From: Andrew Cooper <andrew.cooper3@citrix.com>
To: Xen-devel <xen-devel@lists.xen.org>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>
Subject: [PATCH v4 00/26] x86: Improvements to cpuid handling for guests
Date: Wed, 23 Mar 2016 16:36:03 +0000 [thread overview]
Message-ID: <1458750989-28967-1-git-send-email-andrew.cooper3@citrix.com> (raw)
This series is available in git form at:
http://xenbits.xen.org/git-http/people/andrewcoop/xen.git levelling-v4
There are no major changes from v3. There were minor adjustmenst to the
feature dependency tree, OSXSAVE/OSPKE handling for PV guests and collection
of Acks/Reviews.
Most patches do now how Acks/Reviews. The remaining patches are #1 (Rest),
#6-8,11-13,18 (x86), #20 (ARM), 26 (Toolstack).
The current cpuid code, both in the hypervisor and toolstack, has grown
organically for a very long time, and is flawed in many ways. This series
focuses specifically on the fixing the bits pertaining to the visible
features, and I will be fixing other areas in future work (e.g. per-core,
per-package values, auditing of incoming migration values, etc.)
These changes alter the workflow of cpuid handling as follows:
Xen boots and evaluates its current capabilities. It uses this information to
calculate the maximum featuresets it can provide to guests, and provides this
information for toolstack consumption. A toolstack may then calculate a safe
set of features (taking into account migratability), and sets a guests cpuid
policy. Xen then takes care of context switching the levelling state.
In particular, this means that PV guests may have different levels while
running on the same host, an option which was not previously available.
Andrew Cooper (26):
xen/public: Export cpu featureset information in the public API
xen/x86: Script to automatically process featureset information
xen/x86: Collect more cpuid feature leaves
xen/x86: Mask out unknown features from Xen's capabilities
xen/x86: Annotate special features
xen/x86: Annotate VM applicability in featureset
xen/x86: Calculate maximum host and guest featuresets
xen/x86: Generate deep dependencies of features
xen/x86: Clear dependent features when clearing a cpu cap
xen/x86: Improve disabling of features which have dependencies
xen/x86: Improvements to in-hypervisor cpuid sanity checks
x86/cpu: Move set_cpumask() calls into c_early_init()
x86/cpu: Sysctl and common infrastructure for levelling context
switching
x86/cpu: Rework AMD masking MSR setup
x86/cpu: Rework Intel masking/faulting setup
x86/cpu: Context switch cpuid masks and faulting state in
context_switch()
x86/pv: Provide custom cpumasks for PV domains
x86/domctl: Update PV domain cpumasks when setting cpuid policy
xen+tools: Export maximum host and guest cpu featuresets via SYSCTL
tools/libxc: Modify bitmap operations to take void pointers
tools/libxc: Use public/featureset.h for cpuid policy generation
tools/libxc: Expose the automatically generated cpu featuremask
information
tools: Utility for dealing with featuresets
tools/libxc: Wire a featureset through to cpuid policy logic
tools/libxc: Use featuresets rather than guesswork
tools/libxc: Calculate xstate cpuid leaf from guest information
.gitignore | 2 +
