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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [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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