[Xen-devel] [PATCH v2 0/2] SSBD AMD via LS CFG Enablement

[Brian Woods <brian.woods@xxxxxxx>]

This series of patches is for enabling SSBD via the LS_CFG MSR for
family 15h-17h.  The first patch make it so that the information is
correctly displayed on boot.  The last patch is for further enablement
for Xen switching SSBD on or off internally, or for further control of
SSBD for guests via the VIRT_SPEC_CTRL.

Note: these should be applied after Jan's patch:
x86/AMD: distinguish compute units from hyper-threads

v1 -> v2:
    - changed some variable types
    - updated ssbd_amd_ls_cfg_set_nonsmt function
    - changed sbd_amd_ls_cfg_init to a presmp_initcall
    - deleted ssbd_amd_ls_cfg_set_init due to ^ and it happening later
      in the boot
    - various smaller cleanups

Brian Woods (2):
  x86/spec-ctrl: add AMD SSBD LS_CFG in init print
  x86/spec-ctrl: add support for modifying SSBD VIA LS_CFG MSR

 xen/arch/x86/cpu/amd.c            |  12 ++-
 xen/arch/x86/setup.c              |   2 +
 xen/arch/x86/smpboot.c            |   3 +
 xen/arch/x86/spec_ctrl.c          | 202 +++++++++++++++++++++++++++++++++++++-
 xen/include/asm-x86/cpufeatures.h |   1 +
 xen/include/asm-x86/spec_ctrl.h   |   5 +
 6 files changed, 218 insertions(+), 7 deletions(-)

-- 
2.11.0


Brian Woods (2):
  x86/spec-ctrl: add AMD SSBD LS_CFG in init print
  x86/spec-ctrl: add support for modifying SSBD VIA LS_CFG MSR

 xen/arch/x86/cpu/amd.c            |  12 +--
 xen/arch/x86/smpboot.c            |   3 +
 xen/arch/x86/spec_ctrl.c          | 179 +++++++++++++++++++++++++++++++++++++-
 xen/include/asm-x86/cpufeatures.h |   1 +
 xen/include/asm-x86/spec_ctrl.h   |   4 +
 5 files changed, 192 insertions(+), 7 deletions(-)

-- 
2.11.0


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