <55706D26.9020202@citrix.com> (raw)
In-Reply-To: <20150604141151.GG74656@deinos.phlegethon.org>
On 04/06/15 15:11, Tim Deegan wrote:
>
> There has been talk before of an operation along the lines of "revoke
> this grant entry and wait for all users to release it" but that would
> only help with backends that are guaranteed to release grants in a
> reasonable time.
Are you talking about my idea? This would be immediate because the grant
mapper would provide a local page to atomically switch the foreign
mapping to when the grant is revoked.
But, this isn't something that would be generally applicable to all grants.
David
next prev parent reply other threads:[~2015-06-04 15:25 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-03 13:35 [PATCH RFC 0/4] 'reset everything' approach to PVHVM guest kexec Vitaly Kuznetsov
2015-06-03 13:35 ` [PATCH RFC 1/4] xen: evtchn: make evtchn_reset() ready for soft reset Vitaly Kuznetsov
2015-06-04 14:05 ` Tim Deegan
2015-06-04 15:19 ` David Vrabel
2015-06-04 15:47 ` Tim Deegan
2015-06-05 8:52 ` Jan Beulich
2015-06-05 8:58 ` Ian Campbell
2015-06-05 9:07 ` Jan Beulich
2015-06-08 14:10 ` Jan Beulich
2015-06-08 15:05 ` Vitaly Kuznetsov
2015-06-03 13:35 ` [PATCH RFC 2/4] xen: grant_table: implement grant_table_soft_reset() Vitaly Kuznetsov
2015-06-04 14:11 ` Tim Deegan
2015-06-04 15:22 ` David Vrabel [this message]
2015-06-04 15:44 ` Tim Deegan
2015-06-08 14:26 ` Jan Beulich
2015-06-08 14:58 ` Vitaly Kuznetsov
2015-06-08 15:35 ` Jan Beulich
2015-06-03 13:35 ` [PATCH RFC 3/4] xen: implement SCHEDOP_soft_reset Vitaly Kuznetsov
2015-06-08 14:31 ` Jan Beulich
2015-06-22 16:00 ` Vitaly Kuznetsov
2015-06-22 16:06 ` Jan Beulich
2015-06-22 16:24 ` Vitaly Kuznetsov
2015-06-23 7:13 ` Jan Beulich
2015-06-23 12:10 ` Vitaly Kuznetsov
2015-06-23 12:52 ` Jan Beulich
2015-06-03 13:35 ` [PATCH RFC 4/4] xen: arch-specific hooks for domain_soft_reset() Vitaly Kuznetsov
2015-06-04 14:19 ` Tim Deegan
2015-06-22 9:44 ` Vitaly Kuznetsov
2015-06-25 9:57 ` Tim Deegan
2015-06-08 15:32 ` Jan Beulich
2015-06-08 15:59 ` Vitaly Kuznetsov
2015-06-04 14:22 ` [PATCH RFC 0/4] 'reset everything' approach to PVHVM guest kexec Tim Deegan
2015-06-08 15:38 ` Ian Jackson
2015-06-08 15:53 ` Wei Liu
2015-06-08 17:43 ` Wei Liu
2015-06-09 8:19 ` Dave Scott
2015-06-09 9:29 ` Wei Liu
2015-06-09 9:38 ` Wei Liu
2015-06-09 10:02 ` Dave Scott
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