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[PATCH v3] x86/intel: insert Ice Lake-X (server) and Ice Lake-D model numbers



LBR, C-state MSRs should correspond to Ice Lake desktop according to
External Design Specification vol.2 for both models.

Ice Lake-X is known to expose IF_PSCHANGE_MC_NO in IA32_ARCH_CAPABILITIES MSR
(confirmed on Whitley SDP) which means the erratum is fixed in hardware for
that model and therefore it shouldn't be present in has_if_pschange_mc list.
Provisionally assume the same to be the case for Ice Lake-D.

Signed-off-by: Igor Druzhinin <igor.druzhinin@xxxxxxxxxx>
---
Changes in v3:
- Add Ice Lake-D model numbers
- Drop has_if_pschange_mc hunk following Tiger Lake related discussion -
  IF_PSCHANGE_MC_NO is confimed to be exposed on Whitley SDP

---
 xen/arch/x86/acpi/cpu_idle.c | 2 ++
 xen/arch/x86/hvm/vmx/vmx.c   | 2 +-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/xen/arch/x86/acpi/cpu_idle.c b/xen/arch/x86/acpi/cpu_idle.c
index c092086..d788c8b 100644
--- a/xen/arch/x86/acpi/cpu_idle.c
+++ b/xen/arch/x86/acpi/cpu_idle.c
@@ -181,6 +181,8 @@ static void do_get_hw_residencies(void *arg)
     case 0x55:
     case 0x5E:
     /* Ice Lake */
+    case 0x6A:
+    case 0x6C:
     case 0x7D:
     case 0x7E:
     /* Tiger Lake */
diff --git a/xen/arch/x86/hvm/vmx/vmx.c b/xen/arch/x86/hvm/vmx/vmx.c
index 2d4475e..bff5979 100644
--- a/xen/arch/x86/hvm/vmx/vmx.c
+++ b/xen/arch/x86/hvm/vmx/vmx.c
@@ -2775,7 +2775,7 @@ static const struct lbr_info *last_branch_msr_get(void)
         /* Goldmont Plus */
         case 0x7a:
         /* Ice Lake */
-        case 0x7d: case 0x7e:
+        case 0x6a: case 0x6c: case 0x7d: case 0x7e:
         /* Tiger Lake */
         case 0x8c: case 0x8d:
         /* Tremont */
-- 
2.7.4




 


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