Add Hygon Dhyana support to use modern APIC.
Signed-off-by: Pu Wen <[email protected]>
---
xen/arch/x86/apic.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/xen/arch/x86/apic.c b/xen/arch/x86/apic.c
index 2a24326..004d685 100644
--- a/xen/arch/x86/apic.c
+++ b/xen/arch/x86/apic.c
@@ -92,6 +92,11 @@ static int modern_apic(void)
if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD &&
boot_cpu_data.x86 >= 0xf)
return 1;
+
+ /* Hygon systems use modern APIC */
+ if (boot_cpu_data.x86_vendor == X86_VENDOR_HYGON)
+ return 1;
+
lvr = apic_read(APIC_LVR);
version = GET_APIC_VERSION(lvr);
return version >= 0x14;
--
2.7.4
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