From: "Chang S. Bae" <chang.seok.bae@intel.com>
To: Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@kernel.org>, Andy Lutomirski <luto@kernel.org>,
"H . Peter Anvin" <hpa@zytor.com>,
Andi Kleen <ak@linux.intel.com>
Cc: Ravi Shankar <ravi.v.shankar@intel.com>,
"Chang S . Bae" <chang.seok.bae@intel.com>,
LKML <linux-kernel@vger.kernel.org>
Subject: [RESEND PATCH v6 00/12] x86: Enable FSGSBASE instructions
Date: Fri, 15 Mar 2019 13:06:33 -0700 [thread overview]
Message-ID: <1552680405-5265-1-git-send-email-chang.seok.bae@intel.com> (raw)
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
next reply other threads:[~2019-03-15 20:07 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-15 20:06 Chang S. Bae [this message]
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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