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authorH. Peter Anvin <hpa@linux.intel.com>2013-12-09 23:43:38 (GMT)
committerH. Peter Anvin <hpa@linux.intel.com>2013-12-09 23:52:39 (GMT)
commit8b3b005d675726e38bc504d2e35a991e55819155 (patch)
tree1141dafd5c7c9395329f5ae2ba8e676ea6e2df6f /arch/x86/Kbuild
parent374b105797c3d4f29c685f3be535c35f5689b30e (diff)
downloadlinux-8b3b005d675726e38bc504d2e35a991e55819155.tar.xz
x86, build: Pass in additional -mno-mmx, -mno-sse options
In checkin 5551a34e5aea x86-64, build: Always pass in -mno-sse we unconditionally added -mno-sse to the main build, to keep newer compilers from generating SSE instructions from autovectorization. However, this did not extend to the special environments (arch/x86/boot, arch/x86/boot/compressed, and arch/x86/realmode/rm). Add -mno-sse to the compiler command line for these environments, and add -mno-mmx to all the environments as well, as we don't want a compiler to generate MMX code either. This patch also removes a $(cc-option) call for -m32, since we have long since stopped supporting compilers too old for the -m32 option, and in fact hardcode it in other places in the Makefiles. Reported-by: Kevin B. Smith <kevin.b.smith@intel.com> Cc: Sunil K. Pandey <sunil.k.pandey@intel.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> Cc: H. J. Lu <hjl.tools@gmail.com> Link: http://lkml.kernel.org/n/tip-j21wzqv790q834n7yc6g80j1@git.kernel.org Cc: <stable@vger.kernel.org> # build fix only
Diffstat (limited to 'arch/x86/Kbuild')
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