x86/domctl: Add Hygon Dhyana support

Add Hygon Dhyana support to update cpuid info for creating PV guest.

Signed-off-by: Pu Wen <puwen@hygon.cn>
Acked-by: Jan Beulich <jbeulich@suse.com>
[Rebase over 0cd074144cb "x86/cpu: Renumber X86_VENDOR_* to form a bitmap"]
Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>

diff --git a/xen/arch/x86/domctl.c b/xen/arch/x86/domctl.c
index 7c6b8093d292697325799d7950db179d641b992a..c82779020281808dd6c1dfe66b085305dc6e791e 100644 (file)
--- a/xen/arch/x86/domctl.c
+++ b/xen/arch/x86/domctl.c
@@ -176,6 +176,7 @@ static int update_domain_cpuid_info(struct domain *d,
                 break;
 
             case X86_VENDOR_AMD:
+            case X86_VENDOR_HYGON:
                 mask &= ((uint64_t)ecx << 32) | edx;
 
                 /*
@@ -220,7 +221,7 @@ static int update_domain_cpuid_info(struct domain *d,
             uint32_t eax = ctl->eax;
             uint32_t ebx = p->feat._7b0;
 
-            if ( boot_cpu_data.x86_vendor == X86_VENDOR_AMD )
+            if ( boot_cpu_data.x86_vendor & (X86_VENDOR_AMD | X86_VENDOR_HYGON) )
                 mask &= ((uint64_t)eax << 32) | ebx;
 
             d->arch.pv.cpuidmasks->_7ab0 = mask;
@@ -281,8 +282,11 @@ static int update_domain_cpuid_info(struct domain *d,
             if ( cpu_has_cmp_legacy )
                 ecx |= cpufeat_mask(X86_FEATURE_CMP_LEGACY);
 
-            /* If not emulating AMD, clear the duplicated features in e1d. */
-            if ( p->x86_vendor != X86_VENDOR_AMD )
+            /*
+             * If not emulating AMD or Hygon, clear the duplicated features
+             * in e1d.
+             */
+            if ( !(p->x86_vendor & (X86_VENDOR_AMD | X86_VENDOR_HYGON)) )
                 edx &= ~CPUID_COMMON_1D_FEATURES;
 
             switch ( boot_cpu_data.x86_vendor )
@@ -292,6 +296,7 @@ static int update_domain_cpuid_info(struct domain *d,
                 break;
 
             case X86_VENDOR_AMD:
+            case X86_VENDOR_HYGON:
                 mask &= ((uint64_t)ecx << 32) | edx;
 
                 /*