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authorDave Hansen <dave.hansen@linux.intel.com>2017-11-11 01:12:29 +0100
committerIngo Molnar <mingo@kernel.org>2017-11-21 09:34:52 +0100
commita6400120d042397675fcf694060779d21e9e762d (patch)
tree4f78f6bb0ad19e731111c551be6b00c0d3dc401c /tools/testing
parentx86/pkeys: Update documentation about availability (diff)
downloadlinux-a6400120d042397675fcf694060779d21e9e762d.tar.xz
linux-a6400120d042397675fcf694060779d21e9e762d.zip
x86/mpx/selftests: Fix up weird arrays
The MPX hardware data structurse are defined in a weird way: they define their size in bytes and then union that with the type with which we want to access them. Yes, this is weird, but it does work. But, new GCC's complain that we are accessing the array out of bounds. Just make it a zero-sized array so gcc will stop complaining. There was not really a bug here. Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20171111001229.58A7933D@viggo.jf.intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'tools/testing')
-rw-r--r--tools/testing/selftests/x86/mpx-hw.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/tools/testing/selftests/x86/mpx-hw.h b/tools/testing/selftests/x86/mpx-hw.h
index 3f0093911f03..d1b61ab870f8 100644
--- a/tools/testing/selftests/x86/mpx-hw.h
+++ b/tools/testing/selftests/x86/mpx-hw.h
@@ -52,14 +52,14 @@
struct mpx_bd_entry {
union {
char x[MPX_BOUNDS_DIR_ENTRY_SIZE_BYTES];
- void *contents[1];
+ void *contents[0];
};
} __attribute__((packed));
struct mpx_bt_entry {
union {
char x[MPX_BOUNDS_TABLE_ENTRY_SIZE_BYTES];
- unsigned long contents[1];
+ unsigned long contents[0];
};
} __attribute__((packed));