[PATCH 0/5] TSA 5.10 backport

[Borislav Petkov <bp@kernel.org>]

From: "Borislav Petkov (AMD)" <bp@alien8.de>

Hi,

this is a 5.10 backport of the AMD TSA mitigation.

It has been tested with the corresponding *upstream* qemu patches here:

https://lore.kernel.org/r/12881b2c03fa351316057ddc5f39c011074b4549.1752176771.git.babu.moger@amd.com

Thx.

Borislav Petkov (AMD) (4):
  x86/bugs: Rename MDS machinery to something more generic
  x86/bugs: Add a Transient Scheduler Attacks mitigation
  KVM: SVM: Advertise TSA CPUID bits to guests
  x86/process: Move the buffer clearing before MONITOR

Paolo Bonzini (1):
  KVM: x86: add support for CPUID leaf 0x80000021

 .../ABI/testing/sysfs-devices-system-cpu      |   1 +
 .../hw-vuln/processor_mmio_stale_data.rst     |   4 +-
 .../admin-guide/kernel-parameters.txt         |  13 ++
 arch/x86/Kconfig                              |   9 ++
 arch/x86/entry/entry.S                        |   8 +-
 arch/x86/include/asm/cpu.h                    |  13 ++
 arch/x86/include/asm/cpufeature.h             |   5 +-
 arch/x86/include/asm/cpufeatures.h            |   8 +-
 arch/x86/include/asm/disabled-features.h      |   2 +-
 arch/x86/include/asm/irqflags.h               |   4 +-
 arch/x86/include/asm/mwait.h                  |  19 ++-
 arch/x86/include/asm/nospec-branch.h          |  39 ++---
 arch/x86/include/asm/required-features.h      |   2 +-
 arch/x86/kernel/cpu/amd.c                     |  58 ++++++++
 arch/x86/kernel/cpu/bugs.c                    | 133 +++++++++++++++++-
 arch/x86/kernel/cpu/common.c                  |  14 +-
 arch/x86/kernel/process.c                     |  15 +-
 arch/x86/kvm/cpuid.c                          |  31 +++-
 arch/x86/kvm/cpuid.h                          |   1 +
 arch/x86/kvm/svm/vmenter.S                    |   3 +
 arch/x86/kvm/vmx/vmx.c                        |   2 +-
 drivers/base/cpu.c                            |   2 +
 include/linux/cpu.h                           |   1 +
 23 files changed, 339 insertions(+), 48 deletions(-)

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2.43.0