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[v4,07/15] x86/apic: Add Hygon Dhyana support

Message ID 491f86bdc0cb877d42fe611c87e89916a71c157f.1553935727.git.puwen@hygon.cn (mailing list archive)
State Superseded
Headers show
Series Add support for Hygon Dhyana Family 18h processor | expand

Commit Message

Pu Wen March 30, 2019, 10:43 a.m. UTC 
Add Hygon Dhyana support to use modern APIC.

Signed-off-by: Pu Wen <puwen@hygon.cn>
Acked-by: Jan Beulich <jbeulich@suse.com>
---
 xen/arch/x86/apic.c | 5 +++++
 1 file changed, 5 insertions(+)
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Patch

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;