[PATCH 0/7] KVM: x86: APX reg prep work

[Sean Christopherson <seanjc@google.com>]

Clean up KVM's register tracking and storage in preparation for landing APX,
which expands the maximum number of GPRs from 16 to 32.

This is kinda sorta an RFC, as there are some very opinionated changes.  I.e.
if you dislike something, please speak up.

My thought is to treat R16-R31 as much like other GPRs as possible (though
maybe we don't need to expand regs[] as sketched out in the last patch?).

Sean Christopherson (7):
  KVM: x86: Add dedicated storage for guest RIP
  KVM: x86: Drop the "EX" part of "EXREG" to avoid collision with APX
  KVM: nVMX: Do a bitwise-AND of regs_avail when switching active VMCS
  KVM: x86: Add wrapper APIs to reset dirty/available register masks
  KVM: x86: Track available/dirty register masks as "unsigned long"
    values
  KVM: x86: Use a proper bitmap for tracking available/dirty registers
  *** DO NOT MERGE *** KVM: x86: Pretend that APX is supported on 64-bit
    kernels

 arch/x86/include/asm/kvm_host.h | 53 +++++++++++++++++++--------
 arch/x86/kvm/kvm_cache_regs.h   | 64 +++++++++++++++++++++++----------
 arch/x86/kvm/svm/sev.c          |  2 +-
 arch/x86/kvm/svm/svm.c          | 16 ++++-----
 arch/x86/kvm/svm/svm.h          |  2 +-
 arch/x86/kvm/vmx/nested.c       | 10 +++---
 arch/x86/kvm/vmx/tdx.c          | 36 +++++++++----------
 arch/x86/kvm/vmx/vmx.c          | 52 +++++++++++++--------------
 arch/x86/kvm/vmx/vmx.h          | 24 ++++++-------
 arch/x86/kvm/x86.c              | 20 +++++------
 10 files changed, 166 insertions(+), 113 deletions(-)


base-commit: 5128b972fb2801ad9aca54d990a75611ab5283a9
-- 
2.53.0.473.g4a7958ca14-goog