From: Haozhong Zhang <haozhong.zhang@intel.com>
To: xen-devel@lists.xen.org
Cc: Haozhong Zhang <haozhong.zhang@intel.com>,
Kevin Tian <kevin.tian@intel.com>, Wei Liu <wei.liu2@citrix.com>,
Ian Campbell <ian.campbell@citrix.com>,
Stefano Stabellini <stefano.stabellini@eu.citrix.com>,
Jun Nakajima <jun.nakajima@intel.com>,
Andrew Cooper <andrew.cooper3@citrix.com>,
Ian Jackson <ian.jackson@eu.citrix.com>,
Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com>,
Jan Beulich <jbeulich@suse.com>, Keir Fraser <keir@xen.org>,
Boris Ostrovsky <boris.ostrovsky@oracle.com>,
Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Subject: [PATCH 00/13] Add VMX TSC scaling support
Date: Mon, 28 Sep 2015 15:13:45 +0800 [thread overview]
Message-ID: <1443424438-13404-1-git-send-email-haozhong.zhang@intel.com> (raw)
This patchset adds support for VMX TSC scaling feature which is
available on Intel Skylake CPU. The specification of VMX TSC scaling
can be found at
http://www.intel.com/content/www/us/en/processors/timestamp-counter-scaling-virtualization-white-paper.html
VMX TSC scaling allows guest TSC which is read by guest rdtsc(p)
instructions increases in a rate that is customized by the hypervisor
and can be different than the host TSC rate. Basically, VMX TSC
scaling adds a 64-bit field called TSC multiplier in VMCS so that, if
VMX TSC scaling is enabled, TSC read by guest rdtsc(p) instructions
will be calculated by the following formula:
guest EDX:EAX = (Host TSC * TSC multiplier) >> 48 + VMX TSC Offset
where, Host TSC = Host MSR_IA32_TSC + Host MSR_IA32_TSC_ADJUST.
This patchset is composed of following four parts.
1. PATCH 01 - 02 fix bugs in tsc_get_info() which could result in
errors when VMX TSC scaling is used.
2. PATCH 03 - 09 add/move the common parts of VMX TSC scaling and
SVM TSC ratio to hvm.c and x86/time.c.
3. PATCH 10 - 12 implement the VMX-specific code for supporting VMX
TSC scaling.
4. PATCH 13 adapts libxl for VMX TSC scaling (as well as SVM TSC
ratio).
Haozhong Zhang (13):
x86/time.c: Use system time to calculate elapsed_nsec in
tsc_get_info()
x86/time.c: Get the correct guest TSC rate in tsc_get_info()
x86/hvm: Collect information of TSC scaling ratio
x86/hvm: Setup TSC scaling ratio
x86/hvm: Replace architecture TSC scaling by a common function
x86/hvm: Scale host TSC when setting/getting guest TSC
x86/hvm: Move saving/loading vcpu's TSC to common code
x86/hvm: Detect TSC scaling through hvm_funcs in tsc_set_info()
x86/time.c: Scale host TSC in pvclock properly
vmx: Detect and initialize VMX RDTSC(P) scaling
vmx: Use scaled host TSC to calculate TSC offset
vmx: Add a call-back to apply TSC scaling ratio to hardware
tools/libxl: Add 'vtsc_khz' option to set guest TSC rate
tools/libxl/libxl_types.idl | 1 +
