[PATCH 5.16 00/37] 5.16.14-rc1 review

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This is the start of the stable review cycle for the 5.16.14 release.
There are 37 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 Fri, 11 Mar 2022 15:58:48 +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-5.16.14-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-5.16.y
and the diffstat can be found below.

thanks,

greg k-h

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

Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
    Linux 5.16.14-rc1

Emmanuel Gil Peyrot <linkmauve@xxxxxxxxxxxx>
    ARM: fix build error when BPF_SYSCALL is disabled

James Morse <james.morse@xxxxxxx>
    arm64: proton-pack: Include unprivileged eBPF status in Spectre v2 mitigation reporting

James Morse <james.morse@xxxxxxx>
    arm64: Use the clearbhb instruction in mitigations

James Morse <james.morse@xxxxxxx>
    KVM: arm64: Allow SMCCC_ARCH_WORKAROUND_3 to be discovered and migrated

James Morse <james.morse@xxxxxxx>
    arm64: Mitigate spectre style branch history side channels

James Morse <james.morse@xxxxxxx>
    arm64: proton-pack: Report Spectre-BHB vulnerabilities as part of Spectre-v2

James Morse <james.morse@xxxxxxx>
    arm64: Add percpu vectors for EL1

James Morse <james.morse@xxxxxxx>
    arm64: entry: Add macro for reading symbol addresses from the trampoline

James Morse <james.morse@xxxxxxx>
    arm64: entry: Add vectors that have the bhb mitigation sequences

James Morse <james.morse@xxxxxxx>
    arm64: entry: Add non-kpti __bp_harden_el1_vectors for mitigations

James Morse <james.morse@xxxxxxx>
    arm64: entry: Allow the trampoline text to occupy multiple pages

James Morse <james.morse@xxxxxxx>
    arm64: entry: Make the kpti trampoline's kpti sequence optional

James Morse <james.morse@xxxxxxx>
    arm64: entry: Move trampoline macros out of ifdef'd section

James Morse <james.morse@xxxxxxx>
    arm64: entry: Don't assume tramp_vectors is the start of the vectors

James Morse <james.morse@xxxxxxx>
    arm64: entry: Allow tramp_alias to access symbols after the 4K boundary

James Morse <james.morse@xxxxxxx>
    arm64: entry: Move the trampoline data page before the text page

James Morse <james.morse@xxxxxxx>
    arm64: entry: Free up another register on kpti's tramp_exit path

James Morse <james.morse@xxxxxxx>
    arm64: entry: Make the trampoline cleanup optional

James Morse <james.morse@xxxxxxx>
    KVM: arm64: Allow indirect vectors to be used without SPECTRE_V3A

James Morse <james.morse@xxxxxxx>
    arm64: spectre: Rename spectre_v4_patch_fw_mitigation_conduit

James Morse <james.morse@xxxxxxx>
    arm64: entry.S: Add ventry overflow sanity checks

Joey Gouly <joey.gouly@xxxxxxx>
    arm64: cpufeature: add HWCAP for FEAT_RPRES

Joey Gouly <joey.gouly@xxxxxxx>
    arm64: cpufeature: add HWCAP for FEAT_AFP

Joey Gouly <joey.gouly@xxxxxxx>
    arm64: add ID_AA64ISAR2_EL1 sys register

Russell King (Oracle) <rmk+kernel@xxxxxxxxxxxxxxx>
    ARM: include unprivileged BPF status in Spectre V2 reporting

Russell King (Oracle) <rmk+kernel@xxxxxxxxxxxxxxx>
    ARM: Spectre-BHB workaround

Russell King (Oracle) <rmk+kernel@xxxxxxxxxxxxxxx>
    ARM: use LOADADDR() to get load address of sections

Russell King (Oracle) <rmk+kernel@xxxxxxxxxxxxxxx>
    ARM: early traps initialisation

Russell King (Oracle) <rmk+kernel@xxxxxxxxxxxxxxx>
    ARM: report Spectre v2 status through sysfs

Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
    x86/speculation: Warn about eIBRS + LFENCE + Unprivileged eBPF + SMT

Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
    x86/speculation: Warn about Spectre v2 LFENCE mitigation

Kim Phillips <kim.phillips@xxxxxxx>
    x86/speculation: Update link to AMD speculation whitepaper

Kim Phillips <kim.phillips@xxxxxxx>
    x86/speculation: Use generic retpoline by default on AMD

Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
    x86/speculation: Include unprivileged eBPF status in Spectre v2 mitigation reporting

Peter Zijlstra <peterz@xxxxxxxxxxxxx>
    Documentation/hw-vuln: Update spectre doc

Peter Zijlstra <peterz@xxxxxxxxxxxxx>
    x86/speculation: Add eIBRS + Retpoline options

Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
    x86/speculation: Rename RETPOLINE_AMD to RETPOLINE_LFENCE


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

Diffstat:

 Documentation/admin-guide/hw-vuln/spectre.rst   |  50 +--
 Documentation/admin-guide/kernel-parameters.txt |   8 +-
 Documentation/arm64/cpu-feature-registers.rst   |  17 ++
 Documentation/arm64/elf_hwcaps.rst              |   8 +
 Makefile                                        |   4 +-
 arch/arm/include/asm/assembler.h                |  10 +
 arch/arm/include/asm/spectre.h                  |  32 ++
 arch/arm/include/asm/vmlinux.lds.h              |  35 ++-
 arch/arm/kernel/Makefile                        |   2 +
 arch/arm/kernel/entry-armv.S                    |  79 ++++-
 arch/arm/kernel/entry-common.S                  |  24 ++
 arch/arm/kernel/spectre.c                       |  71 +++++
 arch/arm/kernel/traps.c                         |  65 +++-
 arch/arm/mm/Kconfig                             |  11 +
 arch/arm/mm/proc-v7-bugs.c                      | 207 ++++++++++---
 arch/arm64/Kconfig                              |   9 +
 arch/arm64/include/asm/assembler.h              |  53 ++++
 arch/arm64/include/asm/cpu.h                    |   1 +
 arch/arm64/include/asm/cpufeature.h             |  29 ++
 arch/arm64/include/asm/cputype.h                |   8 +
 arch/arm64/include/asm/fixmap.h                 |   6 +-
 arch/arm64/include/asm/hwcap.h                  |   2 +
 arch/arm64/include/asm/insn.h                   |   1 +
 arch/arm64/include/asm/kvm_host.h               |   5 +
 arch/arm64/include/asm/sections.h               |   5 +
 arch/arm64/include/asm/spectre.h                |   4 +
 arch/arm64/include/asm/sysreg.h                 |  18 ++
 arch/arm64/include/asm/vectors.h                |  73 +++++
 arch/arm64/include/uapi/asm/hwcap.h             |   2 +
 arch/arm64/include/uapi/asm/kvm.h               |   5 +
 arch/arm64/kernel/cpu_errata.c                  |   7 +
 arch/arm64/kernel/cpufeature.c                  |  25 ++
 arch/arm64/kernel/cpuinfo.c                     |   3 +
 arch/arm64/kernel/entry.S                       | 214 +++++++++----
 arch/arm64/kernel/image-vars.h                  |   4 +
 arch/arm64/kernel/proton-pack.c                 | 391 +++++++++++++++++++++++-
 arch/arm64/kernel/vmlinux.lds.S                 |   2 +-
 arch/arm64/kvm/arm.c                            |   5 +-
 arch/arm64/kvm/hyp/hyp-entry.S                  |   9 +
 arch/arm64/kvm/hyp/nvhe/mm.c                    |   4 +-
 arch/arm64/kvm/hyp/vhe/switch.c                 |   9 +-
 arch/arm64/kvm/hypercalls.c                     |  12 +
 arch/arm64/kvm/psci.c                           |  18 +-
 arch/arm64/kvm/sys_regs.c                       |   2 +-
 arch/arm64/mm/mmu.c                             |  12 +-
 arch/arm64/tools/cpucaps                        |   1 +
 arch/x86/include/asm/cpufeatures.h              |   2 +-
 arch/x86/include/asm/nospec-branch.h            |  16 +-
 arch/x86/kernel/alternative.c                   |   8 +-
 arch/x86/kernel/cpu/bugs.c                      | 204 ++++++++++---
 arch/x86/lib/retpoline.S                        |   2 +-
 arch/x86/net/bpf_jit_comp.c                     |   2 +-
 include/linux/arm-smccc.h                       |   5 +
 include/linux/bpf.h                             |  12 +
 kernel/sysctl.c                                 |   7 +
 tools/arch/x86/include/asm/cpufeatures.h        |   2 +-
 56 files changed, 1606 insertions(+), 216 deletions(-)





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