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1e03bff360
Processors which have self-snooping capability can handle conflicting memory type across CPUs by snooping its own cache. However, there exists CPU models in which having conflicting memory types still leads to unpredictable behavior, machine check errors, or hangs. Clear this feature on affected CPUs to prevent its use. Suggested-by: Alan Cox <alan.cox@intel.com> Signed-off-by: Ricardo Neri <ricardo.neri-calderon@linux.intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Borislav Petkov <bp@suse.de> Cc: Tony Luck <tony.luck@intel.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Andi Kleen <andi.kleen@intel.com> Cc: Hans de Goede <hdegoede@redhat.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jordan Borgner <mail@jordan-borgner.de> Cc: "Ravi V. Shankar" <ravi.v.shankar@intel.com> Cc: Mohammad Etemadi <mohammad.etemadi@intel.com> Cc: Ricardo Neri <ricardo.neri@intel.com> Cc: Andy Shevchenko <andriy.shevchenko@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Peter Feiner <pfeiner@google.com> Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com> Link: https://lkml.kernel.org/r/1561689337-19390-2-git-send-email-ricardo.neri-calderon@linux.intel.com |
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