target-i386: Set level=4 on Conroe/Penryn/Nehalem

The CPUID level value on Conroe, Penryn, and Nehalem are too low. This causes at least one known problem: the -smp "threads" option doesn't work as expect if level is < 4, because thread count information is provided to the guest on CPUID[EAX=4,ECX=2].EAX Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Reviewed-by: Igor Mammedov <imammedo@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
qemu · Jun 10, 2013 · 6b11322 · 6b11322
1 parent ffce9eb
commit 6b11322
Show file tree

Hide file tree

Showing 2 changed files with 15 additions and 3 deletions.
diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
@@ -190,14 +190,26 @@ int e820_add_entry(uint64_t, uint64_t, uint32_t);
             .driver   = "Conroe-" TYPE_X86_CPU,\
             .property = "model",\
             .value    = stringify(2),\
+        },{\
+            .driver   = "Conroe-" TYPE_X86_CPU,\
+            .property = "level",\
+            .value    = stringify(2),\
         },{\
             .driver   = "Penryn-" TYPE_X86_CPU,\
             .property = "model",\
             .value    = stringify(2),\
+        },{\
+            .driver   = "Penryn-" TYPE_X86_CPU,\
+            .property = "level",\
+            .value    = stringify(2),\
         },{\
             .driver   = "Nehalem-" TYPE_X86_CPU,\
             .property = "model",\
             .value    = stringify(2),\
+        },{\
+            .driver   = "Nehalem-" TYPE_X86_CPU,\
+            .property = "level",\
+            .value    = stringify(2),\
         }
 
 #define PC_COMPAT_1_4 \

diff --git a/target-i386/cpu.c b/target-i386/cpu.c
@@ -669,7 +669,7 @@ static x86_def_t builtin_x86_defs[] = {
     },
     {
         .name = "Conroe",
-        .level = 2,
+        .level = 4,
         .vendor = CPUID_VENDOR_INTEL,
         .family = 6,
         .model = 15,
@@ -691,7 +691,7 @@ static x86_def_t builtin_x86_defs[] = {
     },
     {
         .name = "Penryn",
-        .level = 2,
+        .level = 4,
         .vendor = CPUID_VENDOR_INTEL,
         .family = 6,
         .model = 23,
@@ -714,7 +714,7 @@ static x86_def_t builtin_x86_defs[] = {
     },
     {
         .name = "Nehalem",
-        .level = 2,
+        .level = 4,
         .vendor = CPUID_VENDOR_INTEL,
         .family = 6,
         .model = 26,