tools/libxl/libxl_x86.c | 4 +-
tools/libxl/xl_cmdimpl.c | 22 ++++++++
xen/arch/x86/hvm/hvm.c | 110 +++++++++++++++++++++++++++++++++----
xen/arch/x86/hvm/svm/svm.c | 25 ++++++---
xen/arch/x86/hvm/vmx/vmcs.c | 11 +++-
xen/arch/x86/hvm/vmx/vmx.c | 39 +++++++++++--
xen/arch/x86/time.c | 33 ++++++++---
xen/include/asm-x86/domain.h | 2 +
xen/include/asm-x86/hvm/hvm.h | 19 +++++++
xen/include/asm-x86/hvm/svm/svm.h | 4 +-
xen/include/asm-x86/hvm/vmx/vmcs.h | 7 +++
12 files changed, 240 insertions(+), 37 deletions(-)
--
2.4.8
next reply other threads:[~2015-09-28 7:13 UTC|newest]
Thread overview: 117+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-28 7:13 Haozhong Zhang [this message]
2015-09-28 7:13 ` [PATCH 01/13] x86/time.c: Use system time to calculate elapsed_nsec in tsc_get_info() Haozhong Zhang
2015-10-09 6:51 ` Jan Beulich
2015-10-09 13:41 ` Boris Ostrovsky
2015-10-09 14:00 ` Haozhong Zhang
2015-10-09 15:11 ` Jan Beulich
2015-10-09 16:09 ` Boris Ostrovsky
2015-10-09 16:19 ` Jan Beulich
2015-10-09 16:31 ` Boris Ostrovsky
2015-10-09 16:51 ` Haozhong Zhang
2015-10-09 18:59 ` Boris Ostrovsky
2015-10-09 14:39 ` Jan Beulich
2015-10-09 15:37 ` Boris Ostrovsky
2015-10-09 16:39 ` Haozhong Zhang
2015-10-09 16:44 ` Boris Ostrovsky
2015-10-09 14:35 ` Haozhong Zhang
2015-10-09 14:43 ` Jan Beulich
2015-10-09 15:56 ` Boris Ostrovsky
2015-10-14 2:45 ` Haozhong Zhang
2015-10-14 9:40 ` Jan Beulich
2015-10-14 10:00 ` Haozhong Zhang
2015-10-14 10:20 ` Jan Beulich
2015-10-14 10:24 ` Haozhong Zhang
2015-09-28 7:13 ` [PATCH 02/13] x86/time.c: Get the correct guest TSC rate " Haozhong Zhang
2015-09-28 7:13 ` [PATCH 03/13] x86/hvm: Collect information of TSC scaling ratio Haozhong Zhang
2015-10-22 12:53 ` Jan Beulich
2015-10-22 14:40 ` Haozhong Zhang
2015-10-22 14:51 ` Jan Beulich
2015-10-22 15:57 ` Haozhong Zhang
2015-09-28 7:13 ` [PATCH 04/13] x86/hvm: Setup " Haozhong Zhang
2015-10-22 13:13 ` Jan Beulich
2015-10-22 15:55 ` Haozhong Zhang
2015-10-22 16:05 ` Jan Beulich
2015-10-22 16:39 ` Haozhong Zhang
2015-10-23 7:44 ` Haozhong Zhang
2015-10-23 7:59 ` Jan Beulich
2015-10-23 8:18 ` Haozhong Zhang
2015-10-23 8:31 ` Jan Beulich
2015-10-23 8:40 ` Haozhong Zhang
2015-10-23 9:18 ` Jan Beulich
2015-09-28 7:13 ` [PATCH 05/13] x86/hvm: Replace architecture TSC scaling by a common function Haozhong Zhang
2015-10-22 13:52 ` Jan Beulich
2015-10-23 0:49 ` Haozhong Zhang
2015-09-28 7:13 ` [PATCH 06/13] x86/hvm: Scale host TSC when setting/getting guest TSC Haozhong Zhang
2015-10-22 14:17 ` Jan Beulich
2015-10-22 15:44 ` Boris Ostrovsky
2015-10-22 16:23 ` Haozhong Zhang
2015-10-27 20:16 ` Aravind Gopalakrishnan
2015-10-28 1:51 ` Haozhong Zhang
2015-11-09 7:43 ` Haozhong Zhang
2015-11-12 13:50 ` George Dunlap
