[Xen-changelog] [xen staging] x86/apic: Add Hygon Dhyana support

[patchbot@xxxxxxx]

commit 2f5cc64b00401c593ccc6c5ba90aa3f19de01c94
Author:     Pu Wen <puwen@xxxxxxxx>
AuthorDate: Thu Apr 4 21:46:42 2019 +0800
Commit:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CommitDate: Thu Jun 6 15:28:21 2019 +0100

    x86/apic: Add Hygon Dhyana support
    
    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 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;
--
generated by git-patchbot for /home/xen/git/xen.git#staging

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