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Tony Luck authored
Returning a 'bool' was very unpopular. Doubly so because the code was just wrong (returning zero for true, one for false; great for shell programming, not so good for C). Change return type to "int". Keep zero as the success indicator because it matches other similar code and people may be more comfortable writing: if (memcpy_mcsafe(to, from, count)) { printk("Sad panda, copy failed\n"); ... } Make the failure return value -EFAULT for now. Reported by: Mika Penttilä <mika.penttila@nextfour.com> Signed-off-by:
Tony Luck <tony.luck@intel.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: mika.penttila@nextfour.com Fixes: 92b0729c ("x86/mm, x86/mce: Add memcpy_mcsafe()") Link: http://lkml.kernel.org/r/695f14233fa7a54fcac4406c706d7fec228e3f4c.1457993040.git.tony.luck@intel.comSigned-off-by:
Ingo Molnar <mingo@kernel.org>
cbf8b5a2