[PATCH 00/43] x86 entry-stack and Kaiser series, 2017/11/24, v2 version
From: Ingo Molnar
Date: Fri Nov 24 2017 - 12:24:49 EST
This is a repost of the latest entry-stack plus Kaiser bits from Andy Lutomirski
(v3 series from today) and Dave Hansen (kaiser-414-tipwip-20171123 version),
on top of latest tip:x86/urgent (12a78d43de76).
This version is pretty well tested, at least on the usual x86 tree test systems.
It has a couple of merge mistakes fixed, the biggest difference is in patch #22:
x86/mm/kaiser: Prepare assembly for entry/exit CR3 switching
The other patches are identical or very close to what I posted earlier today.
Any remaining bugs caused by mis-merges, mis-backmerges or mis-fixes are mine.
Thanks,
Ingo
Andy Lutomirski (19):
x86/asm/64: Allocate and enable the SYSENTER stack
x86/dumpstack: Add get_stack_info() support for the SYSENTER stack
x86/gdt: Put per-cpu GDT remaps in ascending order
x86/fixmap: Generalize the GDT fixmap mechanism
x86/kasan/64: Teach KASAN about the cpu_entry_area
x86/asm: Fix assumptions that the HW TSS is at the beginning of cpu_tss
x86/dumpstack: Handle stack overflow on all stacks
x86/asm: Move SYSENTER_stack to the beginning of struct tss_struct
x86/asm: Remap the TSS into the cpu entry area
x86/asm/64: Separate cpu_current_top_of_stack from TSS.sp0
x86/espfix/64: Stop assuming that pt_regs is on the entry stack
x86/asm/64: Use a percpu trampoline stack for IDT entries
x86/asm/64: Return to userspace from the trampoline stack
x86/entry/64: Create a percpu SYSCALL entry trampoline
x86/irq: Remove an old outdated comment about context tracking races
x86/irq/64: In the stack overflow warning, print the offending IP
x86/entry/64: Move the IST stacks into cpu_entry_area
x86/entry/64: Remove the SYSENTER stack canary
x86/entry: Clean up SYSENTER_stack code
Dave Hansen (22):
x86/mm/kaiser: Disable global pages by default with KAISER
x86/mm/kaiser: Prepare assembly for entry/exit CR3 switching
x86/mm/kaiser: Introduce user-mapped per-cpu areas
x86/mm/kaiser: Mark per-cpu data structures required for entry/exit
x86/mm/kaiser: Unmap kernel from userspace page tables (core patch)
x86/mm/kaiser: Allow NX poison to be set in p4d/pgd
x86/mm/kaiser: Make sure static PGDs are 8k in size
x86/mm/kaiser: Map cpu entry area
x86/mm/kaiser: Map dynamically-allocated LDTs
x86/mm/kaiser: Map espfix structures
x86/mm/kaiser: Map entry stack variable
x86/mm: Move CR3 construction functions
x86/mm: Remove hard-coded ASID limit checks
x86/mm: Put mmu-to-h/w ASID translation in one place
x86/mm/kaiser: Allow flushing for future ASID switches
x86/mm/kaiser: Use PCID feature to make user and kernel switches faster
x86/mm/kaiser: Disable native VSYSCALL
x86/mm/kaiser: Add debugfs file to turn KAISER on/off at runtime
x86/mm/kaiser: Add a function to check for KAISER being enabled
x86/mm/kaiser: Un-poison PGDs at runtime
x86/mm/kaiser: Allow KAISER to be enabled/disabled at runtime
x86/mm/kaiser: Add Kconfig
Hugh Dickins (1):
x86/mm/kaiser: Map virtually-addressed performance monitoring buffers
Masami Hiramatsu (1):
x86/decoder: Add new TEST instruction pattern
Documentation/x86/kaiser.txt | 162 ++++++++
arch/x86/Kconfig | 8 +
arch/x86/boot/compressed/pagetable.c | 6 +
arch/x86/entry/calling.h | 89 ++++
arch/x86/entry/entry_32.S | 6 +-
arch/x86/entry/entry_64.S | 207 ++++++++--
arch/x86/entry/entry_64_compat.S | 31 +-
arch/x86/events/intel/ds.c | 49 ++-
arch/x86/include/asm/cpufeatures.h | 1 +
arch/x86/include/asm/desc.h | 13 +-
arch/x86/include/asm/fixmap.h | 58 ++-
arch/x86/include/asm/kaiser.h | 68 +++
arch/x86/include/asm/mmu_context.h | 29 +-
arch/x86/include/asm/pgtable.h | 19 +-
arch/x86/include/asm/pgtable_64.h | 146 +++++++
arch/x86/include/asm/pgtable_types.h | 25 +-
arch/x86/include/asm/processor.h | 49 ++-
arch/x86/include/asm/stacktrace.h | 3 +
arch/x86/include/asm/switch_to.h | 2 +-
arch/x86/include/asm/thread_info.h | 2 +-
arch/x86/include/asm/tlbflush.h | 208 ++++++++--
arch/x86/include/asm/traps.h | 1 -
arch/x86/include/uapi/asm/processor-flags.h | 3 +-
arch/x86/kernel/asm-offsets.c | 7 +
arch/x86/kernel/asm-offsets_32.c | 5 -
arch/x86/kernel/asm-offsets_64.c | 1 +
arch/x86/kernel/cpu/common.c | 139 +++++--
arch/x86/kernel/doublefault.c | 36 +-
arch/x86/kernel/dumpstack.c | 42 +-
arch/x86/kernel/dumpstack_32.c | 6 +
arch/x86/kernel/dumpstack_64.c | 6 +
arch/x86/kernel/espfix_64.c | 27 +-
arch/x86/kernel/head_64.S | 30 +-
arch/x86/kernel/irq.c | 12 -
arch/x86/kernel/irq_64.c | 4 +-
arch/x86/kernel/ldt.c | 25 +-
arch/x86/kernel/process.c | 15 +-
arch/x86/kernel/process_64.c | 3 +-
arch/x86/kernel/traps.c | 27 +-
arch/x86/kernel/vmlinux.lds.S | 10 +
arch/x86/kvm/x86.c | 3 +-
arch/x86/lib/x86-opcode-map.txt | 2 +-
arch/x86/mm/Makefile | 1 +
arch/x86/mm/init.c | 75 ++--
arch/x86/mm/kaiser.c | 620 ++++++++++++++++++++++++++++
arch/x86/mm/kasan_init_64.c | 13 +-
arch/x86/mm/pageattr.c | 18 +-
arch/x86/mm/pgtable.c | 16 +-
arch/x86/mm/tlb.c | 105 ++++-
arch/x86/power/cpu.c | 16 +-
arch/x86/xen/mmu_pv.c | 2 +-
include/asm-generic/vmlinux.lds.h | 7 +
include/linux/kaiser.h | 38 ++
include/linux/percpu-defs.h | 30 ++
init/main.c | 3 +
kernel/fork.c | 1 +
security/Kconfig | 10 +
57 files changed, 2243 insertions(+), 297 deletions(-)
create mode 100644 Documentation/x86/kaiser.txt
create mode 100644 arch/x86/include/asm/kaiser.h
create mode 100644 arch/x86/mm/kaiser.c
create mode 100644 include/linux/kaiser.h
--
2.14.1