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authorIngo Molnar <mingo@kernel.org>2017-01-28 17:01:06 +0100
committerIngo Molnar <mingo@kernel.org>2017-01-28 17:02:56 +0100
commit09c5151339caea3a5752e577c66521f6e7443fe5 (patch)
treeffbd7517061d05a479f546e7a1cfb5c612527a5f /arch/x86/kernel/e820.c
parent7ad1ed8abc50eb44dd628bda23313599503aee87 (diff)
downloadlinux-09c5151339caea3a5752e577c66521f6e7443fe5.tar.bz2
x86/boot/e820: Use 'enum e820_type' in 'struct e820_entry'
Use a stricter type for struct e820_entry. Add a build-time check to make sure the compiler won't ever pack the enum into a field smaller than 'int'. No change in functionality. Cc: Alex Thorlton <athorlton@sgi.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Huang, Ying <ying.huang@intel.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Juergen Gross <jgross@suse.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul Jackson <pj@sgi.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rafael J. Wysocki <rjw@sisk.pl> Cc: Tejun Heo <tj@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Wei Yang <richard.weiyang@gmail.com> Cc: Yinghai Lu <yinghai@kernel.org> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/kernel/e820.c')
-rw-r--r--arch/x86/kernel/e820.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index 511402d88795..010a289ddd9f 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -1164,6 +1164,9 @@ void __init e820__memory_setup(void)
{
char *who;
+ /* This is a firmware interface ABI - make sure we don't break it: */
+ BUILD_BUG_ON(sizeof(struct e820_entry) != 20);
+
who = x86_init.resources.memory_setup();
memcpy(e820_table_firmware, e820_table, sizeof(struct e820_table));