[PATCH 5.18 00/61] 5.18.12-rc1 review

From: Greg Kroah-Hartman
Date: Tue Jul 12 2022 - 15:08:11 EST

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This is the start of the stable review cycle for the 5.18.12 release.
There are 61 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, 14 Jul 2022 18:32:19 +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-5.18.12-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-5.18.y
and the diffstat can be found below.

thanks,

greg k-h

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

Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Linux 5.18.12-rc1

Thomas Gleixner <tglx@xxxxxxxxxxxxx>
x86/static_call: Serialize __static_call_fixup() properly

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

Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
x86/kexec: Disable RET on kexec

Thadeu Lima de Souza Cascardo <cascardo@xxxxxxxxxxxxx>
x86/bugs: Do not enable IBPB-on-entry when IBPB is not supported

Peter Zijlstra <peterz@xxxxxxxxxxxxx>
x86/entry: Move PUSH_AND_CLEAR_REGS() back into error_entry

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

Peter Zijlstra <peterz@xxxxxxxxxxxxx>
x86/retbleed: Add fine grained Kconfig knobs

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>
KVM: VMX: Prevent RSB underflow before vmenter

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>
KVM: VMX: Convert launched argument to flags

Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
KVM: VMX: Flatten __vmx_vcpu_run()

Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
objtool: Re-add UNWIND_HINT_{SAVE_RESTORE}

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/cpu/amd: Add Spectral Chicken

Thadeu Lima de Souza Cascardo <cascardo@xxxxxxxxxxxxx>
objtool: Add entry UNRET validation

Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
x86/bugs: Do IBPB fallback check only once

Peter Zijlstra <peterz@xxxxxxxxxxxxx>
x86/bugs: Add retbleed=ibpb

Peter Zijlstra <peterz@xxxxxxxxxxxxx>
x86/xen: Add UNTRAIN_RET

Peter Zijlstra <peterz@xxxxxxxxxxxxx>
x86/xen: Rename SYS* entry points

Peter Zijlstra <peterz@xxxxxxxxxxxxx>
objtool: Update Retpoline validation

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

Thadeu Lima de Souza Cascardo <cascardo@xxxxxxxxxxxxx>
x86/entry: Add kernel IBRS implementation

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

Kim Phillips <kim.phillips@xxxxxxx>
x86/bugs: Enable STIBP for JMP2RET

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

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

Thadeu Lima de Souza Cascardo <cascardo@xxxxxxxxxxxxx>
x86: Add magic AMD return-thunk

Peter Zijlstra <peterz@xxxxxxxxxxxxx>
objtool: Treat .text.__x86.* as noinstr

Peter Zijlstra <peterz@xxxxxxxxxxxxx>
x86/entry: Avoid very early RET

Peter Zijlstra <peterz@xxxxxxxxxxxxx>
x86: Use return-thunk in asm code

Kim Phillips <kim.phillips@xxxxxxx>
x86/sev: Avoid using __x86_return_thunk

Peter Zijlstra <peterz@xxxxxxxxxxxxx>
x86/vsyscall_emu/64: Don't use RET in vsyscall emulation

Peter Zijlstra <peterz@xxxxxxxxxxxxx>
x86/kvm: Fix SETcc emulation for return thunks

Peter Zijlstra <peterz@xxxxxxxxxxxxx>
x86/bpf: Use alternative RET encoding

Peter Zijlstra <peterz@xxxxxxxxxxxxx>
x86/ftrace: Use alternative RET encoding

Peter Zijlstra <peterz@xxxxxxxxxxxxx>
x86,static_call: Use alternative RET encoding

Thadeu Lima de Souza Cascardo <cascardo@xxxxxxxxxxxxx>
objtool: skip non-text sections when adding return-thunk sites

Peter Zijlstra <peterz@xxxxxxxxxxxxx>
x86,objtool: Create .return_sites

Peter Zijlstra <peterz@xxxxxxxxxxxxx>
x86: Undo return-thunk damage

Peter Zijlstra <peterz@xxxxxxxxxxxxx>
x86/retpoline: Use -mfunction-return

Peter Zijlstra <peterz@xxxxxxxxxxxxx>
x86/retpoline: Swizzle retpoline thunk

Peter Zijlstra <peterz@xxxxxxxxxxxxx>
x86/retpoline: Cleanup some #ifdefery

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

Peter Zijlstra <peterz@xxxxxxxxxxxxx>
x86/kvm/vmx: Make noinstr clean

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

Lai Jiangshan <jiangshan.ljs@xxxxxxxxxxxx>
x86/entry: Don't call error_entry() for XENPV

Lai Jiangshan <jiangshan.ljs@xxxxxxxxxxxx>
x86/entry: Move PUSH_AND_CLEAR_REGS out of error_entry()

Lai Jiangshan <jiangshan.ljs@xxxxxxxxxxxx>
x86/entry: Switch the stack after error_entry() returns

Lai Jiangshan <jiangshan.ljs@xxxxxxxxxxxx>
x86/traps: Use pt_regs directly in fixup_bad_iret()

