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-rc... 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@linuxfoundation.org Linux 4.19.266-rc1

Daniel Sneddon daniel.sneddon@linux.intel.com x86/speculation: Add RSB VM Exit protections

Pawan Gupta pawan.kumar.gupta@linux.intel.com x86/bugs: Warn when "ibrs" mitigation is selected on Enhanced IBRS parts

Nathan Chancellor nathan@kernel.org x86/speculation: Use DECLARE_PER_CPU for x86_spec_ctrl_current

Pawan Gupta pawan.kumar.gupta@linux.intel.com x86/speculation: Disable RRSBA behavior

Pawan Gupta pawan.kumar.gupta@linux.intel.com x86/bugs: Add Cannon lake to RETBleed affected CPU list

Andrew Cooper andrew.cooper3@citrix.com x86/cpu/amd: Enumerate BTC_NO

Peter Zijlstra peterz@infradead.org x86/common: Stamp out the stepping madness

Josh Poimboeuf jpoimboe@kernel.org x86/speculation: Fill RSB on vmexit for IBRS

Josh Poimboeuf jpoimboe@kernel.org KVM: VMX: Fix IBRS handling after vmexit

Josh Poimboeuf jpoimboe@kernel.org KVM: VMX: Prevent guest RSB poisoning attacks with eIBRS

Josh Poimboeuf jpoimboe@kernel.org x86/speculation: Remove x86_spec_ctrl_mask

Josh Poimboeuf jpoimboe@kernel.org x86/speculation: Use cached host SPEC_CTRL value for guest entry/exit

Josh Poimboeuf jpoimboe@kernel.org x86/speculation: Fix SPEC_CTRL write on SMT state change

Josh Poimboeuf jpoimboe@kernel.org x86/speculation: Fix firmware entry SPEC_CTRL handling

Josh Poimboeuf jpoimboe@kernel.org x86/speculation: Fix RSB filling with CONFIG_RETPOLINE=n

Peter Zijlstra peterz@infradead.org x86/speculation: Change FILL_RETURN_BUFFER to work with objtool

Peter Zijlstra peterz@infradead.org intel_idle: Disable IBRS during long idle

Peter Zijlstra peterz@infradead.org x86/bugs: Report Intel retbleed vulnerability

Peter Zijlstra peterz@infradead.org x86/bugs: Split spectre_v2_select_mitigation() and spectre_v2_user_select_mitigation()

Pawan Gupta pawan.kumar.gupta@linux.intel.com x86/speculation: Add spectre_v2=ibrs option to support Kernel IBRS

Peter Zijlstra peterz@infradead.org x86/bugs: Optimize SPEC_CTRL MSR writes

Peter Zijlstra peterz@infradead.org x86/entry: Add kernel IBRS implementation

Peter Zijlstra peterz@infradead.org x86/entry: Remove skip_r11rcx

Peter Zijlstra peterz@infradead.org x86/bugs: Keep a per-CPU IA32_SPEC_CTRL value

Alexandre Chartre alexandre.chartre@oracle.com x86/bugs: Add AMD retbleed= boot parameter

Alexandre Chartre alexandre.chartre@oracle.com x86/bugs: Report AMD retbleed vulnerability

Peter Zijlstra peterz@infradead.org x86/cpufeatures: Move RETPOLINE flags to word 11

Mark Gross mgross@linux.intel.com x86/cpu: Add a steppings field to struct x86_cpu_id

Thomas Gleixner tglx@linutronix.de x86/cpu: Add consistent CPU match macros

Thomas Gleixner tglx@linutronix.de x86/devicetable: Move x86 specific macro out of generic code

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

Kan Liang kan.liang@linux.intel.com x86/cpufeature: Add facility to check for min microcode revisions

Suleiman Souhlal suleiman@google.com Revert "x86/cpu: Add a steppings field to struct x86_cpu_id"

Suleiman Souhlal suleiman@google.com 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(-)