Re: [PATCH v9 2/4] x86, mce: Check for faults tagged in EXTABLE_CLASS_FAULT exception table entries

Extend the severity checking code to add a new context IN_KERN_RECOV which is used to indicate that the machine check was triggered by code in the kernel with a EXTABLE_CLASS_FAULT fixup entry. Major re-work to the tail code in do_machine_check() to make all this readable/maintainable. One functional change is that tolerant=3 no longer stops recovery actions. Revert to only skipping sending SIGBUS to the current process. Signed-off-by: Tony Luck <tony.luck(a)intel.com&gt; --- arch/x86/kernel/cpu/mcheck/mce-severity.c | 23 +++++++++- arch/x86/kernel/cpu/mcheck/mce.c | 71 ++++++++++++++++--------------- 2 files changed, 58 insertions(+), 36 deletions(-) diff --git a/arch/x86/kernel/cpu/mcheck/mce-severity.c b/arch/x86/kernel/cpu/mcheck/mce-severity.c index 9c682c222071..bca8b3936740 100644 --- a/arch/x86/kernel/cpu/mcheck/mce-severity.c +++ b/arch/x86/kernel/cpu/mcheck/mce-severity.c @@ -13,7 +13,9 @@ #include <linux/seq_file.h> #include <linux/init.h> #include <linux/debugfs.h> +#include <linux/module.h>