From: Yi Sun <yi.y.sun@linux.intel.com>
To: xen-devel@lists.xenproject.org
Cc: "Wei Liu" <wei.liu2@citrix.com>,
"Yi Sun" <yi.y.sun@linux.intel.com>,
"Andrew Cooper" <andrew.cooper3@citrix.com>,
"Jan Beulich" <jbeulich@suse.com>,
"Chao Peng" <chao.p.peng@linux.intel.com>,
"Roger Pau Monné" <roger.pau@citrix.com>
Subject: [PATCH v10 01/11] x86: implement get hw info flow for MBA
Date: Tue, 19 Dec 2017 08:42:12 +0800 [thread overview]
Message-ID: <1513644142-50972-2-git-send-email-yi.y.sun@linux.intel.com> (raw)
In-Reply-To: <1513644142-50972-1-git-send-email-yi.y.sun@linux.intel.com>
This patch implements get HW info flow for MBA including its callback
function and sysctl interface.
Signed-off-by: Yi Sun <yi.y.sun@linux.intel.com>
---
CC: Jan Beulich <jbeulich@suse.com>
CC: Andrew Cooper <andrew.cooper3@citrix.com>
CC: Wei Liu <wei.liu2@citrix.com>
CC: Roger Pau Monné <roger.pau@citrix.com>
CC: Chao Peng <chao.p.peng@linux.intel.com>
v10:
- declare data array in top case to avoid gcc 7.2 warning.
(suggested by Jan Beulich)
v7:
- change 'PSR_INFO_IDX_MBA_FLAG' to 'PSR_INFO_IDX_MBA_FLAGS'.
(suggested by Jan Beulich)
v5:
- use ASSERT in 'mba_get_feat_info'.
(suggested by Roger Pau Monné)
- correct initialization format of 'data[PSR_INFO_ARRAY_SIZE]'.
(suggested by Roger Pau Monné and Jan Beulich)
v4:
- remove 'ALLOC_' from macro names.
(suggested by Roger Pau Monné)
- initialize 'data[PSR_INFO_ARRAY_SIZE]' to 0 to prevent to leak stack data.
(suggested by Roger Pau Monné)
v3:
- replace 'PSR_VAL_TYPE_MBA' to 'PSR_TYPE_MBA_THRTL'.
(suggested by Roger Pau Monné)
v2:
- use 'XEN_SYSCTL_PSR_MBA_LINEAR' to set MBA feature HW info.
(suggested by Chao Peng)
v1:
- sort 'PSR_INFO_IDX_' macros as feature.
(suggested by Chao Peng)
- rename 'PSR_INFO_IDX_MBA_LINEAR' to 'PSR_INFO_IDX_MBA_FLAG'.
- rename 'linear' in 'struct mba_info' to 'flags' for future extension.
---
Config.mk | 20 ++++++++++----------
xen/arch/x86/psr.c | 14 +++++++++++++-
xen/arch/x86/sysctl.c | 27 +++++++++++++++++++++------
xen/include/asm-x86/psr.h | 2 ++
xen/include/public/sysctl.h | 8 ++++++++
5 files changed, 54 insertions(+), 17 deletions(-)
diff --git a/Config.mk b/Config.mk
index 51adc27..18f5c34 100644
--- a/Config.mk
+++ b/Config.mk
@@ -260,17 +260,17 @@ QEMU_TRADITIONAL_REVISION ?= $(QEMU_TAG)
endif
ifeq ($(GIT_HTTP),y)
-OVMF_UPSTREAM_URL ?= http://xenbits.xen.org/git-http/ovmf.git
-QEMU_UPSTREAM_URL ?= http://xenbits.xen.org/git-http/qemu-xen.git
-QEMU_TRADITIONAL_URL ?= http://xenbits.xen.org/git-http/qemu-xen-traditional.git
-SEABIOS_UPSTREAM_URL ?= http://xenbits.xen.org/git-http/seabios.git
-MINIOS_UPSTREAM_URL ?= http://xenbits.xen.org/git-http/mini-os.git
+OVMF_UPSTREAM_URL ?= http://vt-sync.sh.intel.com/git-http/ovmf.git
+QEMU_UPSTREAM_URL ?= http://vt-sync.sh.intel.com/git-http/qemu-xen.git
+QEMU_TRADITIONAL_URL ?= http://vt-sync.sh.intel.com/git-http/qemu-xen-traditional.git
+SEABIOS_UPSTREAM_URL ?= http://vt-sync.sh.intel.com/git-http/seabios.git
