[libvirt] [PATCH v2 1/1] cpu_map.xml: add cmt/mbm feature to x86
Some Intel processor families (e.g. the Intel Xeon processor E5 v3 family) introduced some PQos (Platform Qos) features, including CMT (Cache Monitoring technology) and MBM (Memory Bandwidth Monitoring), to monitor or control shared resource. This patch add them into x86 part of cpu_map.xml to be used for applications based on libvirt to get cpu capabilities. For example, Nova in OpenStack schedules guests based on the CPU features that the host has. Signed-off-by: Qiaowei Ren <qiaowei.ren@intel.com> --- src/cpu/cpu_map.xml | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/src/cpu/cpu_map.xml b/src/cpu/cpu_map.xml index bf2dfc6..6da8321 100644 --- a/src/cpu/cpu_map.xml +++ b/src/cpu/cpu_map.xml @@ -224,6 +224,9 @@ <feature name='rtm'> <cpuid eax_in='0x07' ebx='0x00000800'/> </feature> + <feature name='cmt'> + <cpuid eax_in='0x07' ebx='0x00001000'/> + </feature> <feature name='mpx'> <cpuid eax_in='0x07' ebx='0x00004000'/> </feature> @@ -266,6 +269,14 @@ <cpuid eax_in='0x0d' ecx_in='0x01' eax='0x00000008'/> </feature> + <!-- cpuid level 0x0000000f:1 (edx) --> + <feature name='mbm_total'> <!-- LLC Total MBM monitoring --> + <cpuid eax_in='0x0f' ecx_in='0x01' edx='0x00000002'/> + </feature> + <feature name='mbm_local'> <!-- LLC Local MBM monitoring --> + <cpuid eax_in='0x0f' ecx_in='0x01' edx='0x00000004'/> + </feature> + <!-- extended features, EDX --> <feature name='syscall'> <!-- CPUID_EXT2_SYSCALL --> <cpuid eax_in='0x80000001' edx='0x00000800'/> -- 1.9.1
On Fri, Jun 24, 2016 at 08:44:50 +0800, Qiaowei Ren wrote:
Some Intel processor families (e.g. the Intel Xeon processor E5 v3 family) introduced some PQos (Platform Qos) features, including CMT (Cache Monitoring technology) and MBM (Memory Bandwidth Monitoring), to monitor or control shared resource. This patch add them into x86 part of cpu_map.xml to be used for applications based on libvirt to get cpu capabilities. For example, Nova in OpenStack schedules guests based on the CPU features that the host has.
Signed-off-by: Qiaowei Ren <qiaowei.ren@intel.com> --- src/cpu/cpu_map.xml | 11 +++++++++++ 1 file changed, 11 insertions(+)
Well, you forgot to run make check. ACK and pushed with the following patch squashed in. Jirka diff --git i/tests/cputestdata/x86-cpuid-Xeon-E5-2630-guest.xml w/tests/cputestdata/x86-cpuid-Xeon-E5-2630-guest.xml index 9ff63d7..b02d963 100644 --- i/tests/cputestdata/x86-cpuid-Xeon-E5-2630-guest.xml +++ w/tests/cputestdata/x86-cpuid-Xeon-E5-2630-guest.xml @@ -24,6 +24,7 @@ <feature policy='require' name='rdrand'/> <feature policy='require' name='arat'/> <feature policy='require' name='tsc_adjust'/> + <feature policy='require' name='cmt'/> <feature policy='require' name='xsaveopt'/> <feature policy='require' name='pdpe1gb'/> <feature policy='require' name='abm'/> diff --git i/tests/cputestdata/x86-cpuid-Xeon-E5-2630-host.xml w/tests/cputestdata/x86-cpuid-Xeon-E5-2630-host.xml index a651683..431a737 100644 --- i/tests/cputestdata/x86-cpuid-Xeon-E5-2630-host.xml +++ w/tests/cputestdata/x86-cpuid-Xeon-E5-2630-host.xml @@ -24,6 +24,7 @@ <feature name='rdrand'/> <feature name='arat'/> <feature name='tsc_adjust'/> + <feature name='cmt'/> <feature name='xsaveopt'/> <feature name='pdpe1gb'/> <feature name='abm'/> diff --git i/tests/cputestdata/x86-cpuid-Xeon-E5-2650-guest.xml w/tests/cputestdata/x86-cpuid-Xeon-E5-2650-guest.xml index 9ff63d7..b02d963 100644 --- i/tests/cputestdata/x86-cpuid-Xeon-E5-2650-guest.xml +++ w/tests/cputestdata/x86-cpuid-Xeon-E5-2650-guest.xml @@ -24,6 +24,7 @@ <feature policy='require' name='rdrand'/> <feature policy='require' name='arat'/> <feature policy='require' name='tsc_adjust'/> + <feature policy='require' name='cmt'/> <feature policy='require' name='xsaveopt'/> <feature policy='require' name='pdpe1gb'/> <feature policy='require' name='abm'/> diff --git i/tests/cputestdata/x86-cpuid-Xeon-E5-2650-host.xml w/tests/cputestdata/x86-cpuid-Xeon-E5-2650-host.xml index a651683..431a737 100644 --- i/tests/cputestdata/x86-cpuid-Xeon-E5-2650-host.xml +++ w/tests/cputestdata/x86-cpuid-Xeon-E5-2650-host.xml @@ -24,6 +24,7 @@ <feature name='rdrand'/> <feature name='arat'/> <feature name='tsc_adjust'/> + <feature name='cmt'/> <feature name='xsaveopt'/> <feature name='pdpe1gb'/> <feature name='abm'/>
participants (2)
-
Jiri Denemark -
Qiaowei Ren