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| author | Dave Hansen <dave.hansen@linux.intel.com> | 2015-06-07 11:37:05 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-06-09 12:24:34 +0200 |
| commit | 613fcb7d3c79ec25b5913a6aa974c9047c31e68c (patch) | |
| tree | cf4b979e9bf8a951a63eb71ddcd536508148e05e /ipc/ipc_sysctl.c | |
| parent | 6ac52bb4913eadfa327138b91aab5d37234a2c3b (diff) | |
| download | linux-613fcb7d3c79ec25b5913a6aa974c9047c31e68c.tar.bz2 | |
x86/mpx: Support 32-bit binaries on 64-bit kernels
Right now, the kernel can only switch between 64-bit and 32-bit
binaries at compile time. This patch adds support for 32-bit
binaries on 64-bit kernels when we support ia32 emulation.
We essentially choose which set of table sizes to use when doing
arithmetic for the bounds table calculations.
This also uses a different approach for calculating the table
indexes than before. I think the new one makes it much more
clear what is going on, and allows us to share more code between
the 32-bit and 64-bit cases.
Based-on-patch-by: Qiaowei Ren <qiaowei.ren@intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Dave Hansen <dave@sr71.net>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20150607183705.E01F21E2@viggo.jf.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'ipc/ipc_sysctl.c')
0 files changed, 0 insertions, 0 deletions