[PATCH v3 00/11] x86: xen cpuid() cleanup

From	Juergen Gross <jgross@suse.com>
Newsgroups	linux.kernel
Subject	[PATCH v3 00/11] x86: xen cpuid() cleanup
Date	2017-04-18 08:40 +0200
Message-ID	<txuXT-2Q2-3@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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Reduce special casing of xen_cpuid() by using cpu capabilities instead
of faked cpuid nodes.

This cleanup enables us remove the hypervisor specific set_cpu_features
callback as the same effect can be reached via
setup_[clear|force]_cpu_cap().

Removing the rest faked nodes from xen_cpuid() requires some more work
as the remaining cases (mwait leafs and extended topology info) have
to be handled at the consumer sides of this information.

Changes in V3:
- rewrite patch 9 (xsave) to use xgetbv instruction to test for osxsave
  availability (Andrew Cooper)

Changes in V2:
- added several features to this scheme
- removed hypervisor specific set_cpu_features() callbacks

Cc: Alok Kataria <akataria@vmware.com> 
Cc: Thomas Gleixner <tglx@linutronix.de> 
Cc: Ingo Molnar <mingo@redhat.com> 
Cc: "H. Peter Anvin" <hpa@zytor.com> 
Cc: x86@kernel.org 
Cc: virtualization@lists.linux-foundation.org

Juergen Gross (11):
  xen: set cpu capabilities from xen_start_kernel()
  x86/xen: don't indicate DCA support in pv domains
  x86/xen: use capabilities instead of fake cpuid values for aperf
  x86/xen: use capabilities instead of fake cpuid values for mtrr
  x86/xen: use capabilities instead of fake cpuid values for acc
  x86/xen: use capabilities instead of fake cpuid values for acpi
  x86/xen: use capabilities instead of fake cpuid values for mwait
  x86/xen: use capabilities instead of fake cpuid values for x2apic
  x86/xen: use capabilities instead of fake cpuid values for xsave
  vmware: set cpu capabilities during platform initialization
  x86/cpu: remove hypervisor specific set_cpu_features

 arch/x86/include/asm/hypervisor.h |  5 ---
 arch/x86/kernel/cpu/common.c      |  1 -
 arch/x86/kernel/cpu/hypervisor.c  |  8 ----
 arch/x86/kernel/cpu/vmware.c      | 39 ++++++++--------
 arch/x86/xen/enlighten_pv.c       | 95 +++++++++++++++++----------------------
 5 files changed, 61 insertions(+), 87 deletions(-)

-- 
2.12.0

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[PATCH v3 00/11] x86: xen cpuid() cleanup Juergen Gross <jgross@suse.com> - 2017-04-18 08:40 +0200
  [PATCH v3 06/11] x86/xen: use capabilities instead of fake cpuid values for acpi Juergen Gross <jgross@suse.com> - 2017-04-18 08:40 +0200
  [PATCH v3 03/11] x86/xen: use capabilities instead of fake cpuid values for aperf Juergen Gross <jgross@suse.com> - 2017-04-18 08:40 +0200
  [PATCH v3 11/11] x86/cpu: remove hypervisor specific set_cpu_features Juergen Gross <jgross@suse.com> - 2017-04-18 08:40 +0200
  [PATCH v3 01/11] xen: set cpu capabilities from xen_start_kernel() Juergen Gross <jgross@suse.com> - 2017-04-18 08:40 +0200

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