path: root/Documentation/mic/mic_overview.txt
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authorAshutosh Dixit <ashutosh.dixit@intel.com>2013-11-27 08:58:41 -0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-11-27 11:03:38 -0800
commit1e31aa9270daab40c7aef9d5488982e3475b87ef (patch)
treeb1c30376de230c4b21965622c5fc4e2705188ac5 /Documentation/mic/mic_overview.txt
parent286c24028c7f2df637323e672d9aa54a07b67bde (diff)
misc: mic: Fix user space namespace pollution from mic_common.h.
Avoid declaring ALIGN() and __aligned() in include/uapi/linux/mic_common.h since they pollute user space namespace. Also, mic_aligned_size() can be simply replaced simply by sizeof() since all structures where mic_aligned_size() is used are declared using __attribute__ ((aligned(8))); -- >From mail from H Peter Anvin about this: On Fri, Nov 08, 2013 H Peter Anvin <h.peter.anvin@intel.com> wrote: Subject: Namespace pollution in mic_common.h This puts two macros, ALIGN() and __aligned(), into arbitrary user space namespace. This really isn't safe or acceptable, especially since those symbols are highly generic. ... When these structures are forced-aligned, they will in fact have padding automatically added by the compiler to an 8-byte boundary anyway, so mic_aligned_size() does nothing. ... Reported-by: H Peter Anvin <h.peter.anvin@intel.com> Reviewed-by: Sudeep Dutt <sudeep.dutt@intel.com> Signed-off-by: Nikhil Rao <nikhil.rao@intel.com> Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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