Files
linux/drivers/acpi
Ben Hutchings e320749a32 ACPI / extlog: Check for RDMSR failure
commit 7cecb47f55 upstream.

extlog_init() uses rdmsrl() to read an MSR, which on older CPUs
provokes a error message at boot:

    unchecked MSR access error: RDMSR from 0x179 at rIP: 0xcd047307 (native_read_msr+0x7/0x40)

Use rdmsrl_safe() instead, and return -ENODEV if it fails.

Reported-by: jim@photojim.ca
References: https://bugs.debian.org/971058
Cc: All applicable <stable@vger.kernel.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-11-10 10:23:56 +01:00
..
2020-04-02 17:20:26 +02:00
2016-04-27 23:42:57 +02:00
2016-11-11 23:23:02 +01:00
2016-01-04 22:10:30 +01:00
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2019-12-21 10:42:05 +01:00
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