Skip to content
Commit d898b9b0 authored by Srinivas Pandruvada's avatar Srinivas Pandruvada Committed by Yongxin Liu
Browse files

platform/x86: ISST: Add support for MSR 0x54



commit e6d34181 upstream.

To map Linux CPU numbering scheme to hardware CPU numbering scheme
MSR 0x53 is getting used. But for new generation of CPUs, this MSR
is not valid. Since this is model specific MSR, this is possible.

A new MSR 0x54 is defined for this purpose. User space can use the
API version to distinguish format from MSR 0x53.

Intel speed select utility is updated to use the new format based
on the API version.

Signed-off-by: default avatarSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Reviewed-by: default avatarZhang Rui <rui.zhang@intel.com>
Tested-by: default avatarPragya Tanwar <pragya.tanwar@intel.com>
Link: https://lore.kernel.org/r/20230308070642.1727167-2-srinivas.pandruvada@linux.intel.com


Reviewed-by: default avatarHans de Goede <hdegoede@redhat.com>
Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
Signed-off-by: default avatarYongxin Liu <yongxin.liu@windriver.com>
parent f4068b00
Loading
Loading
Loading
Loading
0% Loading or .
You are about to add 0 people to the discussion. Proceed with caution.
Please register or to comment