e754aedc26
I've had this code for a while, but never submitted it upstream. Now that Skylake hardware is out in the wild, folks can actually run this for real. It tests the following: 1. The MPX hardware is enabled by the kernel and doing what it is supposed to 2. The MPX management code is present and enabled in the kernel 3. MPX Signal handling 4. The MPX bounds table population code (on-demand population) 5. The MPX bounds table unmapping code (kernel-initiated freeing when unused) This has also caught bugs in the XSAVE code because MPX state is saved/restored with XSAVE. I'm submitting it now because it would have caught the recent issues with the compat_siginfo code not being properly augmented when new siginfo state is added. Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Dave Hansen <dave@sr71.net> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Shuah Khan <shuahkh@osg.samsung.com> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20160608172535.5B40B0EE@viggo.jf.intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
15 lines
457 B
C
15 lines
457 B
C
#ifndef _MPX_DEBUG_H
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#define _MPX_DEBUG_H
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#ifndef DEBUG_LEVEL
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#define DEBUG_LEVEL 0
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#endif
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#define dprintf_level(level, args...) do { if(level <= DEBUG_LEVEL) printf(args); } while(0)
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#define dprintf1(args...) dprintf_level(1, args)
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#define dprintf2(args...) dprintf_level(2, args)
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#define dprintf3(args...) dprintf_level(3, args)
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#define dprintf4(args...) dprintf_level(4, args)
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#define dprintf5(args...) dprintf_level(5, args)
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#endif /* _MPX_DEBUG_H */
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