[PATCH 4.19 00/34] 4.19.266-rc1 review

[Greg Kroah-Hartman]

This is the start of the stable review cycle for the 4.19.266 release.
There are 34 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 Wed, 23 Nov 2022 12:41:40 +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/v4.x/stable-review/patch-4.19.266-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-4.19.y
and the diffstat can be found below.

thanks,

greg k-h

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

Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
    Linux 4.19.266-rc1

Daniel Sneddon <daniel.sneddon@xxxxxxxxxxxxxxx>
    x86/speculation: Add RSB VM Exit protections

Pawan Gupta <pawan.kumar.gupta@xxxxxxxxxxxxxxx>
    x86/bugs: Warn when "ibrs" mitigation is selected on Enhanced IBRS parts

Nathan Chancellor <nathan@xxxxxxxxxx>
    x86/speculation: Use DECLARE_PER_CPU for x86_spec_ctrl_current

Pawan Gupta <pawan.kumar.gupta@xxxxxxxxxxxxxxx>
    x86/speculation: Disable RRSBA behavior

Pawan Gupta <pawan.kumar.gupta@xxxxxxxxxxxxxxx>
    x86/bugs: Add Cannon lake to RETBleed affected CPU list

Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    x86/cpu/amd: Enumerate BTC_NO

Peter Zijlstra <peterz@xxxxxxxxxxxxx>
    x86/common: Stamp out the stepping madness

Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
    x86/speculation: Fill RSB on vmexit for IBRS

Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
    KVM: VMX: Fix IBRS handling after vmexit

Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
    KVM: VMX: Prevent guest RSB poisoning attacks with eIBRS

Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
    x86/speculation: Remove x86_spec_ctrl_mask

Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
    x86/speculation: Use cached host SPEC_CTRL value for guest entry/exit

Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
    x86/speculation: Fix SPEC_CTRL write on SMT state change

Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
    x86/speculation: Fix firmware entry SPEC_CTRL handling

Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
    x86/speculation: Fix RSB filling with CONFIG_RETPOLINE=n

Peter Zijlstra <peterz@xxxxxxxxxxxxx>
    x86/speculation: Change FILL_RETURN_BUFFER to work with objtool

Peter Zijlstra <peterz@xxxxxxxxxxxxx>
    intel_idle: Disable IBRS during long idle

Peter Zijlstra <peterz@xxxxxxxxxxxxx>
    x86/bugs: Report Intel retbleed vulnerability

Peter Zijlstra <peterz@xxxxxxxxxxxxx>
    x86/bugs: Split spectre_v2_select_mitigation() and spectre_v2_user_select_mitigation()

Pawan Gupta <pawan.kumar.gupta@xxxxxxxxxxxxxxx>
    x86/speculation: Add spectre_v2=ibrs option to support Kernel IBRS

Peter Zijlstra <peterz@xxxxxxxxxxxxx>
    x86/bugs: Optimize SPEC_CTRL MSR writes

Peter Zijlstra <peterz@xxxxxxxxxxxxx>
    x86/entry: Add kernel IBRS implementation

Peter Zijlstra <peterz@xxxxxxxxxxxxx>
    x86/entry: Remove skip_r11rcx

Peter Zijlstra <peterz@xxxxxxxxxxxxx>
    x86/bugs: Keep a per-CPU IA32_SPEC_CTRL value

Alexandre Chartre <alexandre.chartre@xxxxxxxxxx>
    x86/bugs: Add AMD retbleed= boot parameter

Alexandre Chartre <alexandre.chartre@xxxxxxxxxx>
    x86/bugs: Report AMD retbleed vulnerability

Peter Zijlstra <peterz@xxxxxxxxxxxxx>
    x86/cpufeatures: Move RETPOLINE flags to word 11

Mark Gross <mgross@xxxxxxxxxxxxxxx>
    x86/cpu: Add a steppings field to struct x86_cpu_id

Thomas Gleixner <tglx@xxxxxxxxxxxxx>
    x86/cpu: Add consistent CPU match macros

Thomas Gleixner <tglx@xxxxxxxxxxxxx>
    x86/devicetable: Move x86 specific macro out of generic code

Ingo Molnar <mingo@xxxxxxxxxx>
    x86/cpufeature: Fix various quality problems in the <asm/cpu_device_hd.h> header

Kan Liang <kan.liang@xxxxxxxxxxxxxxx>
    x86/cpufeature: Add facility to check for min microcode revisions

Suleiman Souhlal <suleiman@xxxxxxxxxx>
    Revert "x86/cpu: Add a steppings field to struct x86_cpu_id"

Suleiman Souhlal <suleiman@xxxxxxxxxx>
    Revert "x86/speculation: Add RSB VM Exit protections"


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

Diffstat:

 Documentation/admin-guide/kernel-parameters.txt |  13 +
 Makefile                                        |   4 +-
 arch/x86/entry/calling.h                        |  68 ++++-
 arch/x86/entry/entry_32.S                       |   2 -
 arch/x86/entry/entry_64.S                       |  34 ++-
 arch/x86/entry/entry_64_compat.S                |  11 +-
 arch/x86/include/asm/cpu_device_id.h            | 168 ++++++++++-
 arch/x86/include/asm/cpufeatures.h              |  18 +-
 arch/x86/include/asm/intel-family.h             |   6 +
 arch/x86/include/asm/msr-index.h                |  10 +
 arch/x86/include/asm/nospec-branch.h            |  53 ++--
 arch/x86/kernel/cpu/amd.c                       |  21 +-
 arch/x86/kernel/cpu/bugs.c                      | 368 +++++++++++++++++++-----
 arch/x86/kernel/cpu/common.c                    |  60 ++--
 arch/x86/kernel/cpu/match.c                     |  44 ++-
 arch/x86/kernel/cpu/scattered.c                 |   1 +
 arch/x86/kernel/process.c                       |   2 +-
 arch/x86/kvm/svm.c                              |   1 +
 arch/x86/kvm/vmx.c                              |  53 +++-
 arch/x86/kvm/x86.c                              |   4 +-
 drivers/base/cpu.c                              |   8 +
 drivers/cpufreq/acpi-cpufreq.c                  |   1 +
 drivers/cpufreq/amd_freq_sensitivity.c          |   1 +
 drivers/idle/intel_idle.c                       |  43 ++-
 include/linux/cpu.h                             |   2 +
 include/linux/kvm_host.h                        |   2 +-
 include/linux/mod_devicetable.h                 |   4 +-
 tools/arch/x86/include/asm/cpufeatures.h        |   1 +
 28 files changed, 815 insertions(+), 188 deletions(-)