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

Diffstat:

Documentation/admin-guide/kernel-parameters.txt | 25 ++
Makefile | 4 +-
arch/x86/Kconfig | 103 +++--
arch/x86/Makefile | 6 +
arch/x86/entry/Makefile | 2 +-
arch/x86/entry/calling.h | 72 +++-
arch/x86/entry/entry.S | 22 ++
arch/x86/entry/entry_32.S | 2 -
arch/x86/entry/entry_64.S | 88 ++++-
arch/x86/entry/entry_64_compat.S | 21 +-
arch/x86/entry/vdso/Makefile | 1 +
arch/x86/entry/vsyscall/vsyscall_emu_64.S | 9 +-
arch/x86/include/asm/alternative.h | 1 +
arch/x86/include/asm/cpufeatures.h | 12 +-
arch/x86/include/asm/disabled-features.h | 21 +-
arch/x86/include/asm/linkage.h | 8 +
arch/x86/include/asm/msr-index.h | 13 +
arch/x86/include/asm/nospec-branch.h | 68 +++-
arch/x86/include/asm/static_call.h | 19 +-
arch/x86/include/asm/traps.h | 2 +-
arch/x86/include/asm/unwind_hints.h | 14 +-
arch/x86/kernel/alternative.c | 69 ++++
arch/x86/kernel/asm-offsets.c | 6 +
arch/x86/kernel/cpu/amd.c | 46 ++-
arch/x86/kernel/cpu/bugs.c | 475 ++++++++++++++++++++----
arch/x86/kernel/cpu/common.c | 61 +--
arch/x86/kernel/cpu/cpu.h | 2 +
arch/x86/kernel/cpu/hygon.c | 6 +
arch/x86/kernel/cpu/scattered.c | 1 +
arch/x86/kernel/ftrace.c | 7 +-
arch/x86/kernel/head_64.S | 5 +
arch/x86/kernel/module.c | 8 +-
arch/x86/kernel/process.c | 2 +-
arch/x86/kernel/relocate_kernel_32.S | 25 +-
arch/x86/kernel/relocate_kernel_64.S | 23 +-
arch/x86/kernel/static_call.c | 51 ++-
arch/x86/kernel/traps.c | 19 +-
arch/x86/kernel/vmlinux.lds.S | 9 +-
arch/x86/kvm/emulate.c | 28 +-
arch/x86/kvm/svm/vmenter.S | 18 +
arch/x86/kvm/vmx/capabilities.h | 4 +-
arch/x86/kvm/vmx/nested.c | 2 +-
arch/x86/kvm/vmx/run_flags.h | 8 +
arch/x86/kvm/vmx/vmenter.S | 194 ++++++----
arch/x86/kvm/vmx/vmx.c | 84 +++--
arch/x86/kvm/vmx/vmx.h | 10 +-
arch/x86/kvm/vmx/vmx_ops.h | 2 +-
arch/x86/kvm/x86.c | 4 +-
arch/x86/lib/memmove_64.S | 7 +-
arch/x86/lib/retpoline.S | 79 +++-
arch/x86/mm/mem_encrypt_boot.S | 10 +-
arch/x86/net/bpf_jit_comp.c | 26 +-
arch/x86/xen/setup.c | 6 +-
arch/x86/xen/xen-asm.S | 30 +-
arch/x86/xen/xen-head.S | 1 +
arch/x86/xen/xen-ops.h | 6 +-
drivers/base/cpu.c | 8 +
drivers/idle/intel_idle.c | 44 ++-
include/linux/cpu.h | 2 +
include/linux/kvm_host.h | 2 +-
include/linux/objtool.h | 9 +-
scripts/Makefile.build | 1 +
scripts/link-vmlinux.sh | 3 +
security/Kconfig | 11 -
tools/arch/x86/include/asm/msr-index.h | 9 +
tools/include/linux/objtool.h | 9 +-
tools/objtool/arch/x86/decode.c | 5 +
tools/objtool/builtin-check.c | 4 +-
tools/objtool/check.c | 331 ++++++++++++++++-
tools/objtool/include/objtool/arch.h | 1 +
tools/objtool/include/objtool/builtin.h | 2 +-
tools/objtool/include/objtool/check.h | 24 +-
tools/objtool/include/objtool/elf.h | 1 +
tools/objtool/include/objtool/objtool.h | 1 +
tools/objtool/objtool.c | 1 +
75 files changed, 1890 insertions(+), 425 deletions(-)

Next message: Greg Kroah-Hartman: "[PATCH 5.18 03/61] x86/entry: Move PUSH_AND_CLEAR_REGS out of error_entry()"
Previous message: Greg Kroah-Hartman: "[PATCH 5.15 74/78] x86/entry: Move PUSH_AND_CLEAR_REGS() back into error_entry"
Next in thread: Greg Kroah-Hartman: "[PATCH 5.18 01/61] x86/traps: Use pt_regs directly in fixup_bad_iret()"
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