[0/8] x86: Drop the vm86 segments selectors from struct cpu_user_regs

Message

Andrew Cooper March 11, 2025, 9:10 p.m. UTC

This is the next chunk of work in order to support FRED.

https://gitlab.com/xen-project/people/andyhhp/xen/-/pipelines/1711534693
https://cirrus-ci.com/build/6031265616363520

Andrew Cooper (8):
  x86/regs: Fold x86_64/regs.h into it's single includer
  x86/traps: Rework register state printing to use a struct
  x86/traps: Avoid OoB accesses to print the data selectors
  Revert "x86/traps: 'Fix' safety of read_registers() in #DF path"
  x86/domctl: Stop using XLAT_cpu_user_regs()
  x86/pv: Store the data segment selectors outside of cpu_user_regs
  x86/public: Split the struct cpu_user_regs type
  x86: Drop the vm86 segments selectors from struct cpu_user_regs

 xen/arch/x86/cpu/common.c                |  10 +-
 xen/arch/x86/domain.c                    |  96 ++++++++++++------
 xen/arch/x86/domctl.c                    |  42 +++++++-
 xen/arch/x86/include/asm/cpu-user-regs.h |  65 +++++++++++++
 xen/arch/x86/include/asm/current.h       |  11 ++-
 xen/arch/x86/include/asm/domain.h        |   2 +
 xen/arch/x86/include/asm/hvm/hvm.h       |   4 -
 xen/arch/x86/include/asm/regs.h          |  28 ++++--
 xen/arch/x86/include/asm/x86_64/regs.h   |  28 ------
 xen/arch/x86/pv/dom0_build.c             |   6 +-
 xen/arch/x86/traps.c                     |   2 +-
 xen/arch/x86/x86_64/asm-offsets.c        |   2 +-
 xen/arch/x86/x86_64/traps.c              | 119 +++++++++++++----------
 xen/arch/x86/x86_emulate/private.h       |   2 +
 xen/include/public/arch-x86/xen-x86_32.h |   8 ++
 xen/include/public/arch-x86/xen-x86_64.h |   8 ++
 xen/include/public/arch-x86/xen.h        |   6 ++
 xen/include/xlat.lst                     |   2 -
 18 files changed, 301 insertions(+), 140 deletions(-)
 create mode 100644 xen/arch/x86/include/asm/cpu-user-regs.h
 delete mode 100644 xen/arch/x86/include/asm/x86_64/regs.h