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 0/9] x86, mpx: Support 32-bit binaries on 64-bit kernels
Date: Mon, 02 Feb 2015 13:31:27 -0800 [thread overview]
Message-ID: <20150202213127.0171DBC1@viggo.jf.intel.com> (raw)
The MPX hardware structures differ in layout in 32 and 64-bit
mode. A 32-bit binary running on a 64-bit kernel needs the
32-bit structures, so we need code which switches between
the two modes.
x86: make is_64bit_mm() widely available
x86: make __VIRTUAL_MASK safe to use on 32 bit
x86, mpx: we do not allocate the bounds directory
x86, mpx: remove redundant MPX_BNDCFG_ADDR_MASK
x86, mpx: Add temporary variable to reduce masking
x86, mpx: new directory entry to addr helper
x86, mpx: do 32-bit-only cmpxchg for 32-bit apps
x86, mpx: support 32bit binaries on 64bit kernel
include/asm/mmu_context.h | 13 ++
include/asm/mpx.h | 66 ++++++------
include/asm/page_types.h | 8 +
kernel/uprobes.c | 10 -
mm/mpx.c | 241 ++++++++++++++++++++++++++++++++++++++--------
5 files changed, 255 insertions(+), 83 deletions(-)
next reply other threads:[~2015-02-02 21:34 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-02 21:31 Dave Hansen [this message]
2015-02-02 21:31 ` [PATCH 1/9] x86: make is_64bit_mm() widely available Dave Hansen
2015-02-02 21:31 ` [PATCH 2/9] x86: make __VIRTUAL_MASK safe to use on 32 bit Dave Hansen
2015-02-02 21:31 ` [PATCH 3/9] x86, mpx: we do not allocate the bounds directory Dave Hansen
2015-02-02 21:31 ` [PATCH 4/9] x86, mpx: remove redundant MPX_BNDCFG_ADDR_MASK Dave Hansen
2015-02-02 21:31 ` [PATCH 5/9] x86, mpx: Add temporary variable to reduce masking Dave Hansen
2015-02-02 21:31 ` [PATCH 6/9] x86, mpx: new directory entry to addr helper Dave Hansen
2015-02-02 21:31 ` [PATCH 7/9] x86, mpx: do 32-bit-only cmpxchg for 32-bit apps Dave Hansen
2015-02-02 21:31 ` [PATCH 8/9] x86, mpx: support 32bit binaries on 64bit kernel Dave Hansen
2015-02-02 21:31 ` [PATCH 9/9] x86, mpx: allow mixed binaries again Dave Hansen
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