x86, build: Build 16-bit code with -m16 where possible

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Both clang 3.5 and GCC 4.9 will support this (as of r199754 and r207196
respectively). Both have been tested to produce booting kernels when the
16-bit code is built with -m16. (Modulo LLVM PR3997, at least.)

[ hpa: folded test for -m16 into M16_CFLAGS ]

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Link: http://lkml.kernel.org/r/1390997807.20153.133.camel@i7.infradead.org
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

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David Woodhouse 2014-01-29 12:16:47 +00:00 • committed by H. Peter Anvin

parent 5fbbc25a99

commit de3accdaec

1 changed files with 12 additions and 4 deletions

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arch/x86/Makefile

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