ACPI: Add fixups for AMD P-state figures

Some AMD systems may round the frequencies in ACPI tables to 100MHz
boundaries. We can obtain the real frequencies from MSRs, so add a quirk
to fix these frequencies up on AMD systems.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Andre Przywara <andre.przywara@amd.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>

1 files changed, 1 insertions, 0 deletions

diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h
index 1e1f3eb58638..fbee9714d9ab 100644
--- a/arch/x86/include/asm/msr-index.h
+++ b/arch/x86/include/asm/msr-index.h
@@ -248,6 +248,7 @@
 
 #define MSR_IA32_PERF_STATUS            0x00000198
 #define MSR_IA32_PERF_CTL               0x00000199
+#define MSR_AMD_PSTATE_DEF_BASE         0xc0010064
 #define MSR_AMD_PERF_STATUS             0xc0010063
 #define MSR_AMD_PERF_CTL                0xc0010062