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The Intel Software Developer Manual describes bit 24 in the MCG_CAP MSR: MCG_SER_P (software error recovery support present) flag, bit 24 — Indicates (when set) that the processor supports software error recovery But only some models with this capability bit set will actually generate recoverable machine checks. Check the model name and set a synthetic capability bit. Provide a command line option to set this bit anyway in case the kernel doesn't recognise the model name. Signed-off-by: Tony Luck <tony.luck@intel.com> Reviewed-by: Borislav Petkov <bp@suse.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/2e5bfb23c89800a036fb8a45fa97a74bb16bc362.1455732970.git.tony.luck@intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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