On 10/10/2012 07:50 PM, Borislav Petkov wrote:
From: Borislav Petkov <borislav.pet...@amd.com>

Not-Signed-off-by: Borislav Petkov <borislav.pet...@amd.com>
---
  arch/x86/include/asm/mce.h       |  9 +++++----
  arch/x86/kernel/cpu/mcheck/mce.c | 12 +++++-------
  arch/x86/lguest/boot.c           |  2 +-
  3 files changed, 11 insertions(+), 12 deletions(-)

diff --git a/arch/x86/include/asm/mce.h b/arch/x86/include/asm/mce.h
index 18a66ac35fc5..e8ed5a3a0512 100644
--- a/arch/x86/include/asm/mce.h
+++ b/arch/x86/include/asm/mce.h
@@ -126,7 +126,6 @@ extern void mce_unregister_decode_chain(struct 
notifier_block *nb);
  #include <linux/init.h>
  #include <linux/atomic.h>

-extern int mce_disabled;
  extern int mce_p5_enabled;

  #ifdef CONFIG_X86_MCE
@@ -208,9 +207,11 @@ extern void register_mce_write_callback(ssize_t (*)(struct 
file *filp,
                                    size_t usize, loff_t *off));

  struct mca_config {
-       u64 dont_log_ce : 1,
-#define MCA_CFG_DONT_LOG_CE    0
-           __resv1     : 63;
+       u64     dont_log_ce     : 1,
+#define MCA_CFG_DONT_LOG_CE      0
+               mca_disabled    : 1,
+#define MCA_CFG_MCA_DISABLED     1
+           __resv1     : 62;
  };

Hi Boris,
Thanks for getting to this before I could!

I had a look but I still feel boolean is a better way to go. With bool, we can get rid of the #defines above and more importantly, the aux field in dev_ext_attribute since that is used in other places too. Further, I suspect we'll still end up using the same or less memory since we don't have that many boolean members within the MCA code.

Regards,
Naveen

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