From: Pu Wen <puwen@hygon.cn>
Date: Thu, 4 Apr 2019 13:46:42 +0000 (+0800)
Subject: x86/apic: Add Hygon Dhyana support
X-Git-Tag: archive/raspbian/4.14.0+80-gd101b417b7-1+rpi1^2~63^2~2107
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=2f5cc64b00401c593ccc6c5ba90aa3f19de01c94;p=xen.git

x86/apic: Add Hygon Dhyana support

Add Hygon Dhyana support to use modern APIC.

Signed-off-by: Pu Wen <puwen@hygon.cn>
Acked-by: Jan Beulich <jbeulich@suse.com>
---

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;