From: Christopher Clark <christopher.w.clark@gmail.com>
To: xen-devel@lists.xenproject.org
Cc: Stefano Stabellini <sstabellini@kernel.org>,
Wei Liu <wei.liu2@citrix.com>,
James McKenzie <voreekf@madingley.org>,
Ross Philipson <ross.philipson@gmail.com>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
George Dunlap <George.Dunlap@eu.citrix.com>,
Andrew Cooper <andrew.cooper3@citrix.com>,
Jason Andryuk <jandryuk@gmail.com>,
Ian Jackson <ian.jackson@eu.citrix.com>,
Rich Persaud <persaur@gmail.com>, Tim Deegan <tim@xen.org>,
Daniel Smith <dpsmith@apertussolutions.com>,
Julien Grall <julien.grall@arm.com>,
Paul Durrant <paul.durrant@citrix.com>,
Jan Beulich <jbeulich@suse.com>,
Eric Chanudet <eric.chanudet@gmail.com>
Subject: [PATCH 25/25] argo: implement the get_config op to query notification config
Date: Fri, 30 Nov 2018 17:33:04 -0800 [thread overview]
Message-ID: <1543627984-21394-26-git-send-email-christopher.w.clark@gmail.com> (raw)
In-Reply-To: <1543627984-21394-1-git-send-email-christopher.w.clark@gmail.com>
Needed by a guest to obtain the evtchn port to use, if notifications are via
event channel, so: this operation will return the current notification method
active for the domain, and method-specific configuration data:
* event channel: port number
* VIRQ: virq number
Return structure has reserved space intentionally to for future alternative
notification mechanism to return data about both an IRQ number and bound VCPU.
Signed-off-by: Christopher Clark <christopher.clark6@baesystems.com>
---
xen/common/argo.c | 57 +++++++++++++++++++++++++++++++++++++++++++++++
xen/include/public/argo.h | 28 +++++++++++++++++++++++
2 files changed, 85 insertions(+)
diff --git a/xen/common/argo.c b/xen/common/argo.c
index 98de9a9..f6cc764 100644
--- a/xen/common/argo.c
+++ b/xen/common/argo.c
@@ -1656,6 +1656,46 @@ argo_sendv(struct domain *src_d, const argo_addr_t *src_addr,
return ( ret < 0 ) ? ret : len;
}
+static void
+argo_get_config(struct domain *d, argo_get_config_t *get_config)
+{
+ unsigned int method = argo_signal_method(d);
+
+ get_config->signal_method = method;
+
+ switch ( method )
+ {
+ case ARGO_SIGNAL_METHOD_EVTCHN:
+ {
+ read_lock(&argo_lock);
+ read_lock(&d->argo->lock);
+
+ get_config->signal.evtchn = d->argo->evtchn_port;
+
+ read_unlock(&d->argo->lock);
+ read_unlock(&argo_lock);
+
+ argo_dprintk("signal for dom:%d evtchn %u\n", d->domain_id,
+ get_config->signal.evtchn);
+
+ break;
+ }
+ case ARGO_SIGNAL_METHOD_VIRQ:
+ {
+ get_config->signal.virq = VIRQ_ARGO;
+
+ argo_dprintk("signal for dom:%d virq %u\n", d->domain_id,
+ get_config->signal.virq);
+ break;
+ }
+ default:
+ {
+ BUG();
+ break;
+ }
+ }
+}
+
long
do_argo_message_op(int cmd, XEN_GUEST_HANDLE_PARAM(void) arg1,
XEN_GUEST_HANDLE_PARAM(void) arg2,
@@ -1746,6 +1786,23 @@ do_argo_message_op(int cmd, XEN_GUEST_HANDLE_PARAM(void) arg1,
rc = argo_notify(d, ring_data_hnd);
break;
}
+ case ARGO_MESSAGE_OP_get_config:
+ {
+ XEN_GUEST_HANDLE_PARAM(argo_get_config_t) get_config_hnd =
+ guest_handle_cast(arg1, argo_get_config_t);
+ argo_get_config_t get_config;
+
+ if ( unlikely(!guest_handle_okay(get_config_hnd, 1)) )
+ break;
+
+ argo_get_config(d, &get_config);
+
+ if ( __copy_to_guest(get_config_hnd, &get_config, 1) )
+ break;
+
+ rc = 0;
+ break;
+ }
default:
rc = -ENOSYS;
break;
diff --git a/xen/include/public/argo.h b/xen/include/public/argo.h
index 710baa6..1e78ea0 100644
--- a/xen/include/public/argo.h
+++ b/xen/include/public/argo.h
@@ -20,6 +20,7 @@
#define __XEN_PUBLIC_ARGO_H__
#include "xen.h"
+#include "event_channel.h"
#define ARGO_RING_MAGIC 0xbd67e163e7777f2fULL
#define ARGO_RING_DATA_MAGIC 0xcce4d30fbc82e92aULL
@@ -153,6 +154,18 @@ struct argo_ring_message_header
#define ARGO_SIGNAL_METHOD_EVTCHN 1
#define ARGO_SIGNAL_METHOD_VIRQ 2
+typedef struct argo_get_config
+{
+ uint32_t signal_method;
+ union
+ {
+ evtchn_port_t evtchn;
+ uint32_t virq;
+ } signal;
+ uint32_t reserved;
+} argo_get_config_t;
+DEFINE_XEN_GUEST_HANDLE(argo_get_config_t);
+
/*
* Hypercall operations
*/
@@ -244,6 +257,21 @@ struct argo_ring_message_header
*/
#define ARGO_MESSAGE_OP_notify 4
+/*
+ * ARGO_MESSAGE_OP_get_config
+ *
+ * Queries Xen for argo configuration values.
+ *
+ * Used by a guest to obtain the signal method in use for Argo notifications
+ * and the event channel port or isa irq in use.
+ *
+ * arg1: XEN_GUEST_HANDLE(argo_get_config_t)
+ * arg2: NULL
+ * arg3: 0 (ZERO)
+ * arg4: 0 (ZERO)
+ */
+#define ARGO_MESSAGE_OP_get_config 6
+
/* The maximum size of a guest message that may be sent on an Argo ring. */
#define ARGO_MAX_MSG_SIZE ((ARGO_MAX_RING_SIZE) - \
(sizeof(struct argo_ring_message_header)) - \
--
2.1.4
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next prev parent reply other threads:[~2018-12-01 1:34 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
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 ` Christopher Clark [this message]
2018-12-13 14:32 ` [PATCH 25/25] argo: implement the get_config op to query notification config 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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