+MINIOS_UPSTREAM_URL ?= http://vt-sync.sh.intel.com/git-http/mini-os.git
else
-OVMF_UPSTREAM_URL ?= git://xenbits.xen.org/ovmf.git
-QEMU_UPSTREAM_URL ?= git://xenbits.xen.org/qemu-xen.git
-QEMU_TRADITIONAL_URL ?= git://xenbits.xen.org/qemu-xen-traditional.git
-SEABIOS_UPSTREAM_URL ?= git://xenbits.xen.org/seabios.git
-MINIOS_UPSTREAM_URL ?= git://xenbits.xen.org/mini-os.git
+OVMF_UPSTREAM_URL ?= git://vt-sync.sh.intel.com/ovmf.git
+QEMU_UPSTREAM_URL ?= git://vt-sync.sh.intel.com/qemu-xen.git
+QEMU_TRADITIONAL_URL ?= git://vt-sync.sh.intel.com/qemu-xen-traditional.git
+SEABIOS_UPSTREAM_URL ?= git://vt-sync.sh.intel.com/seabios.git
+MINIOS_UPSTREAM_URL ?= git://vt-sync.sh.intel.com/mini-os.git
endif
OVMF_UPSTREAM_REVISION ?= 947f3737abf65fda63f3ffd97fddfa6986986868
QEMU_UPSTREAM_REVISION ?= master
diff --git a/xen/arch/x86/psr.c b/xen/arch/x86/psr.c
index 872bade..a4901d8 100644
--- a/xen/arch/x86/psr.c
+++ b/xen/arch/x86/psr.c
@@ -263,6 +263,10 @@ static enum psr_feat_type psr_type_to_feat_type(enum psr_type type)
feat_type = FEAT_TYPE_L2_CAT;
break;
+ case PSR_TYPE_MBA_THRTL:
+ feat_type = FEAT_TYPE_MBA;
+ break;
+
default:
ASSERT_UNREACHABLE();
}
@@ -481,7 +485,15 @@ static const struct feat_props l2_cat_props = {
static bool mba_get_feat_info(const struct feat_node *feat,
uint32_t data[], unsigned int array_len)
{
- return false;
+ ASSERT(array_len == PSR_INFO_ARRAY_SIZE);
+
+ data[PSR_INFO_IDX_COS_MAX] = feat->cos_max;
+ data[PSR_INFO_IDX_MBA_THRTL_MAX] = feat->mba.thrtl_max;
+
+ if ( feat->mba.linear )
+ data[PSR_INFO_IDX_MBA_FLAGS] |= XEN_SYSCTL_PSR_MBA_LINEAR;
+
+ return true;
}
static void mba_write_msr(unsigned int cos, uint32_t val,
diff --git a/xen/arch/x86/sysctl.c b/xen/arch/x86/sysctl.c
index 6d48cac..4d372db 100644
--- a/xen/arch/x86/sysctl.c
+++ b/xen/arch/x86/sysctl.c
@@ -172,12 +172,12 @@ long arch_do_sysctl(
break;
case XEN_SYSCTL_psr_alloc:
+ {
+ uint32_t data[PSR_INFO_ARRAY_SIZE] = { };
+
switch ( sysctl->u.psr_alloc.cmd )
{
- uint32_t data[PSR_INFO_ARRAY_SIZE];
-
case XEN_SYSCTL_PSR_get_l3_info:
- {
ret = psr_get_info(sysctl->u.psr_alloc.target,
PSR_TYPE_L3_CBM, data, ARRAY_SIZE(data));
if ( ret )
@@ -193,10 +193,8 @@ long arch_do_sysctl(
if ( __copy_field_to_guest(u_sysctl, sysctl, u.psr_alloc) )
ret = -EFAULT;
break;
- }
case XEN_SYSCTL_PSR_get_l2_info:
- {
ret = psr_get_info(sysctl->u.psr_alloc.target,
PSR_TYPE_L2_CBM, data, ARRAY_SIZE(data));
if ( ret )
@@ -212,13 +210,30 @@ long arch_do_sysctl(
if ( __copy_field_to_guest(u_sysctl, sysctl, u.psr_alloc) )
ret = -EFAULT;
break;
- }
+
+ case XEN_SYSCTL_PSR_get_mba_info:
+ ret = psr_get_info(sysctl->u.psr_alloc.target,
+ PSR_TYPE_MBA_THRTL, data, ARRAY_SIZE(data));
+ if ( ret )
+ break;
+
+ sysctl->u.psr_alloc.u.mba_info.cos_max =
+ data[PSR_INFO_IDX_COS_MAX];
+ sysctl->u.psr_alloc.u.mba_info.thrtl_max =
+ data[PSR_INFO_IDX_MBA_THRTL_MAX];
+ sysctl->u.psr_alloc.u.mba_info.flags =
+ data[PSR_INFO_IDX_MBA_FLAGS];
+
+ if ( __copy_field_to_guest(u_sysctl, sysctl, u.psr_alloc) )
+ ret = -EFAULT;
