From: dongxiao.xu@intel.com
To: xen-devel@lists.xen.org
Subject: [PATCH 4/8] x86: dynamically attach/detach CQM service for a guest
Date: Wed, 20 Nov 2013 11:27:34 +0800 [thread overview]
Message-ID: <1384918058-128466-5-git-send-email-dongxiao.xu@intel.com> (raw)
In-Reply-To: <1384918058-128466-1-git-send-email-dongxiao.xu@intel.com>
From: Dongxiao Xu <dongxiao.xu@intel.com>
Add hypervisor side support for dynamically attach and detach CQM
services for a certain guest.
Signed-off-by: Jiongxi Li <jiongxi.li@intel.com>
Signed-off-by: Dongxiao Xu <dongxiao.xu@intel.com>
---
xen/arch/x86/domctl.c | 66 +++++++++++++++++++++++++++++++++++++++++++
xen/include/public/domctl.h | 15 ++++++++++
2 files changed, 81 insertions(+)
diff --git a/xen/arch/x86/domctl.c b/xen/arch/x86/domctl.c
index f7e4586..df6a373 100644
--- a/xen/arch/x86/domctl.c
+++ b/xen/arch/x86/domctl.c
@@ -35,6 +35,7 @@
#include <asm/mem_sharing.h>
#include <asm/xstate.h>
#include <asm/debugger.h>
+#include <asm/pqos.h>
static int gdbsx_guest_mem_io(
domid_t domid, struct xen_domctl_gdbsx_memio *iop)
@@ -1223,6 +1224,71 @@ long arch_do_domctl(
}
break;
+ case XEN_DOMCTL_attach_pqos:
+ {
+ struct domain *d;
+
+ if ( (d = rcu_lock_domain_by_id(domctl->domain)) == NULL )
+ {
+ ret = -EBUSY;
+ break;
+ }
+
+ if ( domctl->u.qos_res.flags & XEN_DOMCTL_ADF_pqos_cqm )
+ {
+ if ( !system_support_cqm() )
+ ret = -ENODEV;
+ else if ( d->arch.pqos_cqm_rmid > 0 )
+ ret = -EINVAL;
+ else
+ {
+ ret = 0;
+ d->arch.pqos_cqm_rmid = alloc_cqm_resource(d->domain_id);
+ if ( d->arch.pqos_cqm_rmid <= 0 )
+ {
+ /* set to default value */
+ d->arch.pqos_cqm_rmid = 0;
+ ret = -ENODEV;
+ }
+ }
+ }
+ else
+ ret = -EINVAL;
+
+ rcu_unlock_domain(d);
+ }
+ break;
+
+ case XEN_DOMCTL_detach_pqos:
+ {
+ struct domain *d;
+
+ if ( (d = rcu_lock_domain_by_id(domctl->domain)) == NULL )
+ {
+ ret = -EBUSY;
+ break;
+ }
+
+ if ( domctl->u.qos_res.flags & XEN_DOMCTL_ADF_pqos_cqm )
+ {
+ if ( !system_support_cqm() )
+ ret = -ENODEV;
+ else if ( d->arch.pqos_cqm_rmid > 0 )
+ {
+ free_cqm_resource(d->domain_id);
+ d->arch.pqos_cqm_rmid = 0;
+ ret = 0;
+ }
+ else
+ ret = -EINVAL;
+ }
+ else
+ ret = -EINVAL;
+
+ rcu_unlock_domain(d);
+ }
+ break;
+
default:
ret = iommu_do_domctl(domctl, d, u_domctl);
break;
diff --git a/xen/include/public/domctl.h b/xen/include/public/domctl.h
index 47a850a..4fe21db 100644
--- a/xen/include/public/domctl.h
+++ b/xen/include/public/domctl.h
@@ -872,6 +872,17 @@ struct xen_domctl_set_max_evtchn {
typedef struct xen_domctl_set_max_evtchn xen_domctl_set_max_evtchn_t;
DEFINE_XEN_GUEST_HANDLE(xen_domctl_set_max_evtchn_t);
+/* XEN_DOMCTL_attach_pqos */
+/* XEN_DOMCTL_detach_pqos */
+struct xen_domctl_qos_resource {
+ /* Attach or detach flag for cqm */
+#define _XEN_DOMCTL_ADF_pqos_cqm 0
+#define XEN_DOMCTL_ADF_pqos_cqm (1U<<_XEN_DOMCTL_ADF_pqos_cqm)
+ uint32_t flags;
+};
+typedef struct xen_domctl_qos_resource xen_domctl_qos_resource_t;
+DEFINE_XEN_GUEST_HANDLE(xen_domctl_qos_resource_t);
+
struct xen_domctl {
uint32_t cmd;
#define XEN_DOMCTL_createdomain 1
@@ -941,6 +952,9 @@ struct xen_domctl {
#define XEN_DOMCTL_setnodeaffinity 68
#define XEN_DOMCTL_getnodeaffinity 69
#define XEN_DOMCTL_set_max_evtchn 70
+#define XEN_DOMCTL_attach_pqos 71
+#define XEN_DOMCTL_detach_pqos 72
+#define XEN_DOMCTL_list_pqos 73
#define XEN_DOMCTL_gdbsx_guestmemio 1000
#define XEN_DOMCTL_gdbsx_pausevcpu 1001
#define XEN_DOMCTL_gdbsx_unpausevcpu 1002
@@ -1001,6 +1015,7 @@ struct xen_domctl {
struct xen_domctl_set_broken_page_p2m set_broken_page_p2m;
struct xen_domctl_gdbsx_pauseunp_vcpu gdbsx_pauseunp_vcpu;
struct xen_domctl_gdbsx_domstatus gdbsx_domstatus;
+ struct xen_domctl_qos_resource qos_res;
uint8_t pad[128];
} u;
};
--
1.7.9.5
next prev parent reply other threads:[~2013-11-20 3:27 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-20 3:27 [PATCH 0/8] enable Cache QoS Monitoring (CQM) feature dongxiao.xu
2013-11-20 3:27 ` [PATCH 1/8] x86: detect and initialize Cache QoS Monitoring feature dongxiao.xu
2013-11-20 11:11 ` Andrew Cooper
2013-11-20 12:40 ` Xu, Dongxiao
2013-11-20 3:27 ` [PATCH 2/8] x86: handle CQM resource when creating/destroying guests dongxiao.xu
2013-11-20 11:32 ` Andrew Cooper
2013-11-20 12:49 ` Xu, Dongxiao
2013-11-20 3:27 ` [PATCH 3/8] tools: " dongxiao.xu
2013-11-20 3:27 ` dongxiao.xu [this message]
2013-11-20 11:44 ` [PATCH 4/8] x86: dynamically attach/detach CQM service for a guest Andrew Cooper
2013-11-20 13:19 ` Xu, Dongxiao
2013-11-20 3:27 ` [PATCH 5/8] tools: " dongxiao.xu
2013-11-20 3:27 ` [PATCH 6/8] x86: get per domain CQM information dongxiao.xu
2013-11-20 11:56 ` Andrew Cooper
2013-11-20 13:22 ` Xu, Dongxiao
2013-11-20 3:27 ` [PATCH 7/8] tools: " dongxiao.xu
2013-11-20 3:27 ` [PATCH 8/8] x86: enable CQM monitoring for each domain RMID dongxiao.xu
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