tools/libxc/Makefile | 9 +
tools/libxc/include/xenctrl.h | 22 +-
tools/libxc/xc_bitops.h | 37 +-
tools/libxc/xc_cpufeature.h | 151 -------
tools/libxc/xc_cpuid_x86.c | 621 +++++++++++++++++-----------
tools/libxl/libxl_cpuid.c | 2 +-
tools/misc/Makefile | 4 +
tools/misc/xen-cpuid.c | 394 ++++++++++++++++++
tools/ocaml/libs/xc/xenctrl.ml | 3 +
tools/ocaml/libs/xc/xenctrl.mli | 4 +
tools/ocaml/libs/xc/xenctrl_stubs.c | 37 +-
tools/python/xen/lowlevel/xc/xc.c | 2 +-
xen/arch/x86/Makefile | 1 +
xen/arch/x86/apic.c | 2 +-
xen/arch/x86/cpu/amd.c | 308 ++++++++------
xen/arch/x86/cpu/common.c | 49 ++-
xen/arch/x86/cpu/intel.c | 263 +++++++-----
xen/arch/x86/cpuid.c | 240 +++++++++++
xen/arch/x86/crash.c | 3 +
xen/arch/x86/domain.c | 20 +-
xen/arch/x86/domctl.c | 138 +++++++
xen/arch/x86/hvm/hvm.c | 125 ++++--
xen/arch/x86/setup.c | 3 +
xen/arch/x86/sysctl.c | 57 +++
xen/arch/x86/traps.c | 209 ++++++----
xen/arch/x86/xstate.c | 6 +-
xen/include/Makefile | 10 +
xen/include/asm-x86/cpufeature.h | 153 +------
xen/include/asm-x86/cpufeatureset.h | 32 ++
xen/include/asm-x86/cpuid.h | 77 ++++
xen/include/asm-x86/domain.h | 2 +
xen/include/asm-x86/processor.h | 2 +-
xen/include/public/arch-x86/cpufeatureset.h | 245 +++++++++++
xen/include/public/sysctl.h | 50 +++
xen/tools/gen-cpuid.py | 405 ++++++++++++++++++
36 files changed, 2788 insertions(+), 900 deletions(-)
delete mode 100644 tools/libxc/xc_cpufeature.h
create mode 100644 tools/misc/xen-cpuid.c
create mode 100644 xen/arch/x86/cpuid.c
create mode 100644 xen/include/asm-x86/cpufeatureset.h
create mode 100644 xen/include/asm-x86/cpuid.h
create mode 100644 xen/include/public/arch-x86/cpufeatureset.h
create mode 100755 xen/tools/gen-cpuid.py
--
2.1.4
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next reply other threads:[~2016-03-23 16:36 UTC|newest]
Thread overview: 72+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-23 16:36 Andrew Cooper [this message]
2016-03-23 16:36 ` [PATCH v4 01/26] xen/public: Export cpu featureset information in the public API Andrew Cooper
2016-03-24 14:08 ` Jan Beulich
2016-03-24 14:12 ` Andrew Cooper
2016-03-24 14:16 ` Jan Beulich
2016-03-23 16:36 ` [PATCH v4 02/26] xen/x86: Script to automatically process featureset information Andrew Cooper
2016-03-23 16:36 ` [PATCH v4 03/26] xen/x86: Collect more cpuid feature leaves Andrew Cooper
2016-03-23 16:36 ` [PATCH v4 04/26] xen/x86: Mask out unknown features from Xen's capabilities Andrew Cooper
2016-03-23 16:36 ` [PATCH v4 05/26] xen/x86: Annotate special features Andrew Cooper
2016-03-23 16:36 ` [PATCH v4 06/26] xen/x86: Annotate VM applicability in featureset Andrew Cooper
2016-03-23 16:36 ` [PATCH v4 07/26] xen/x86: Calculate maximum host and guest featuresets Andrew Cooper
2016-03-29 8:57 ` Jan Beulich
2016-03-23 16:36 ` [PATCH v4 08/26] xen/x86: Generate deep dependencies of features Andrew Cooper
2016-03-24 16:16 ` Jan Beulich
2016-03-23 16:36 ` [PATCH v4 09/26] xen/x86: Clear dependent features when clearing a cpu cap Andrew Cooper
2016-03-23 16:36 ` [PATCH v4 10/26] xen/x86: Improve disabling of features which have dependencies Andrew Cooper
2016-03-28 15:18 ` Konrad Rzeszutek Wilk
