[PATCH 4.18 187/350] cpupower: Fix AMD Family 0x17 msr_pstate size

Greg Kroah-Hartman
2018-11-11T23:28:15Z

From: Prarit Bhargava <prarit@redhat.com>

[ Upstream commit 8c22e2f695920ebd94f9a53bcf2a65eb36d4dba1 ]

The msr_pstate data is only 63 bits long and should be 64 bits.

Add in the missing bit from res1 for AMD Family 0x17.

Reference: https://www.amd.com/system/files/TechDocs/54945_PPR_Family_17h_Models_00h-0Fh.pdf, page 138.

Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Stafford Horne <shorne@gmail.com>
Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
tools/power/cpupower/utils/helpers/amd.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/tools/power/cpupower/utils/helpers/amd.c
+++ b/tools/power/cpupower/utils/helpers/amd.c
@@ -33,7 +33,7 @@ union msr_pstate {
unsigned vid:8;
unsigned iddval:8;
unsigned idddiv:2;
- unsigned res1:30;
+ unsigned res1:31;
unsigned en:1;
} fam17h_bits;
unsigned long long val;