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* [RESEND PATCH v6 00/12] x86: Enable FSGSBASE instructions
@ 2019-03-15 20:06 Chang S. Bae
  2019-03-15 20:06 ` [RESEND PATCH v6 01/12] x86/fsgsbase/64: Add 'unsafe_fsgsbase' to enable CR4.FSGSBASE Chang S. Bae
                   ` (12 more replies)
  0 siblings, 13 replies; 34+ messages in thread
From: Chang S. Bae @ 2019-03-15 20:06 UTC (permalink / raw)
  To: Thomas Gleixner, Ingo Molnar, Andy Lutomirski, H . Peter Anvin,
	Andi Kleen
  Cc: Ravi Shankar, Chang S . Bae, LKML

Updates from v5 [5]:
* Drop the new tain flag (TAINT_INSECURE)
* Cleanup copy_thread_tls(), some changelog, and unnecessary comments on
  assembly macros
* Rearrange some helper updates appropriately (from patch 4 to 6)

Updates from v4 [4]:
* Remove the FSGSBASE assembly macros

Updates from v3 [3]:
* Raise minimum binutils requirement to use the new instructions directly
* Optimize FIND_PERCPU_BASE macro
* Rename some helper functions, __{rd,wr}gsbase_inactive()
* Use NOKPROBE_SYMBOL instead of __kprobes
* Rebase on top of the helper function fix [7]

Update from v2 [2]:
* Separate out the preparatory patches [6] (merged as of now)
* Bisect the paranoid_entry update patch
* Edit minor nits

Updates from v1 [1]:
* Update the GSBASE update mechanism on the paranoid entry/exit.
* Exclude ptracer backward compatibility patches.
* Include FSGSBASE documentation and enumerating capability
  for user space
* Add the TAINT_INSECURE flag.

[1] Version 1: https://lore.kernel.org/patchwork/cover/934843
[2] Version 2: https://lore.kernel.org/patchwork/cover/912063
[3] Version 3: https://lore.kernel.org/patchwork/cover/1002725
[4] Version 4: https://lore.kernel.org/patchwork/cover/1032799
[5] Version 5: https://lore.kernel.org/patchwork/cover/1038035
[6] https://lore.kernel.org/patchwork/cover/988180
[7] https://lore.kernel.org/patchwork/patch/1017513

Andi Kleen (3):
  x86/fsgsbase/64: Add intrinsics for FSGSBASE instructions
  x86/elf: Enumerate kernel FSGSBASE capability in AT_HWCAP2
  x86/fsgsbase/64: Add documentation for FSGSBASE

Andy Lutomirski (4):
  x86/fsgsbase/64: Add 'unsafe_fsgsbase' to enable CR4.FSGSBASE
  x86/fsgsbase/64: Preserve FS/GS state in __switch_to() if FSGSBASE is
    on
  selftests/x86/fsgsbase: Test WRGSBASE
  x86/fsgsbase/64: Enable FSGSBASE by default and add a chicken bit

Chang S. Bae (5):
  kbuild: Raise the minimum required binutils version to 2.21
  x86/fsgsbase/64: Enable FSGSBASE instructions in the helper functions
  x86/fsgsbase/64: When copying a thread, use the FSGSBASE instructions
    if available
  x86/fsgsbase/64: Introduce the FIND_PERCPU_BASE macro
  x86/fsgsbase/64: Use the per-CPU base as GSBASE at the paranoid_entry

 .../admin-guide/kernel-parameters.txt         |   2 +
 Documentation/process/changes.rst             |   6 +-
 Documentation/x86/fsgs.txt                    | 104 +++++++++++++++++
 arch/x86/entry/entry_64.S                     |  71 +++++++++---
 arch/x86/include/asm/fsgsbase.h               |  95 ++++++++++++++--
 arch/x86/include/asm/inst.h                   |  15 +++
 arch/x86/include/uapi/asm/hwcap2.h            |   3 +
 arch/x86/kernel/cpu/common.c                  |  22 ++++
 arch/x86/kernel/process_64.c                  | 105 ++++++++++++++++--
 tools/testing/selftests/x86/fsgsbase.c        | 102 ++++++++++++++++-
 10 files changed, 484 insertions(+), 41 deletions(-)
 create mode 100644 Documentation/x86/fsgs.txt