2016-03-23 16:36 ` [PATCH v4 11/26] xen/x86: Improvements to in-hypervisor cpuid sanity checks Andrew Cooper
2016-03-24 15:38 ` Andrew Cooper
2016-03-24 16:47 ` Jan Beulich
2016-03-24 17:01 ` Andrew Cooper
2016-03-24 17:11 ` Jan Beulich
2016-03-24 17:12 ` Andrew Cooper
2016-03-28 15:29 ` Konrad Rzeszutek Wilk
2016-04-05 15:25 ` Andrew Cooper
2016-03-23 16:36 ` [PATCH v4 12/26] x86/cpu: Move set_cpumask() calls into c_early_init() Andrew Cooper
2016-03-28 15:55 ` Konrad Rzeszutek Wilk
2016-04-05 16:19 ` Andrew Cooper
2016-03-23 16:36 ` [PATCH v4 13/26] x86/cpu: Sysctl and common infrastructure for levelling context switching Andrew Cooper
2016-03-24 16:58 ` Jan Beulich
2016-03-28 16:12 ` Konrad Rzeszutek Wilk
2016-04-05 16:33 ` Andrew Cooper
2016-03-28 17:37 ` Konrad Rzeszutek Wilk
2016-03-23 16:36 ` [PATCH v4 14/26] x86/cpu: Rework AMD masking MSR setup Andrew Cooper
2016-03-28 18:55 ` Konrad Rzeszutek Wilk
2016-04-05 16:44 ` Andrew Cooper
2016-03-23 16:36 ` [PATCH v4 15/26] x86/cpu: Rework Intel masking/faulting setup Andrew Cooper
2016-03-28 19:14 ` Konrad Rzeszutek Wilk
2016-04-05 16:45 ` Andrew Cooper
2016-03-23 16:36 ` [PATCH v4 16/26] x86/cpu: Context switch cpuid masks and faulting state in context_switch() Andrew Cooper
2016-03-28 19:27 ` Konrad Rzeszutek Wilk
2016-04-05 18:34 ` Andrew Cooper
2016-03-23 16:36 ` [PATCH v4 17/26] x86/pv: Provide custom cpumasks for PV domains Andrew Cooper
2016-03-28 19:40 ` Konrad Rzeszutek Wilk
2016-04-05 16:55 ` Andrew Cooper
2016-03-23 16:36 ` [PATCH v4 18/26] x86/domctl: Update PV domain cpumasks when setting cpuid policy Andrew Cooper
2016-03-24 17:04 ` Jan Beulich
2016-03-24 17:05 ` Andrew Cooper
2016-03-28 19:51 ` Konrad Rzeszutek Wilk
2016-03-23 16:36 ` [PATCH v4 19/26] xen+tools: Export maximum host and guest cpu featuresets via SYSCTL Andrew Cooper
2016-03-28 19:59 ` Konrad Rzeszutek Wilk
2016-03-23 16:36 ` [PATCH v4 20/26] tools/libxc: Modify bitmap operations to take void pointers Andrew Cooper
2016-03-28 20:05 ` Konrad Rzeszutek Wilk
2016-03-23 16:36 ` [PATCH v4 21/26] tools/libxc: Use public/featureset.h for cpuid policy generation Andrew Cooper
2016-03-28 20:07 ` Konrad Rzeszutek Wilk
2016-03-23 16:36 ` [PATCH v4 22/26] tools/libxc: Expose the automatically generated cpu featuremask information Andrew Cooper
2016-03-28 20:08 ` Konrad Rzeszutek Wilk
2016-03-23 16:36 ` [PATCH v4 23/26] tools: Utility for dealing with featuresets Andrew Cooper
2016-03-28 20:26 ` Konrad Rzeszutek Wilk
2016-03-23 16:36 ` [PATCH v4 24/26] tools/libxc: Wire a featureset through to cpuid policy logic Andrew Cooper
2016-03-28 20:39 ` Konrad Rzeszutek Wilk
2016-03-23 16:36 ` [PATCH v4 25/26] tools/libxc: Use featuresets rather than guesswork Andrew Cooper
2016-03-23 16:36 ` [PATCH v4 26/26] tools/libxc: Calculate xstate cpuid leaf from guest information Andrew Cooper
2016-03-24 17:20 ` Wei Liu
2016-03-31 7:48 ` Jan Beulich
2016-04-05 17:48 ` Andrew Cooper
2016-04-07 0:16 ` Jan Beulich
2016-04-07 0:40 ` Andrew Cooper
2016-04-07 0:56 ` Jan Beulich
2016-04-07 11:34 ` Andrew Cooper
2016-03-24 10:27 ` [PATCH v4 00/26] x86: Improvements to cpuid handling for guests Jan Beulich
2016-03-24 10:28 ` Andrew Cooper
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