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* [PATCH v3 0/7] x86: infrastructure to enable FSGSBASE
@ 2018-06-07 17:06 Chang S. Bae
  2018-06-07 17:06 ` [PATCH v3 1/7] x86/fsgsbase/64: Introduce FS/GS base helper functions Chang S. Bae
                   ` (6 more replies)
  0 siblings, 7 replies; 12+ messages in thread
From: Chang S. Bae @ 2018-06-07 17:06 UTC (permalink / raw)
  To: Andy Lutomirski, H . Peter Anvin, Thomas Gleixner, Ingo Molnar
  Cc: Andi Kleen, Dave Hansen, Markus T Metzger, Ravi V . Shankar,
	Chang S . Bae, LKML

Given feedbacks from [1], it was asked to make first a few
patches ready as soon as possible. To make FSGSBASE facilitated,
some helper functions and refactoring work are incorporated.
Besides that, it includes Andy's fix for accurate FS/GS base read
and cleanup for the vDSO initialization.

Changes from V2 [3]:
* Bisect the CPU number initialization patch
* Drop patches for introducing i386 CPU_NUMBER and switching
write_rdtscp_aux() to use wrmsr_safe()

Changes from V1 [2]:
* Rename the x86-64 CPU_NUMBER segment from PER_CPU
* Add i386 CPU_NUMBER equivalent to x86-64 at GDT entry 23
* Add additional helper function to store CPU number
* Switch write_rdtscp_aux() to use wrmsr_safe()

[1] FSGSBASE patch set V2: https://lkml.org/lkml/2018/5/31/686
[2] infrastructure for FSGSBASE V1: https://lkml.org/lkml/2018/6/4/887
[3] infrastructure for FSGSBASE V2: https://lkml.org/lkml/2018/6/6/582

Andy Lutomirski (1):
  x86/fsgsbase/64: Make ptrace read FS/GS base accurately

Chang S. Bae (6):
  x86/fsgsbase/64: Introduce FS/GS base helper functions
  x86/fsgsbase/64: Use FS/GS base helpers in core dump
  x86/fsgsbase/64: Factor out load FS/GS segments from __switch_to
  x86/segments/64: Rename PER_CPU segment to CPU_NUMBER
  x86/vdso: Introduce CPU number helper functions
  x86/vdso: Move out the CPU number store

 arch/x86/entry/vdso/vgetcpu.c   |   4 +-
 arch/x86/entry/vdso/vma.c       |  38 +--------
 arch/x86/include/asm/elf.h      |   6 +-
 arch/x86/include/asm/fsgsbase.h |  47 +++++++++++
 arch/x86/include/asm/segment.h  |  33 +++++++-
 arch/x86/include/asm/vgtod.h    |   4 +-
 arch/x86/kernel/cpu/common.c    |  13 +++
 arch/x86/kernel/process_64.c    | 181 +++++++++++++++++++++++++++++++---------
 arch/x86/kernel/ptrace.c        |  28 ++-----
 arch/x86/kernel/setup_percpu.c  |  25 ++++++
 10 files changed, 273 insertions(+), 106 deletions(-)
 create mode 100644 arch/x86/include/asm/fsgsbase.h

-- 
2.7.4

^ permalink raw reply	[flat|nested] 12+ messages in thread

end of thread, other threads:[~2018-06-18 23:12 UTC | newest]

Thread overview: 12+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-06-07 17:06 [PATCH v3 0/7] x86: infrastructure to enable FSGSBASE Chang S. Bae
2018-06-07 17:06 ` [PATCH v3 1/7] x86/fsgsbase/64: Introduce FS/GS base helper functions Chang S. Bae
2018-06-07 17:06 ` [PATCH v3 2/7] x86/fsgsbase/64: Make ptrace read FS/GS base accurately Chang S. Bae
2018-06-07 17:06 ` [PATCH v3 3/7] x86/fsgsbase/64: Use FS/GS base helpers in core dump Chang S. Bae
2018-06-07 17:06 ` [PATCH v3 4/7] x86/fsgsbase/64: Factor out load FS/GS segments from __switch_to Chang S. Bae
2018-06-18 22:06   ` Andy Lutomirski
2018-06-07 17:06 ` [PATCH v3 5/7] x86/segments/64: Rename PER_CPU segment to CPU_NUMBER Chang S. Bae
2018-06-07 17:06 ` [PATCH v3 6/7] x86/vdso: Introduce CPU number helper functions Chang S. Bae
2018-06-18 22:07   ` Andy Lutomirski
2018-06-07 17:06 ` [PATCH v3 7/7] x86/vdso: Move out the CPU number store Chang S. Bae
2018-06-18 22:08   ` Andy Lutomirski
2018-06-18 23:12     ` Bae, Chang Seok

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