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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v9.1 06/16] x86: implement get hw info flow for MBA
This patch implements get HW info flow for MBA including its callback
function and sysctl interface.
Signed-off-by: Yi Sun <yi.y.sun@xxxxxxxxxxxxxxx>
Reviewed-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
---
CC: Jan Beulich <jbeulich@xxxxxxxx>
CC: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CC: Wei Liu <wei.liu2@xxxxxxxxxx>
CC: Roger Pau Monné <roger.pau@xxxxxxxxxx>
CC: Chao Peng <chao.p.peng@xxxxxxxxxxxxxxx>
v9.1:
- declare data array in every case to avoid gcc 7.2 warning.
(found 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, 58 insertions(+), 13 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..22f8d76 100644
--- a/xen/arch/x86/sysctl.c
+++ b/xen/arch/x86/sysctl.c
@@ -174,10 +174,10 @@ long arch_do_sysctl(
case XEN_SYSCTL_psr_alloc:
switch ( sysctl->u.psr_alloc.cmd )
{
- uint32_t data[PSR_INFO_ARRAY_SIZE];
-
case XEN_SYSCTL_PSR_get_l3_info:
{
+ uint32_t data[PSR_INFO_ARRAY_SIZE] = { };
+
ret = psr_get_info(sysctl->u.psr_alloc.target,
PSR_TYPE_L3_CBM, data, ARRAY_SIZE(data));
if ( ret )
@@ -197,6 +197,8 @@ long arch_do_sysctl(
case XEN_SYSCTL_PSR_get_l2_info:
{
+ uint32_t data[PSR_INFO_ARRAY_SIZE] = { };
+
ret = psr_get_info(sysctl->u.psr_alloc.target,
PSR_TYPE_L2_CBM, data, ARRAY_SIZE(data));
if ( ret )
@@ -214,6 +216,27 @@ long arch_do_sysctl(
break;
}
+ case XEN_SYSCTL_PSR_get_mba_info:
+ {
+ uint32_t data[PSR_INFO_ARRAY_SIZE] = { };
+
+ 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;
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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