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From: Christopher Clark <christopher.w.clark@gmail.com>
To: Paul Durrant <Paul.Durrant@citrix.com>
Cc: Stefano Stabellini <sstabellini@kernel.org>,
	Wei Liu <wei.liu2@citrix.com>,
	Ross Philipson <ross.philipson@gmail.com>,
	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
	Daniel Smith <dpsmith@apertussolutions.com>,
	Andrew Cooper <Andrew.Cooper3@citrix.com>,
	Jason Andryuk <jandryuk@gmail.com>, "Tim (Xen.org)" <tim@xen.org>,
	George Dunlap <George.Dunlap@citrix.com>,
	Rich Persaud <persaur@gmail.com>,
	James McKenzie <voreekf@madingley.org>,
	Julien Grall <julien.grall@arm.com>,
	Jan Beulich <jbeulich@suse.com>,
	Ian Jackson <Ian.Jackson@citrix.com>,
	"xen-devel@lists.xenproject.org" <xen-devel@lists.xenproject.org>,
	Eric Chanudet <eric.chanudet@gmail.com>,
	Roger Pau Monne <roger.pau@citrix.com>
Subject: Re: [PATCH 03/25] argo: introduce the argo_message_op hypercall boilerplate
Date: Wed, 19 Dec 2018 21:13:43 -0800	[thread overview]
Message-ID: <CACMJ4GZUoE8mrvkjb+kZknQ_OVjQA3v1BJnAt8ZEmgDkew4fTA@mail.gmail.com> (raw)
In-Reply-To: <fc376b38bb6e46099f047b480c9c19cf@AMSPEX02CL03.citrite.net>

On Tue, Dec 4, 2018 at 1:44 AM Paul Durrant <Paul.Durrant@citrix.com> wrote:
>
> > -----Original Message-----
> > From: Christopher Clark [mailto:christopher.w.clark@gmail.com]
> > Sent: 01 December 2018 01:33
> > To: xen-devel@lists.xenproject.org
> > Subject: [PATCH 03/25] argo: introduce the argo_message_op hypercall
> > boilerplate
> >
> > Presence is gated upon CONFIG_ARGO.
> >
> > Registers the hypercall previously reserved for this.
> > Takes 5 arguments, does nothing and returns -ENOSYS.
> >
> > Will be avoiding a compat ABI by using fixed-size types in hypercall ops.
>
> You appear to be using handles, so will you not need compat code to deal with those?

No. The structures that the handles refer to are exactly the same on
both 32 and 64 bit, so the memory access operations that work with the
handle DTRT.

Communication has been tested and is working fine, eg. between a
client in a 32-bit guest and server in a 64-bit VM.

Christopher

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  reply	other threads:[~2018-12-20  5:13 UTC|newest]

