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from 880584176ed7 Merge tag 'for-linus-20181201' of git://git.kernel.dk/linux-block new 4cd24de3a098 x86/retpoline: Make CONFIG_RETPOLINE depend on compiler support new ef014aae8f1c x86/retpoline: Remove minimal retpoline support new 8eb729b77faf x86/speculation: Update the TIF_SSBD comment new 24848509aa55 x86/speculation: Clean up spectre_v2_parse_cmdline() new b86bda042685 x86/speculation: Remove unnecessary ret variable in cpu_sh [...] new a8f76ae41cd6 x86/speculation: Move STIPB/IBPB string conditionals out o [...] new 34bce7c9690b x86/speculation: Disable STIBP when enhanced IBRS is in use new 26c4d75b2340 x86/speculation: Rename SSBD update functions new 01daf56875ee x86/speculation: Reorganize speculation control MSRs update new c5511d03ec09 sched/smt: Make sched_smt_present track topology new dbe733642e01 x86/Kconfig: Select SCHED_SMT if SMP enabled new 321a874a7ef8 sched/smt: Expose sched_smt_present static key new a74cfffb03b7 x86/speculation: Rework SMT state change new 130d6f946f6f x86/l1tf: Show actual SMT state new 15d6b7aab079 x86/speculation: Reorder the spec_v2 code new 8770709f4117 x86/speculation: Mark string arrays const correctly new 30ba72a990f5 x86/speculataion: Mark command line parser data __initdata new 495d470e9828 x86/speculation: Unify conditional spectre v2 print functions new fa1202ef2243 x86/speculation: Add command line control for indirect bra [...] new 5bfbe3ad5840 x86/speculation: Prepare for per task indirect branch spec [...] new ff16701a29cb x86/process: Consolidate and simplify switch_to_xtra() code new 5635d99953f0 x86/speculation: Avoid __switch_to_xtra() calls new 4c71a2b6fd7e x86/speculation: Prepare for conditional IBPB in switch_mm() new 46f7ecb1e735 ptrace: Remove unused ptrace_may_access_sched() and MODE_IBRS new e6da8bb6f9ab x86/speculation: Split out TIF update new 6d991ba509eb x86/speculation: Prevent stale SPEC_CTRL msr content new 6893a959d7fd x86/speculation: Prepare arch_smt_update() for PRCTL mode new 9137bb27e60e x86/speculation: Add prctl() control for indirect branch s [...] new 7cc765a67d8e x86/speculation: Enable prctl mode for spectre_v2_user new 6b3e64c237c0 x86/speculation: Add seccomp Spectre v2 user space protect [...] new 55a974021ec9 x86/speculation: Provide IBPB always command line options new 4b78317679c4 Merge branch 'x86-pti-for-linus' of git://git.kernel.org/p [...]

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Summary of changes: Documentation/admin-guide/kernel-parameters.txt | 56 ++- Documentation/userspace-api/spec_ctrl.rst | 9 + arch/x86/Kconfig | 12 +- arch/x86/Makefile | 5 +- arch/x86/include/asm/msr-index.h | 5 +- arch/x86/include/asm/nospec-branch.h | 26 +- arch/x86/include/asm/spec-ctrl.h | 20 +- arch/x86/include/asm/switch_to.h | 3 - arch/x86/include/asm/thread_info.h | 20 +- arch/x86/include/asm/tlbflush.h | 8 +- arch/x86/kernel/cpu/bugs.c | 525 +++++++++++++++++------- arch/x86/kernel/process.c | 101 ++++- arch/x86/kernel/process.h | 39 ++ arch/x86/kernel/process_32.c | 10 +- arch/x86/kernel/process_64.c | 10 +- arch/x86/mm/tlb.c | 115 ++++-- include/linux/ptrace.h | 17 - include/linux/sched.h | 9 + include/linux/sched/smt.h | 20 + include/uapi/linux/prctl.h | 1 + kernel/cpu.c | 15 +- kernel/ptrace.c | 10 - kernel/sched/core.c | 19 +- kernel/sched/sched.h | 4 +- scripts/Makefile.build | 2 - tools/include/uapi/linux/prctl.h | 1 + 26 files changed, 780 insertions(+), 282 deletions(-) create mode 100644 arch/x86/kernel/process.h create mode 100644 include/linux/sched/smt.h