x86, mpx: Fixes for 3.19

Dave Hansen lkml 1 version Dec 22, 2014 In review

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#	Subject and files	Size	Replies	Applied
1/2	x86, mpx: explicitly disable 32-bit MPX support on 64-bit kernels`arch/x86/mm/mpx.c`	+6 -0	5 replies
2/2	x86 mpx: fix potential performance issue on unmaps`arch/x86/include/asm/mmu_context.h`	+19 -1	2 replies

1 of 2 patches has a Reviewed-by or Acked-by.

Patch	Andy Lutomirski
1/2	R-b
2/2

Trailers given in replies are filled; those carried in the patches from earlier versions are outlined with dashes.

Cover letter [PATCH 0/2] x86, mpx: Fixes for 3.19

Andi Lutomirski noticed that the current 3.19 code doesn't support 32-bit binaries on 64-bit kernels, but that it is not explicitly disabled.

I've also noticed a small performance regression that MPX was causing in some circumstances. The fix is simple.

 include/asm/mmu_context.h |   20 +++++++++++++++++++-
 mm/mpx.c                  |    6 ++++++
 2 files changed, 25 insertions(+), 1 deletion(-)