2015-10-22 16:03 ` Haozhong Zhang
2015-10-27 1:54 ` Haozhong Zhang
2015-10-27 8:15 ` Jan Beulich
2015-10-27 8:25 ` Haozhong Zhang
2015-10-27 8:44 ` Haozhong Zhang
2015-10-27 13:10 ` Boris Ostrovsky
2015-10-27 13:55 ` Boris Ostrovsky
2015-10-27 16:13 ` haozhong.zhang
2015-10-27 16:13 ` haozhong.zhang
2015-09-28 7:13 ` [PATCH 07/13] x86/hvm: Move saving/loading vcpu's TSC to common code Haozhong Zhang
2015-10-22 14:54 ` Jan Beulich
2015-09-28 7:13 ` [PATCH 08/13] x86/hvm: Detect TSC scaling through hvm_funcs in tsc_set_info() Haozhong Zhang
2015-10-22 15:01 ` Jan Beulich
2015-09-28 7:13 ` [PATCH 09/13] x86/time.c: Scale host TSC in pvclock properly Haozhong Zhang
2015-09-28 16:36 ` Boris Ostrovsky
2015-09-29 0:19 ` Haozhong Zhang
2015-10-22 15:50 ` Boris Ostrovsky
2015-10-22 16:44 ` Haozhong Zhang
2015-10-22 19:15 ` Boris Ostrovsky
2015-09-28 7:13 ` [PATCH 10/13] vmx: Detect and initialize VMX RDTSC(P) scaling Haozhong Zhang
2015-10-27 13:19 ` Jan Beulich
2015-10-27 16:17 ` Haozhong Zhang
2015-09-28 7:13 ` [PATCH 11/13] vmx: Use scaled host TSC to calculate TSC offset Haozhong Zhang
2015-10-22 15:55 ` Boris Ostrovsky
2015-10-22 17:12 ` Haozhong Zhang
2015-10-22 19:19 ` Boris Ostrovsky
2015-10-23 0:52 ` Haozhong Zhang
2015-10-27 13:29 ` Jan Beulich
2015-10-27 16:21 ` Haozhong Zhang
2015-09-28 7:13 ` [PATCH 12/13] vmx: Add a call-back to apply TSC scaling ratio to hardware Haozhong Zhang
2015-09-28 16:02 ` Boris Ostrovsky
2015-09-29 1:07 ` Haozhong Zhang
2015-09-29 9:33 ` Andrew Cooper
2015-09-29 10:02 ` Haozhong Zhang
2015-09-29 10:25 ` Andrew Cooper
2015-09-29 13:59 ` Haozhong Zhang
2015-10-27 13:33 ` Jan Beulich
2015-10-28 2:41 ` Haozhong Zhang
2015-09-28 7:13 ` [PATCH 13/13] tools/libxl: Add 'vtsc_khz' option to set guest TSC rate Haozhong Zhang
2015-09-28 11:47 ` Julien Grall
2015-09-28 12:11 ` Haozhong Zhang
2015-09-28 14:19 ` Wei Liu
2015-09-29 0:40 ` Haozhong Zhang
2015-09-29 9:20 ` Wei Liu
2015-09-29 9:50 ` Haozhong Zhang
2015-09-29 10:24 ` Julien Grall
2015-09-29 10:07 ` Ian Campbell
2015-09-29 10:33 ` Wei Liu
2015-09-29 12:57 ` Haozhong Zhang
2015-09-29 10:04 ` Ian Campbell
2015-09-29 10:13 ` Haozhong Zhang
2015-09-29 10:24 ` Andrew Cooper
2015-09-29 10:28 ` Ian Campbell
2015-09-29 10:31 ` Andrew Cooper
2015-09-29 13:53 ` Haozhong Zhang
2015-09-29 13:56 ` Andrew Cooper
2015-09-29 14:01 ` Haozhong Zhang
2015-09-29 14:37 ` Ian Campbell
2015-09-29 15:16 ` Haozhong Zhang
2015-09-28 10:51 ` [PATCH 00/13] Add VMX TSC scaling support Andrew Cooper
2015-09-28 13:48 ` Boris Ostrovsky
2015-11-22 17:54 ` Haozhong Zhang
2015-11-23 15:37 ` Boris Ostrovsky
2015-11-24 13:05 ` Haozhong Zhang
2015-11-24 14:19 ` Boris Ostrovsky
2015-11-24 14:25 ` Haozhong Zhang
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