-- 
2.19.1


^ permalink raw reply	[flat|nested] 34+ messages in thread

end of thread, other threads:[~2019-05-06 22:56 UTC | newest]

Thread overview: 34+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-03-15 20:06 [RESEND PATCH v6 00/12] x86: Enable FSGSBASE instructions Chang S. Bae
2019-03-15 20:06 ` [RESEND PATCH v6 01/12] x86/fsgsbase/64: Add 'unsafe_fsgsbase' to enable CR4.FSGSBASE Chang S. Bae
2019-03-15 20:06 ` [RESEND PATCH v6 02/12] kbuild: Raise the minimum required binutils version to 2.21 Chang S. Bae
2019-03-15 20:06 ` [RESEND PATCH v6 03/12] x86/fsgsbase/64: Add intrinsics for FSGSBASE instructions Chang S. Bae
2019-03-15 20:06 ` [RESEND PATCH v6 04/12] x86/fsgsbase/64: Enable FSGSBASE instructions in the helper functions Chang S. Bae
2019-03-25 11:38   ` Thomas Gleixner
2019-03-25 12:46     ` Thomas Gleixner
2019-03-25 13:05       ` Thomas Gleixner
2019-03-26  0:38     ` Andi Kleen
2019-03-26 15:01       ` New feature/ABI review process [was Re: [RESEND PATCH v6 04/12] x86/fsgsbase/64:..] Thomas Gleixner
2019-03-26 22:56         ` Andi Kleen
2019-03-27 21:15           ` Thomas Gleixner
2019-03-15 20:06 ` [RESEND PATCH v6 05/12] x86/fsgsbase/64: Preserve FS/GS state in __switch_to() if FSGSBASE is on Chang S. Bae
2019-03-15 20:06 ` [RESEND PATCH v6 06/12] x86/fsgsbase/64: When copying a thread, use the FSGSBASE instructions if available Chang S. Bae
2019-03-15 20:06 ` [RESEND PATCH v6 07/12] x86/fsgsbase/64: Introduce the FIND_PERCPU_BASE macro Chang S. Bae
2019-03-25  9:02   ` Thomas Gleixner
2019-05-01 13:52     ` Bae, Chang Seok
2019-03-15 20:06 ` [RESEND PATCH v6 08/12] x86/fsgsbase/64: Use the per-CPU base as GSBASE at the paranoid_entry Chang S. Bae
2019-03-25  9:44   ` Thomas Gleixner
2019-04-05  8:35     ` Thomas Gleixner
2019-04-05 13:50       ` Andy Lutomirski
2019-05-01 13:52         ` Bae, Chang Seok
2019-05-01 17:40           ` Andy Lutomirski
2019-05-01 18:01             ` Bae, Chang Seok
     [not found]               ` <7029A32B-958E-4C1E-8B5F-D49BA68E4755@intel.com>
2019-05-01 20:25                 ` Andy Lutomirski
2019-05-01 21:04                   ` Bae, Chang Seok
2019-05-02  0:29                     ` Andy Lutomirski
2019-05-06 22:56     ` Bae, Chang Seok
2019-03-15 20:06 ` [RESEND PATCH v6 09/12] selftests/x86/fsgsbase: Test WRGSBASE Chang S. Bae
2019-03-15 20:06 ` [RESEND PATCH v6 10/12] x86/fsgsbase/64: Enable FSGSBASE by default and add a chicken bit Chang S. Bae
2019-03-15 20:06 ` [RESEND PATCH v6 11/12] x86/elf: Enumerate kernel FSGSBASE capability in AT_HWCAP2 Chang S. Bae
2019-03-15 20:06 ` [RESEND PATCH v6 12/12] x86/fsgsbase/64: Add documentation for FSGSBASE Chang S. Bae
2019-03-30 16:15   ` Randy Dunlap
2019-03-26  0:43 ` [RESEND PATCH v6 00/12] x86: Enable FSGSBASE instructions Andy Lutomirski

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