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Message-ID: <20080726095901.4a06daf9@infradead.org> Date: Sat, 26 Jul 2008 09:59:01 -0700 From: Arjan van de Ven <arjan@...radead.org> To: "H. Peter Anvin" <hpa@...or.com> Cc: Harvey Harrison <harvey.harrison@...il.com>, Olaf Hering <olaf@...fle.de>, Andrew Morton <akpm@...ux-foundation.org>, Ingo Molnar <mingo@...e.hu>, LKML <linux-kernel@...r.kernel.org> Subject: Re: asm-x86/byteorder.h, CONFIG_X86_BSWAP leaks to userland On Sat, 26 Jul 2008 12:48:31 -0400 "H. Peter Anvin" <hpa@...or.com> w > > I'm not sure if it's time yet to make the bswap ones be exported, > > as they would no longer be usable for those early machines. X86 > > guys CC:d. > > On i386 we still default to i386-compatible binaries; I *think* gcc > has macros telling you if the user has used -march=i486 etc. It is also not the kernels job to provide this sort of functionality to userspace programs. At all. This is gcc/glibc/etc's job. Rule of thumb: the kernel does not provide code for compiling inside userspace programs. (As opposed to providing datastructures that userspace programs can use to talk to the kernel). -- If you want to reach me at my work email, use arjan@...ux.intel.com For development, discussion and tips for power savings, visit http://www.lesswatts.org -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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