+ break;
default:
ret = -EOPNOTSUPP;
break;
}
break;
+ }
case XEN_SYSCTL_get_cpu_levelling_caps:
sysctl->u.cpu_levelling_caps.caps = levelling_caps;
diff --git a/xen/include/asm-x86/psr.h b/xen/include/asm-x86/psr.h
index 3cf544a..c2257da 100644
--- a/xen/include/asm-x86/psr.h
+++ b/xen/include/asm-x86/psr.h
@@ -39,6 +39,8 @@
#define PSR_INFO_IDX_COS_MAX 0
#define PSR_INFO_IDX_CAT_CBM_LEN 1
#define PSR_INFO_IDX_CAT_FLAGS 2
+#define PSR_INFO_IDX_MBA_THRTL_MAX 1
+#define PSR_INFO_IDX_MBA_FLAGS 2
#define PSR_INFO_ARRAY_SIZE 3
struct psr_cmt_l3 {
diff --git a/xen/include/public/sysctl.h b/xen/include/public/sysctl.h
index a50e345..f7f26c3 100644
--- a/xen/include/public/sysctl.h
+++ b/xen/include/public/sysctl.h
@@ -698,6 +698,7 @@ struct xen_sysctl_pcitopoinfo {
#define XEN_SYSCTL_PSR_get_l3_info 0
#define XEN_SYSCTL_PSR_get_l2_info 1
+#define XEN_SYSCTL_PSR_get_mba_info 2
struct xen_sysctl_psr_alloc {
uint32_t cmd; /* IN: XEN_SYSCTL_PSR_* */
uint32_t target; /* IN */
@@ -708,6 +709,13 @@ struct xen_sysctl_psr_alloc {
#define XEN_SYSCTL_PSR_CAT_L3_CDP (1u << 0)
uint32_t flags; /* OUT: CAT flags */
} cat_info;
+
+ struct {
+ uint32_t thrtl_max; /* OUT: Maximum throttle */
+ uint32_t cos_max; /* OUT: Maximum COS */
+#define XEN_SYSCTL_PSR_MBA_LINEAR (1u << 0)
+ uint32_t flags; /* OUT: MBA flags */
+ } mba_info;
} u;
};
--
1.9.1
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next prev parent reply other threads:[~2017-12-19 1:49 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-19 0:42 [PATCH v10 00/11] Enable Memory Bandwidth Allocation in Xen Yi Sun
2017-12-19 0:42 ` Yi Sun [this message]
2017-12-20 8:56 ` [PATCH v10 01/11] x86: implement get hw info flow for MBA Jan Beulich
2017-12-20 10:32 ` Jan Beulich
2017-12-21 2:30 ` Yi Sun
2017-12-19 0:42 ` [PATCH v10 02/11] x86: implement get value interface " Yi Sun
2017-12-19 0:42 ` [PATCH v10 03/11] x86: implement set value flow " Yi Sun
2017-12-19 0:42 ` [PATCH v10 04/11] tools: create general interfaces to support psr allocation features Yi Sun
2017-12-19 0:42 ` [PATCH v10 05/11] tools: implement the new libxc get hw info interface Yi Sun
2017-12-19 0:42 ` [PATCH v10 06/11] tools: implement the new libxl " Yi Sun
2017-12-19 0:42 ` [PATCH v10 07/11] tools: implement the new xl " Yi Sun
2017-12-19 0:42 ` [PATCH v10 08/11] tools: rename 'xc_psr_cat_type' to 'xc_psr_type' Yi Sun
2017-12-19 0:42 ` [PATCH v10 09/11] tools: implement new generic get value interface and MBA get value command Yi Sun
2017-12-19 0:42 ` [PATCH v10 10/11] tools: implement new generic set value interface and MBA set " Yi Sun
2018-01-08 12:23 ` Wei Liu
2017-12-19 0:42 ` [PATCH v10 11/11] docs: add MBA description in docs Yi Sun
2017-12-20 9:11 ` [PATCH v10 00/11] Enable Memory Bandwidth Allocation in Xen Jan Beulich
2018-01-08 4:28 ` Yi Sun
2018-01-08 12:25 ` Wei Liu
2018-01-09 0:31 ` Yi Sun
2018-01-18 11:10 ` Wei Liu
2018-01-18 11:31 ` Wei Liu
2018-01-18 11:50 ` Wei Liu
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