[PATCH v4 00/30] KVM: x86: x86.{c,h} spring cleaning

[Sean Christopherson <seanjc@google.com>]

It's still technically spring!

Perform spring cleaning on x86.{c,h} and asm/kvm_host.h, by adding regs.c
(the kvm_cache_regs.h => regs.h is already applied) and msrs.{c,h}, and moving
relevant code out of x86.c.

v4:
 - Drop the GPR API cleanups (already applied).
 - Collect more tags. [Yosry, Kai
 - Chunked the x86.c => regs.c code movement into several patches, so that the
   bulk move is as close to a pure move as is reasonably possible. [Yosry]
 - Drop a redundant BUILD_BUG_ON() from store_regs().
 - Fix various changelog goofs. [Kai]
 - Fix alignment goofs in kvm_get_{,feature_}msr_index_list(). [Kai]
 - Drop the defunct x86.h include from mtrr.c. [Kai]
 - Fix whitespace goofs. [Kai]
 - Rewrite the changelog for the bulk regs.c move to better explain why only a
   tiny amount of EFER code is moved. [Yosry]
 - Move "struct kvm_x86_msr_filter" and "struct kvm_x86_pmu_event_filter" to
   msrs.c and pmu.c respectively. [Kai]
 - Rename LDT helpers to vmx_{load,store}_ldt(), and call out that they will
   hopefully be replaced by kernel helpers in the near future. [Kai]
 - Drop the kvm_cpu_get_apicid() code movement (sent a separate patch to kill
   it off entirely). [Kai]
 - Add more detail to explain why using VALID_MASK defines outside of x86.c is
   dangerous. [Yosry, Kai]
 - Bury kvm_arch_interrupt_allowed() in x86.c as kvm_is_interrupt_allowed(). [Kai]
 - Move kvm_find_async_pf_gfn() prototype to x86.h. [Sashiko]

v3:
 - Collect more tags. [David, Binbin, Yosry]
 - Use kvm_run_sync_regs_{from,to}_user() instead of kvm_run_{g,s}et_regs().
   [Kai]
 - Fix a variety of typos. [Binbin]
 - Everything beyond patch 15...

v2:
 - https://lore.kernel.org/all/20260514215355.1648463-2-seanjc@google.com
 - Collect tags. [Yosry, Kai]
 - Fix some truly egregious goofs. [Binbin]
 - Rename kvm_cache_regs.h => regs.h, add regs.c. [Yosry, because he
   complained, not because he actually suggested this :-D ]
 - Drop superfluous casting/masking of e*x() usage. [Kai]

v1: https://lore.kernel.org/all/20260409235622.2052730-1-seanjc@google.com

Sean Christopherson (30):
  KVM: x86: Extract REGS and SREGS runtime sync code to helpers
  KVM: x86: Move get_segment_base() to regs.h, as kvm_get_segment_base()
  KVM: x86: Rename __{g,s}et_sregs2() =>
    kvm_x86_vcpu_ioctl_{g,s}et_sregs2()
  KVM: x86: Move the bulk of register specific code from x86.c to regs.c
  KVM: x86: Move local APIC specific helpers out of asm/kvm_host.h
  KVM: x86: Move kvm_caps and kvm_host_values to asm/kvm_host.h
  KVM: x86: Swap the include order between x86.h and mmu.h
  KVM: x86: Move tdp_enabled from kvm_host.h to mmu.h
  KVM: x86: Move eager_page_split to mmu.{c,h}
  KVM: x86/hyperv: Eliminate an unnecessary include of x86.h in hyperv.h
  KVM: x86: Move kvm_{load,put}_guest_fpu() to fpu.h
  KVM: x86: Extract get/set MSR (list) ioctl logic to helpers
  KVM: x86: Expose several TSC helpers via x86.h for use by MSR code
  KVM: x86: Move the bulk of MSR specific code from x86.c to msrs.{c,h}
  KVM: x86: Move register helper declarations from kvm_host.h => regs.h
  KVM: x86: Move kvm_{g,s}et_segment() to inline helpers in regs.h
  KVM: x86: Move MSR helper declarations from kvm_host.h => msrs.h
  KVM: x86: Move "struct kvm_x86_msr_filter" definition to msrs.c
  KVM: x86/pmu: Move "struct kvm_x86_pmu_event_filter" definition to
    pmu.c
  KVM: x86: Move MMU helper declarations from kvm_host.h => mmu.h
  KVM: x86: Move LLDT assembly wrappers into VMX
  KVM: x86: Move misc "VALID MASK" defines from kvm_host.h => x86.c
  KVM: x86: Move __kvm_irq_line_state() from kvm_host.h => ioapic.h
  KVM: x86: Move IRQ-related helper declarations from kvm_host.h =>
    irq.h
  KVM: x86: Move kvm_pv_send_ipi() declaration from kvm_host.h =>
    lapic.h
  KVM: x86: Don't treat interrupts as allowed just because a nested run
    is pending
  KVM: x86: Rework kvm_arch_interrupt_allowed() into
    kvm_is_interrupt_allowed()
  KVM: x86/mmu: Move kvm_arch_async_page_ready() below
    kvm_tdp_page_fault()
  KVM: x86/mmu: Move kvm_mmu_do_page_fault() from mmu_internal.h =>
    mmu.c
  KVM: x86: Move a pile of stuff from kvm_host.h => x86.h

 arch/x86/include/asm/kvm_host.h |  470 +---
 arch/x86/kvm/Makefile           |    4 +-
 arch/x86/kvm/cpuid.c            |    1 +
 arch/x86/kvm/fpu.h              |   26 +
 arch/x86/kvm/hyperv.h           |    3 +-
 arch/x86/kvm/ioapic.c           |    1 +
 arch/x86/kvm/ioapic.h           |   12 +
 arch/x86/kvm/irq.c              |    7 +
 arch/x86/kvm/irq.h              |    6 +
 arch/x86/kvm/lapic.h            |    8 +
 arch/x86/kvm/mmu.h              |   90 +-
 arch/x86/kvm/mmu/mmu.c          |  132 +-
 arch/x86/kvm/mmu/mmu_internal.h |   66 -
 arch/x86/kvm/msrs.c             | 2745 +++++++++++++++++++++++
 arch/x86/kvm/msrs.h             |  156 ++
 arch/x86/kvm/mtrr.c             |    2 +-
 arch/x86/kvm/pmu.c              |   12 +
 arch/x86/kvm/regs.c             |  875 ++++++++
 arch/x86/kvm/regs.h             |   60 +
 arch/x86/kvm/svm/nested.c       |    1 +
 arch/x86/kvm/svm/svm.c          |    6 +-
 arch/x86/kvm/vmx/nested.c       |    1 +
 arch/x86/kvm/vmx/vmx.c          |   23 +-
 arch/x86/kvm/x86.c              | 3709 +------------------------------
 arch/x86/kvm/x86.h              |  354 +--
 25 files changed, 4457 insertions(+), 4313 deletions(-)
 create mode 100644 arch/x86/kvm/msrs.c
 create mode 100644 arch/x86/kvm/msrs.h
 create mode 100644 arch/x86/kvm/regs.c


base-commit: c1f7303302927f9cbf4efedf70f0512cde168c65
-- 
2.54.0.1136.gdb2ca164c4-goog