linux.git/arch/x86/kernel/cpu/amd.c, branch v6.11

x86/CPU/AMD: Add models 0x60-0x6f to the Zen5 range

2024-07-30T13:22:52+00:00

Add some new Zen5 models for the 0x1A family.

  [ bp: Merge the 0x60 and 0x70 ranges. ]

Signed-off-by: Perry Yuan 
Signed-off-by: Borislav Petkov (AMD) 
Link: https://lore.kernel.org/r/20240729064626.24297-1-bp@kernel.org

x86/CPU/AMD: Always inline amd_clear_divider()

2024-06-13T12:40:29+00:00

The routine is used on syscall exit and on non-AMD CPUs is guaranteed to
be empty.

It probably does not need to be a function call even on CPUs which do need the
mitigation.

  [ bp: Make sure it is always inlined so that noinstr marking works. ]

Signed-off-by: Mateusz Guzik 
Signed-off-by: Borislav Petkov (AMD) 
Link: https://lore.kernel.org/r/20240613082637.659133-1-mjguzik@gmail.com

Merge tag 'x86-cpu-2024-05-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2024-05-14T01:44:44+00:00

Pull x86 cpu updates from Ingo Molnar:

 - Rework the x86 CPU vendor/family/model code: introduce the 'VFM'
   value that is an 8+8+8 bit concatenation of the vendor/family/model
   value, and add macros that work on VFM values. This simplifies the
   addition of new Intel models & families, and simplifies existing
   enumeration & quirk code.

 - Add support for the AMD 0x80000026 leaf, to better parse topology
   information

 - Optimize the NUMA allocation layout of more per-CPU data structures

 - Improve the workaround for AMD erratum 1386

 - Clear TME from /proc/cpuinfo as well, when disabled by the firmware

 - Improve x86 self-tests

 - Extend the mce_record tracepoint with the ::ppin and ::microcode fields

 - Implement recovery for MCE errors in TDX/SEAM non-root mode

 - Misc cleanups and fixes

* tag 'x86-cpu-2024-05-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (34 commits)
  x86/mm: Switch to new Intel CPU model defines
  x86/tsc_msr: Switch to new Intel CPU model defines
  x86/tsc: Switch to new Intel CPU model defines
  x86/cpu: Switch to new Intel CPU model defines
  x86/resctrl: Switch to new Intel CPU model defines
  x86/microcode/intel: Switch to new Intel CPU model defines
  x86/mce: Switch to new Intel CPU model defines
  x86/cpu: Switch to new Intel CPU model defines
  x86/cpu/intel_epb: Switch to new Intel CPU model defines
  x86/aperfmperf: Switch to new Intel CPU model defines
  x86/apic: Switch to new Intel CPU model defines
  perf/x86/msr: Switch to new Intel CPU model defines
  perf/x86/intel/uncore: Switch to new Intel CPU model defines
  perf/x86/intel/pt: Switch to new Intel CPU model defines
  perf/x86/lbr: Switch to new Intel CPU model defines
  perf/x86/intel/cstate: Switch to new Intel CPU model defines
  x86/bugs: Switch to new Intel CPU model defines
  x86/bugs: Switch to new Intel CPU model defines
  x86/cpu/vfm: Update arch/x86/include/asm/intel-family.h
  x86/cpu/vfm: Add new macros to work with (vendor/family/model) values
  ...

x86/CPU/AMD: Add models 0x10-0x1f to the Zen5 range

2024-04-24T12:05:25+00:00

Add some more Zen5 models.

Fixes: 3e4147f33f8b ("x86/CPU/AMD: Add X86_FEATURE_ZEN5")
Signed-off-by: Wenkuan Wang 
Signed-off-by: Borislav Petkov (AMD) 
Link: https://lore.kernel.org/r/20240423144111.1362-1-bp@kernel.org

Merge branch 'x86/urgent' into x86/cpu, to resolve conflict

2024-04-12T10:11:45+00:00

There's a new conflict between this commit pending in x86/cpu:

  63edbaa48a57 x86/cpu/topology: Add support for the AMD 0x80000026 leaf

And these fixes in x86/urgent:

  c064b536a8f9 x86/cpu/amd: Make the NODEID_MSR union actually work
  1b3108f6898e x86/cpu/amd: Make the CPUID 0x80000008 parser correct

Resolve them.

 Conflicts:
	arch/x86/kernel/cpu/topology_amd.c

Signed-off-by: Ingo Molnar

x86/cpu/amd: Move TOPOEXT enablement into the topology parser

2024-04-12T10:05:54+00:00

The topology rework missed that early_init_amd() tries to re-enable the
Topology Extensions when the BIOS disabled them.

The new parser is invoked before early_init_amd() so the re-enable attempt
happens too late.

Move it into the AMD specific topology parser code where it belongs.

Fixes: f7fb3b2dd92c ("x86/cpu: Provide an AMD/HYGON specific topology parser")
Signed-off-by: Thomas Gleixner 
Signed-off-by: Ingo Molnar 
Link: https://lore.kernel.org/r/878r1j260l.ffs@tglx

Merge tag 'v6.9-rc3' into x86/cpu, to pick up fixes

2024-04-09T07:28:41+00:00

Signed-off-by: Ingo Molnar

x86/CPU/AMD: Track SNP host status with cc_platform_*()

2024-04-04T08:40:30+00:00

The host SNP worthiness can determined later, after alternatives have
been patched, in snp_rmptable_init() depending on cmdline options like
iommu=pt which is incompatible with SNP, for example.

Which means that one cannot use X86_FEATURE_SEV_SNP and will need to
have a special flag for that control.

Use that newly added CC_ATTR_HOST_SEV_SNP in the appropriate places.

Move kdump_sev_callback() to its rightful place, while at it.

Fixes: 216d106c7ff7 ("x86/sev: Add SEV-SNP host initialization support")
Signed-off-by: Borislav Petkov (AMD) 
Reviewed-by: Tom Lendacky 
Tested-by: Srikanth Aithal 
Link: https://lore.kernel.org/r/20240327154317.29909-6-bp@alien8.de

x86/CPU/AMD: Improve the erratum 1386 workaround

2024-03-25T13:05:24+00:00

Disable XSAVES only on machines which haven't loaded the microcode
revision containing the erratum fix.

This will come in handy when running archaic OSes as guests. OSes whose
brilliant programmers thought that CPUID is overrated and one should not
query it but use features directly, ala shoot first, ask questions
later... but only if you're alive after the shooting.

Signed-off-by: Borislav Petkov (AMD) 
Tested-by: "Maciej S. Szmigiero" 
Cc: Boris Ostrovsky 
Link: https://lore.kernel.org/r/20240324200525.GBZgCHhYFsBj12PrKv@fat_crate.local

x86/CPU/AMD: Update the Zenbleed microcode revisions

2024-03-16T16:04:09+00:00

Update them to the correct revision numbers.

Fixes: 522b1d69219d ("x86/cpu/amd: Add a Zenbleed fix")
Signed-off-by: Borislav Petkov (AMD) 
Cc: 
Signed-off-by: Linus Torvalds