From: Dave Hansen <dave@sr71.net>
To: linux-kernel@vger.kernel.org
Cc: x86@kernel.org, tglx@linutronix.de, Dave Hansen <dave@sr71.net>
Subject: [PATCH 00/19] x86, mpx updates for 4.2 (take 6)
Date: Fri, 08 May 2015 11:59:48 -0700 [thread overview]
Message-ID: <20150508185948.4C19F4B0@viggo.jf.intel.com> (raw)
Changes from take 5 / v20:
* Fix get_xsave_addr() to consult xstate_bv in anticipation
of fixes to xsave code.
* Bug fix for when an VMA being unmapped has neighbors which
are bounds tables.
* Rewrite unmapping code. I didn't do this lightly. It was
not originally my own code, and I resisted changing it
because it worked. But, I started bug chasing and decided
it was unmaintainable. The rewrite ended up removing
about 20% of the unmapping code and made it much simpler.
Changes from take 4 / v19:
* Do not pass a task_struct around when we are
really just going to operate on current
Changes from take 3 / v18 (all minor):
* use DECLARE_EVENT_CLASS()/DEFINE_EVENT() for
the ranged tracepoints to save 10 lines of code.
Changes from take 2 / v17 (all minor):
* fix a couple of whitespace borkages caught by checkpatch,
and a spelling error or two.
* replace printk with pr_info() for boot disable
* change trace print format for address intervals
* fix up variable name in tsk_get_xsave_addr() comment
* remove tsk_get_xsave_field() GPL export
* fix up Qiaowei's From:
--
Hi x86 maintainers,
There are a few basic things going on here:
1. Make FPU/xsave code preempt safe and work properly
2. Add trace points to make kernel and app debugging easier
3. Add a boot-time disable for mpx
4. Rewrite the unmapping code.
5. Support 32-bit binaries to run on 64-bit kernels
This sees breakage unless either booted with 'noxsaves'
or if it has Fenghua's set from here applied:
http://lkml.kernel.org/r/1429678319-61356-1-git-send-email-fenghua.yu@intel.com
This set is also available against 4.1-rc2 in git:
git://git.kernel.org/pub/scm/linux/kernel/git/daveh/x86-mpx.git mpx-v21
Documentation/kernel-parameters.txt | 4
arch/x86/include/asm/mmu_context.h | 13
arch/x86/include/asm/mpx.h | 76 ++--
arch/x86/include/asm/processor.h | 12
arch/x86/include/asm/xsave.h | 1
arch/x86/kernel/cpu/common.c | 16
arch/x86/kernel/traps.c | 18 -
arch/x86/kernel/uprobes.c | 10
arch/x86/kernel/xsave.c | 73 +++-
arch/x86/mm/mpx.c | 634 +++++++++++++++++++++---------------
kernel/sys.c | 8
11 files changed, 543 insertions(+), 322 deletions(-)
next reply other threads:[~2015-05-08 18:59 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-08 18:59 Dave Hansen [this message]
2015-05-08 18:59 ` [PATCH 01/19] x86, mpx, xsave: fix up bad get_xsave_addr() assumptions Dave Hansen
2015-05-18 19:34 ` Thomas Gleixner
2015-05-08 18:59 ` [PATCH 02/19] x86, fpu: wrap get_xsave_addr() to make it safer Dave Hansen
2015-05-18 19:38 ` Thomas Gleixner
2015-05-18 19:42 ` Thomas Gleixner
2015-05-08 18:59 ` [PATCH 03/19] x86, mpx: use new tsk_get_xsave_addr() Dave Hansen
2015-05-18 20:36 ` Thomas Gleixner
2015-05-19 0:01 ` Dave Hansen
2015-05-08 18:59 ` [PATCH 04/19] x86, mpx: cleanup: do not pass task around when unnecessary Dave Hansen
2015-05-18 20:38 ` Thomas Gleixner
2015-05-08 18:59 ` [PATCH 05/19] x86, mpx: remove redundant MPX_BNDCFG_ADDR_MASK Dave Hansen
2015-05-18 20:38 ` Thomas Gleixner
2015-05-08 18:59 ` [PATCH 06/19] x86, mpx: we do not allocate the bounds directory Dave Hansen
2015-05-18 20:43 ` Thomas Gleixner
2015-05-08 18:59 ` [PATCH 07/19] x86, mpx: boot-time disable Dave Hansen
2015-05-18 20:45 ` Thomas Gleixner
2015-05-08 18:59 ` [PATCH 08/19] x86, mpx: trace #BR exceptions Dave Hansen
2015-05-18 21:00 ` Thomas Gleixner
2015-05-08 18:59 ` [PATCH 10/19] x86, mpx: trace ranged MPX operations Dave Hansen
2015-05-18 21:04 ` Thomas Gleixner
2015-05-08 18:59 ` [PATCH 09/19] x86, mpx: trace entry to bounds exception paths Dave Hansen
2015-05-18 20:58 ` Thomas Gleixner
2015-05-18 23:06 ` Dave Hansen
2015-05-18 23:35 ` Thomas Gleixner
2015-05-08 18:59 ` [PATCH 11/19] x86, mpx: trace allocation of new bounds tables Dave Hansen
2015-05-18 21:04 ` Thomas Gleixner
2015-05-08 18:59 ` [PATCH 12/19] x86: make is_64bit_mm() widely available Dave Hansen
2015-05-18 21:06 ` Thomas Gleixner
2015-05-08 18:59 ` [PATCH 14/19] x86, mpx: new directory entry to addr helper Dave Hansen
2015-05-18 21:10 ` Thomas Gleixner
2015-05-08 18:59 ` [PATCH 13/19] x86, mpx: Add temporary variable to reduce masking Dave Hansen
2015-05-18 21:07 ` Thomas Gleixner
2015-05-08 18:59 ` [PATCH 15/19] x86, mpx: do 32-bit-only cmpxchg for 32-bit apps Dave Hansen
2015-05-18 21:22 ` Thomas Gleixner
2015-05-08 18:59 ` [PATCH 16/19] x86, mpx: support 32-bit binaries on 64-bit kernel Dave Hansen
2015-05-18 21:53 ` Thomas Gleixner
2015-05-18 23:29 ` Dave Hansen
2015-05-18 23:37 ` Thomas Gleixner
2015-05-08 18:59 ` [PATCH 17/19] x86, mpx: rewrite unmap code Dave Hansen
2015-05-18 21:55 ` Thomas Gleixner
2015-05-08 18:59 ` [PATCH 18/19] x86, mpx: do not count MPX VMAs as neighbors when unmapping Dave Hansen
2015-05-18 21:54 ` Thomas Gleixner
2015-05-08 18:59 ` [PATCH 19/19] x86, mpx: allow mixed binaries again Dave Hansen
2015-05-18 21:55 ` Thomas Gleixner
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