Thread overview: 111+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-12-01  1:32 [PATCH 00/25] Argo: hypervisor-mediated interdomain communication Christopher Clark
2018-12-01  1:32 ` [PATCH 01/25] xen/evtchn: expose evtchn_bind_ipi_vcpu0_domain for use within Xen Christopher Clark
2018-12-03 16:20   ` Jan Beulich
2018-12-04  9:17     ` Christopher Clark
2018-12-01  1:32 ` [PATCH 02/25] argo: Introduce the Kconfig option to govern inclusion of Argo Christopher Clark
2018-12-03 15:51   ` Jan Beulich
2018-12-04  9:12     ` Christopher Clark
2018-12-01  1:32 ` [PATCH 03/25] argo: introduce the argo_message_op hypercall boilerplate Christopher Clark
2018-12-04  9:44   ` Paul Durrant
2018-12-20  5:13     ` Christopher Clark [this message]
2018-12-01  1:32 ` [PATCH 04/25] argo: define argo_dprintk for subsystem debugging Christopher Clark
2018-12-03 15:59   ` Jan Beulich
2018-12-01  1:32 ` [PATCH 05/25] argo: Add initial argo_init and argo_destroy Christopher Clark
2018-12-04  9:12   ` Paul Durrant
2018-12-13 13:16   ` Jan Beulich
2018-12-01  1:32 ` [PATCH 06/25] argo: Xen command line parameter 'argo': bool to enable/disable Christopher Clark
2018-12-04  9:18   ` Paul Durrant
2018-12-04 11:35   ` Jan Beulich
2018-12-01  1:32 ` [PATCH 07/25] xen (ARM, x86): add errno-returning functions for copy Christopher Clark
2018-12-04  9:35   ` Paul Durrant
2018-12-12 16:01   ` Roger Pau Monné
2018-12-20  5:16     ` Christopher Clark
2018-12-20  8:45       ` Jan Beulich
2018-12-20 12:57       ` Roger Pau Monné
2018-12-01  1:32 ` [PATCH 08/25] xen: define XEN_GUEST_HANDLE_NULL as null XEN_GUEST_HANDLE Christopher Clark
2018-12-04 11:39   ` Jan Beulich
2018-12-01  1:32 ` [PATCH 09/25] errno: add POSIX error codes EMSGSIZE, ECONNREFUSED to the ABI Christopher Clark
2018-12-03 15:42   ` Jan Beulich
2018-12-04  9:10     ` Christopher Clark
2018-12-04 10:04       ` Jan Beulich
2018-12-01  1:32 ` [PATCH 10/25] arm: introduce guest_handle_for_field() Christopher Clark
2018-12-04  9:46   ` Paul Durrant
2018-12-01  1:32 ` [PATCH 11/25] xsm, argo: XSM control for argo register operation, argo_mac bootparam Christopher Clark
2018-12-04  9:52   ` Paul Durrant
2018-12-20  5:19     ` Christopher Clark
2018-12-01  1:32 ` [PATCH 12/25] xsm, argo: XSM control for argo message send operation Christopher Clark
2018-12-04  9:53   ` Paul Durrant
2018-12-01  1:32 ` [PATCH 13/25] argo: implement the register op Christopher Clark
2018-12-02 20:10   ` Julien Grall
2018-12-04  9:08     ` Christopher Clark
2018-12-05 17:20       ` Julien Grall
2018-12-05 22:35         ` Christopher Clark
2018-12-11 13:51           ` Julien Grall
2018-12-04 10:57   ` Paul Durrant
2018-12-12  9:48   ` Jan Beulich
2018-12-20  5:29     ` Christopher Clark
2018-12-20  8:29       ` Jan Beulich
2018-12-21  1:25         ` Christopher Clark
2018-12-21  7:28           ` Jan Beulich
2018-12-21  8:16             ` Christopher Clark
2018-12-21  8:53               ` Jan Beulich
2018-12-21 23:28                 ` Christopher Clark
2018-12-12 16:47   ` Roger Pau Monné
2018-12-20  5:41     ` Christopher Clark
2018-12-20  8:51       ` Jan Beulich
2018-12-20 12:52       ` Roger Pau Monné
2018-12-21 23:05         ` Christopher Clark
2019-01-04  8:57           ` Roger Pau Monné
2019-01-04 13:22             ` Jan Beulich
2019-01-04 15:35               ` Roger Pau Monné
2019-01-04 15:47                 ` Jan Beulich
2019-01-07  9:00                   ` Roger Pau Monné
2019-01-09 16:15                     ` Tamas K Lengyel
2019-01-09 16:23                       ` Razvan Cojocaru
2019-01-09 16:34                       ` Roger Pau Monné
2019-01-09 16:48                         ` Razvan Cojocaru
2019-01-09 16:50                           ` Tamas K Lengyel
2019-01-09 16:59                             ` Roger Pau Monné
2019-01-09 17:03                               ` Fwd: " Roger Pau Monné
2019-01-09 17:03                             ` Razvan Cojocaru
2018-12-01  1:32 ` [PATCH 14/25] argo: implement the unregister op Christopher Clark
2018-12-04 11:10   ` Paul Durrant
2018-12-12  9:51   ` Jan Beulich
2018-12-01  1:32 ` [PATCH 15/25] argo: implement the sendv op Christopher Clark
2018-12-04 11:22   ` Paul Durrant
2018-12-12 11:52   ` Jan Beulich
2018-12-20  5:58     ` Christopher Clark
2018-12-20  8:33       ` Jan Beulich
2019-01-04  8:13         ` Christopher Clark
2019-01-04  8:43           ` Roger Pau Monné
2019-01-04 13:37           ` Jan Beulich
2019-01-07 20:54             ` Christopher Clark
2018-12-01  1:32 ` [PATCH 16/25] argo: implement the notify op Christopher Clark
2018-12-13 14:06   ` Jan Beulich
2018-12-20  6:12     ` Christopher Clark
2018-12-20  8:39       ` Jan Beulich
2018-12-01  1:32 ` [PATCH 17/25] xsm, argo: XSM control for any access to argo by a domain Christopher Clark
2018-12-01  1:32 ` [PATCH 18/25] argo: limit the max number of rings that a domain may register Christopher Clark
2018-12-13 14:08   ` Jan Beulich
2018-12-01  1:32 ` [PATCH 19/25] argo: limit the max number of notify requests in a single operation Christopher Clark
2018-12-01  1:32 ` [PATCH 20/25] argo, xsm: notify: don't describe rings that cannot be sent to Christopher Clark
2018-12-01  1:33 ` [PATCH 21/25] argo: add array_index_nospec to guard the result of the hash func Christopher Clark
2018-12-13 14:10   ` Jan Beulich
2018-12-01  1:33 ` [PATCH 22/25] xen/evtchn: expose send_guest_global_virq for use within Xen Christopher Clark
2018-12-13 14:12   ` Jan Beulich
2018-12-01  1:33 ` [PATCH 23/25] argo: signal x86 HVM and ARM via VIRQ Christopher Clark
2018-12-02 19:55   ` Julien Grall
2018-12-04  9:03     ` Christopher Clark
2018-12-04  9:16       ` Paul Durrant
2018-12-12 14:49         ` James
2018-12-11 14:15       ` Julien Grall
2018-12-13 14:16   ` Jan Beulich
2018-12-20  6:20     ` Christopher Clark
2018-12-01  1:33 ` [PATCH 24/25] argo: unmap rings on suspend and send signal to ring-owners on resume Christopher Clark
2018-12-13 14:26   ` Jan Beulich
2018-12-20  6:25     ` Christopher Clark
2018-12-01  1:33 ` [PATCH 25/25] argo: implement the get_config op to query notification config Christopher Clark
2018-12-13 14:32   ` Jan Beulich
2018-12-03 16:49 ` [PATCH 00/25] Argo: hypervisor-mediated interdomain communication Chris Patterson
2018-12-04  9:00   ` Christopher Clark
2018-12-11 22:13     ` Chris Patterson

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