diff mbox series

[v4,12/15] x86/domctl: Add Hygon Dhyana support

Message ID d8357bf5ddf4cdbfbb47220c5f27c0effc138246.1553935727.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State Superseded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, 10:44 a.m. UTC 
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>
---
 xen/arch/x86/domctl.c | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/xen/arch/x86/domctl.c b/xen/arch/x86/domctl.c
index 9bf2d08..19b7bdd 100644
--- 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 +221,8 @@  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 ||
+                 boot_cpu_data.x86_vendor == X86_VENDOR_HYGON )
                 mask &= ((uint64_t)eax << 32) | ebx;
 
             d->arch.pv.cpuidmasks->_7ab0 = mask;
@@ -281,8 +283,12 @@  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 &&
+                 p->x86_vendor != X86_VENDOR_HYGON )
                 edx &= ~CPUID_COMMON_1D_FEATURES;
 
             switch ( boot_cpu_data.x86_vendor )
@@ -292,6 +298,7 @@  static int update_domain_cpuid_info(struct domain *d,
                 break;
 
             case X86_VENDOR_AMD:
+            case X86_VENDOR_HYGON:
                 mask &= ((uint64_t)ecx << 32) | edx;
 
                 /*