[Xen-devel] [PATCH v2 0/5] x86: Drop PVRDTSCP and fix MSR_TSC_AUX handling for guests

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

Boris has confirmed that noone appears to be using PVRDTSCP any more, and in
the decade since it was introduced, guest kernel / hardware support has
provided a better alternative.

For changes, see individual patches.

Andrew Cooper (5):
  x86/time: Alter tsc_set_info() to return an error value
  x86: Begin to remove TSC mode PVRDTSCP
  x86/pv: Remove deferred RDTSC{,P} handling in pv_emulate_privileged_op()
  x86/msr: Handle MSR_TSC_AUX consistently for PV and HVM guests
  x86/pv: Expose RDTSCP to PV guests

 xen/arch/x86/domain.c                       |  9 +++--
 xen/arch/x86/domctl.c                       | 10 +++---
 xen/arch/x86/hvm/hvm.c                      | 22 +++++-------
 xen/arch/x86/hvm/svm/svm.c                  |  6 ++--
 xen/arch/x86/hvm/vmx/vmx.c                  |  6 ++--
 xen/arch/x86/msr.c                          | 18 ++++++++++
 xen/arch/x86/pv/emul-inv-op.c               | 27 +--------------
 xen/arch/x86/pv/emul-priv-op.c              | 32 +----------------
 xen/arch/x86/time.c                         | 53 +++++++----------------------
 xen/include/asm-x86/cpufeature.h            |  5 +++
 xen/include/asm-x86/hvm/hvm.h               |  6 ----
 xen/include/asm-x86/hvm/vcpu.h              |  1 -
 xen/include/asm-x86/msr.h                   |  9 +++++
 xen/include/asm-x86/time.h                  | 13 +++----
 xen/include/public/arch-x86/cpufeatureset.h |  2 +-
 15 files changed, 77 insertions(+), 142 deletions(-)

-- 
2.1.4


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