[Xen-devel] [PATCH v2 09/14] x86/cpuid: Handle leaf 0x80000009 in guest_cpuid()

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

Leaf 0x80000009 is reserved.

Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
---
CC: Jan Beulich <JBeulich@xxxxxxxx>

v2:
 * New
---
 xen/arch/x86/cpuid.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/xen/arch/x86/cpuid.c b/xen/arch/x86/cpuid.c
index 4d48552..a8dce40 100644
--- a/xen/arch/x86/cpuid.c
+++ b/xen/arch/x86/cpuid.c
@@ -206,6 +206,8 @@ static void recalculate_misc(struct cpuid_policy *p)
 
         p->extd.raw[0x8].a &= 0x00ffffff;
         p->extd.raw[0x8].c &= 0x0003f0ff;
+
+        p->extd.raw[0x9] = EMPTY_LEAF;
         break;
     }
 }
@@ -712,7 +714,7 @@ static void pv_cpuid(uint32_t leaf, uint32_t subleaf, 
struct cpuid_leaf *res)
     case 0x2 ... 0x3:
     case 0x7 ... 0x9:
     case 0xc ... XSTATE_CPUID:
-    case 0x80000000 ... 0x80000008:
+    case 0x80000000 ... 0x80000009:
         ASSERT_UNREACHABLE();
         /* Now handled in guest_cpuid(). */
     }
@@ -808,7 +810,7 @@ static void hvm_cpuid(uint32_t leaf, uint32_t subleaf, 
struct cpuid_leaf *res)
     case 0x2 ... 0x3:
     case 0x7 ... 0x9:
     case 0xc ... XSTATE_CPUID:
-    case 0x80000000 ... 0x80000008:
+    case 0x80000000 ... 0x80000009:
         ASSERT_UNREACHABLE();
         /* Now handled in guest_cpuid(). */
     }
@@ -891,7 +893,7 @@ void guest_cpuid(const struct vcpu *v, uint32_t leaf,
         default:
             goto legacy;
 
-        case 0x80000000 ... 0x80000008:
+        case 0x80000000 ... 0x80000009:
             *res = p->extd.raw[leaf & 0xffff];
             break;
         }
-- 
2.1.4


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