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There are CPUs which have errata causing RDMSR of a nonexistent MSR to not fault. We would then try to WRMSR to restore the value of that MSR, causing a crash. Specifically, some Pentium M variants would have this problem trying to save and restore the non-existent EFER, causing a crash on resume. Work around this by making sure we can write back the result at suspend time. Huge thanks to Christian Sünkenberg for finding the offending erratum that finally deciphered the mystery. Reported-and-tested-by: Johan Heinrich <onny@project-insanity.org> Debugged-by: Christian Sünkenberg <christian.suenkenberg@student.kit.edu> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Link: http://lkml.kernel.org/r/51DDC972.3010005@student.kit.edu Cc: <stable@vger.kernel.org> # v3.7+ |
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| Makefile_32.cpu | ||
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