diff mbox series

[v5,14/15] x86/cpuid: Add Hygon Dhyana support

Message ID c499ff15b23641b64eb120a0990b3c57ea5a6a5a.1554382869.git.puwen@hygon.cn (mailing list archive)
State New, archived
Headers show
Series Add support for Hygon Dhyana Family 18h processor | expand

Commit Message

Pu Wen April 4, 2019, 1:48 p.m. UTC 
The Hygon Dhyana family 18h processor shares the same cpuid leaves as
the AMD family 17h one. So add Hygon Dhyana support to caculate the
cpuid policies as the AMD CPU does.

Signed-off-by: Pu Wen <puwen@hygon.cn>
Acked-by: Jan Beulich <jbeulich@suse.com>
---
 xen/arch/x86/cpuid.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/xen/arch/x86/cpuid.c b/xen/arch/x86/cpuid.c
index cb170ac..a3fb770 100644
--- a/xen/arch/x86/cpuid.c
+++ b/xen/arch/x86/cpuid.c
@@ -240,6 +240,7 @@  static void recalculate_misc(struct cpuid_policy *p)
         break;
 
     case X86_VENDOR_AMD:
+    case X86_VENDOR_HYGON:
         zero_leaves(p->basic.raw, 0x2, 0x3);
         memset(p->cache.raw, 0, sizeof(p->cache.raw));
         zero_leaves(p->basic.raw, 0x9, 0xa);
@@ -391,7 +392,8 @@  static void __init calculate_hvm_max_policy(void)
      * long mode (and init_amd() has cleared it out of host capabilities), but
      * HVM guests are able if running in protected mode.
      */
-    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) &&
          raw_cpuid_policy.basic.sep )
         __set_bit(X86_FEATURE_SEP, hvm_featureset);
 
@@ -466,7 +468,8 @@  void recalculate_cpuid_policy(struct domain *d)
     p->basic.max_leaf   = min(p->basic.max_leaf,   max->basic.max_leaf);
     p->feat.max_subleaf = min(p->feat.max_subleaf, max->feat.max_subleaf);
     p->extd.max_leaf    = 0x80000000 | min(p->extd.max_leaf & 0xffff,
-                                           (p->x86_vendor == X86_VENDOR_AMD
+                                          ((p->x86_vendor == X86_VENDOR_AMD ||
+                                            p->x86_vendor == X86_VENDOR_HYGON)
                                             ? CPUID_GUEST_NR_EXTD_AMD
                                             : CPUID_GUEST_NR_EXTD_INTEL) - 1);
 
@@ -508,7 +511,8 @@  void recalculate_cpuid_policy(struct domain *d)
     if ( is_pv_32bit_domain(d) )
     {
         __clear_bit(X86_FEATURE_LM, max_fs);
-        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 )
             __clear_bit(X86_FEATURE_SYSCALL, max_fs);
     }