[Xen-devel] [PATCH v4 07/15] x86/apic: Add Hygon Dhyana support

[Pu Wen <puwen@xxxxxxxx>]

Add Hygon Dhyana support to use modern APIC.

Signed-off-by: Pu Wen <puwen@xxxxxxxx>
Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
---
 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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