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| author | Dave Hansen <[email protected]> | 2015-06-07 18:37:05 +0000 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2015-06-09 10:24:34 +0000 |
| commit | 613fcb7d3c79ec25b5913a6aa974c9047c31e68c (patch) | |
| tree | cf4b979e9bf8a951a63eb71ddcd536508148e05e /lib/mpi/mpicoder.c | |
| parent | x86/mpx: Use 32-bit-only cmpxchg() for 32-bit apps (diff) | |
| download | kernel-613fcb7d3c79ec25b5913a6aa974c9047c31e68c.tar.gz kernel-613fcb7d3c79ec25b5913a6aa974c9047c31e68c.zip | |
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 <[email protected]>
Signed-off-by: Dave Hansen <[email protected]>
Reviewed-by: Thomas Gleixner <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: H. Peter Anvin <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
Diffstat (limited to 'lib/mpi/mpicoder.c')
0 files changed, 0 insertions, 0 deletions