5.4.199-rc1 review

This is the start of the stable review cycle for the 5.4.199 release. There are 15 patches in this series, all will be posted as a response to this one. If anyone has any issues with these being applied, please let me know.

Responses should be made by Thu, 16 Jun 2022 18:37:02 +0000. Anything received after that time might be too late.

The whole patch series can be found in one patch at:

	https://www.kernel.org/pub/linux/kernel/v5.x/stable-review/patch-5.4.199-rc1.gz

or in the git tree and branch at:
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.4.y
and the diffstat can be found below.

thanks,

greg k-h

-------------
Pseudo-Shortlog of commits:

Greg Kroah-Hartman <[email protected]>

    Linux 5.4.199-rc1

Josh Poimboeuf <[email protected]>
x86/speculation/mmio: Print SMT warning

Pawan Gupta <[email protected]>
KVM: x86/speculation: Disable Fill buffer clear within guests

Pawan Gupta <[email protected]>
x86/speculation/mmio: Reuse SRBDS mitigation for SBDS

Pawan Gupta <[email protected]>
x86/speculation/srbds: Update SRBDS mitigation selection

Pawan Gupta <[email protected]>
x86/speculation/mmio: Add sysfs reporting for Processor MMIO Stale Data

Pawan Gupta <[email protected]>
x86/speculation/mmio: Enable CPU Fill buffer clearing on idle

Pawan Gupta <[email protected]>
x86/bugs: Group MDS, TAA & Processor MMIO Stale Data mitigations

Pawan Gupta <[email protected]>
x86/speculation/mmio: Add mitigation for Processor MMIO Stale Data

Pawan Gupta <[email protected]>
x86/speculation: Add a common function for MD_CLEAR mitigation update

Pawan Gupta <[email protected]>
x86/speculation/mmio: Enumerate Processor MMIO Stale Data bug

Pawan Gupta <[email protected]>
Documentation: Add documentation for Processor MMIO Stale Data

Gayatri Kammela <[email protected]>
x86/cpu: Add another Alder Lake CPU to the Intel family

Tony Luck <[email protected]>
x86/cpu: Add Lakefield, Alder Lake and Rocket Lake models to the to Intel CPU family

Zhang Rui <[email protected]>
x86/cpu: Add Jasper Lake to Intel family

Guenter Roeck <[email protected]>
cpu/speculation: Add prototype for cpu_show_srbds()

-------------

Diffstat:

 Documentation/ABI/testing/sysfs-devices-system-cpu |   1 +
 Documentation/admin-guide/hw-vuln/index.rst        |   1 +
 .../hw-vuln/processor_mmio_stale_data.rst          | 246 +++++++++++++++++++++
 Documentation/admin-guide/kernel-parameters.txt    |  36 +++
 Makefile                                           |   4 +-
 arch/x86/include/asm/cpufeatures.h                 |   1 +
 arch/x86/include/asm/intel-family.h                |   9 +
 arch/x86/include/asm/msr-index.h                   |  25 +++
 arch/x86/include/asm/nospec-branch.h               |   2 +
 arch/x86/kernel/cpu/bugs.c                         | 235 +++++++++++++++++---
 arch/x86/kernel/cpu/common.c                       |  52 ++++-
 arch/x86/kvm/vmx/vmx.c                             |  75 ++++++-
 arch/x86/kvm/vmx/vmx.h                             |   3 +
 arch/x86/kvm/x86.c                                 |   4 +
 drivers/base/cpu.c                                 |   8 +
 include/linux/cpu.h                                |   4 +
 16 files changed, 664 insertions(+), 42 deletions(-)