From: "Chang S. Bae" <chang.seok.bae@intel.com>
To: Andy Lutomirski <luto@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@kernel.org>, "H . Peter Anvin" <hpa@zytor.com>,
Andi Kleen <ak@linux.intel.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>,
Markus T Metzger <markus.t.metzger@intel.com>,
Ravi Shankar <ravi.v.shankar@intel.com>,
"Chang S . Bae" <chang.seok.bae@intel.com>,
LKML <linux-kernel@vger.kernel.org>
Subject: [PATCH v4 00/13] x86: Enable FSGSBASE instructions
Date: Wed, 16 Jan 2019 14:48:36 -0800 [thread overview]
Message-ID: <20190116224849.8617-1-chang.seok.bae@intel.com> (raw)
Update 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
Update from v2 [2]:
* Separate out the preparatory patches [11] (now merged to the tip)
* 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
Andi Kleen (3):
x86/fsgsbase/64: Add intrinsics/macros 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 (6):
taint: Introduce a new taint flag (insecure)
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/sysctl/kernel.txt | 1 +
Documentation/x86/fsgs.txt | 104 +++++++++++++++
arch/x86/entry/entry_64.S | 71 ++++++++--
arch/x86/include/asm/fsgsbase.h | 126 ++++++++++++++++--
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 | 108 +++++++++++++--
include/linux/kernel.h | 3 +-
kernel/panic.c | 1 +
tools/testing/selftests/x86/fsgsbase.c | 102 +++++++++++++-
13 files changed, 523 insertions(+), 41 deletions(-)
create mode 100644 Documentation/x86/fsgs.txt
--
2.19.1
next reply other threads:[~2019-01-16 22:50 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-16 22:48 Chang S. Bae [this message]
2019-01-16 22:48 ` [PATCH v4 01/13] taint: Introduce a new taint flag (insecure) Chang S. Bae
2019-01-16 22:48 ` [PATCH v4 02/13] x86/fsgsbase/64: Add 'unsafe_fsgsbase' to enable CR4.FSGSBASE Chang S. Bae
2019-01-16 22:48 ` [PATCH v4 03/13] kbuild: Raise the minimum required binutils version to 2.21 Chang S. Bae
2019-01-16 22:48 ` [PATCH v4 04/13] x86/fsgsbase/64: Add intrinsics/macros for FSGSBASE instructions Chang S. Bae
2019-01-17 5:09 ` Andi Kleen
2019-01-17 18:04 ` Bae, Chang Seok
2019-01-16 22:48 ` [PATCH v4 05/13] x86/fsgsbase/64: Enable FSGSBASE instructions in the helper functions Chang S. Bae
2019-01-16 22:48 ` [PATCH v4 06/13] x86/fsgsbase/64: Preserve FS/GS state in __switch_to() if FSGSBASE is on Chang S. Bae
2019-01-16 22:48 ` [PATCH v4 07/13] x86/fsgsbase/64: When copying a thread, use the FSGSBASE instructions if available Chang S. Bae
2019-01-16 22:48 ` [PATCH v4 08/13] x86/fsgsbase/64: Introduce the FIND_PERCPU_BASE macro Chang S. Bae
2019-01-16 22:48 ` [PATCH v4 09/13] x86/fsgsbase/64: Use the per-CPU base as GSBASE at the paranoid_entry Chang S. Bae
2019-01-16 22:48 ` [PATCH v4 10/13] selftests/x86/fsgsbase: Test WRGSBASE Chang S. Bae
2019-01-16 22:48 ` [PATCH v4 11/13] x86/fsgsbase/64: Enable FSGSBASE by default and add a chicken bit Chang S. Bae
2019-01-16 22:48 ` [PATCH v4 12/13] x86/elf: Enumerate kernel FSGSBASE capability in AT_HWCAP2 Chang S. Bae
2019-01-16 22:48 ` [PATCH v4 13/13] x86/fsgsbase/64: Add documentation for FSGSBASE Chang S. Bae
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20190116224849.8617-1-chang.seok.bae@intel.com \
--to=chang.seok.bae@intel.com \
--cc=ak@linux.intel.com \
--cc=dave.hansen@linux.intel.com \
--cc=hpa@zytor.com \
--cc=linux-kernel@vger.kernel.org \
--cc=luto@kernel.org \
--cc=markus.t.metzger@intel.com \
--cc=mingo@kernel.org \
--cc=ravi.v.shankar@intel.com \
--cc=tglx@linutronix.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).