From 2f5cc64b00401c593ccc6c5ba90aa3f19de01c94 Mon Sep 17 00:00:00 2001 From: Pu Wen Date: Thu, 4 Apr 2019 21:46:42 +0800 Subject: [PATCH] x86/apic: Add Hygon Dhyana support Add Hygon Dhyana support to use modern APIC. Signed-off-by: Pu Wen Acked-by: Jan Beulich --- 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 fafc0bdcde..9c3c998d34 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; -- 2.30.2