[1/2] cpupower: Fix AMD Family 0x17 msr_pstate size
diff mbox series

Message ID 20181008150619.22531-2-prarit@redhat.com
State Accepted
Delegated to: Shuah Khan
Headers show
  • cpupower: Fix AMD Family 0x17 crash on VMWare guests
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Commit Message

Prarit Bhargava Oct. 8, 2018, 3:06 p.m. UTC
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>
 tools/power/cpupower/utils/helpers/amd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

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diff --git a/tools/power/cpupower/utils/helpers/amd.c b/tools/power/cpupower/utils/helpers/amd.c
index bb41cdd0df6b..eed31b27909b 100644
--- 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;