From: "H. Peter Anvin, Intel" <h.peter.anvin@intel.com>
To: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Cc: "H. Peter Anvin" <hpa@linux.intel.com>,
Ingo Molnar <mingo@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Andy Lutomirski <luto@kernel.org>,
"Chang S . Bae" <chang.seok.bae@intel.com>,
"Markus T . Metzger" <markus.t.metzger@intel.com>,
"H . Peter Anvin" <hpa@zytor.com>
Subject: [PATCH v3 0/7] x86/ptrace: regset access to the GDT and LDT
Date: Thu, 21 Jun 2018 14:17:47 -0700 [thread overview]
Message-ID: <20180621211754.12757-1-h.peter.anvin@intel.com> (raw)
From: "H. Peter Anvin" <hpa@linux.intel.com>
Give a debugger access to the visible part of the GDT and LDT. This
allows a debugger to find out what a particular segment descriptor
corresponds to; e.g. if %cs is 16, 32, or 64 bits.
v3:
Requalify LDT segments for selectors that have actually changed.
v2:
Add missing change to elf.h for the very last patch.
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Chang S. Bae <chang.seok.bae@intel.com>
Cc: Markus T. Metzger <markus.t.metzger@intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
arch/x86/Kconfig | 4 +
arch/x86/include/asm/desc.h | 24 +++-
arch/x86/include/asm/ldt.h | 16 +++
arch/x86/include/asm/segment.h | 10 ++
arch/x86/kernel/Makefile | 3 +-
arch/x86/kernel/ldt.c | 283 ++++++++++++++++++++++++++++++++---------
arch/x86/kernel/ptrace.c | 103 ++++++++++++++-
arch/x86/kernel/tls.c | 102 +++++----------
arch/x86/kernel/tls.h | 8 +-
include/uapi/linux/elf.h | 2 +
10 files changed, 413 insertions(+), 142 deletions(-)
next reply other threads:[~2018-06-21 21:18 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-21 21:17 H. Peter Anvin, Intel [this message]
2018-06-21 21:17 ` [PATCH v3 1/7] x86/ldt: refresh %fs and %gs in refresh_ldt_segments() H. Peter Anvin, Intel
2018-06-22 14:24 ` Andy Lutomirski
2018-06-22 18:29 ` H. Peter Anvin
2018-06-22 18:47 ` Andy Lutomirski
2018-06-27 18:19 ` Andy Lutomirski
2018-06-27 18:22 ` hpa
2018-06-27 18:33 ` hpa
2018-06-28 20:33 ` Andy Lutomirski
2018-06-28 20:39 ` hpa
2018-06-21 21:17 ` [PATCH v3 2/7] x86/ldt: use a common value for read_default_ldt() H. Peter Anvin, Intel
2018-06-21 21:17 ` [PATCH v3 3/7] x86: move fill_user_desc() from tls.c to desc.h and add validity check H. Peter Anvin, Intel
2018-06-21 21:17 ` [PATCH v3 4/7] x86/tls: create an explicit config symbol for the TLS area in the GDT H. Peter Anvin, Intel
2018-06-21 21:17 ` [PATCH v3 5/7] x86/segment: add #define for the last user-visible GDT slot H. Peter Anvin, Intel
2018-06-21 21:17 ` [PATCH v3 6/7] x86/tls,ptrace: provide regset access to the GDT H. Peter Anvin, Intel
2018-06-22 14:43 ` Andy Lutomirski
2018-06-21 21:17 ` [PATCH v3 7/7] x86/ldt,ptrace: provide regset access to the LDT H. Peter Anvin, Intel
2018-06-22 14:49 ` Andy Lutomirski
2018-06-22 15:05 ` hpa
2018-06-22 15:30 ` Andy Lutomirski
2018-06-22 1:58 ` [PATCH v3 0/7] x86/ptrace: regset access to the GDT and LDT Ingo Molnar
2018-06-22 2:25 ` hpa
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