[RFC PATCH 2/4] i386: Extract a common fucntion to setup value of MSR_CORE_THREAD_COUNT

[Xiaoyao Li]

There are duplicated code to setup the value of MSR_CORE_THREAD_COUNT.
Extract a common function for it.

Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
---
 target/i386/cpu.h                    | 11 +++++++++++
 target/i386/hvf/x86_emu.c            |  3 +--
 target/i386/kvm/kvm.c                |  5 +----
 target/i386/tcg/sysemu/misc_helper.c |  3 +--
 4 files changed, 14 insertions(+), 8 deletions(-)

diff --git a/target/i386/cpu.h b/target/i386/cpu.h
index 4c239a6970fd..5795a497e567 100644
--- a/target/i386/cpu.h
+++ b/target/i386/cpu.h
@@ -2390,6 +2390,17 @@ static inline void cpu_x86_load_seg_cache_sipi(X86CPU 
*cpu,
     cs->halted = 0;
 }
 
+static inline uint64_t cpu_x86_get_msr_core_thread_count(X86CPU *cpu)
+{
+    CPUState *cs = CPU(cpu);
+    uint64_t val;
+
+    val = cs->nr_threads * cs->nr_cores;  /* thread count, bits 15..0 */
+    val |= ((uint32_t)cs->nr_cores << 16); /* core count, bits 31..16 */
+
+    return val;
+}
+
 int cpu_x86_get_descr_debug(CPUX86State *env, unsigned int selector,
                             target_ulong *base, unsigned int *limit,
                             unsigned int *flags);
diff --git a/target/i386/hvf/x86_emu.c b/target/i386/hvf/x86_emu.c
index 015f760acb39..69c61c9c0737 100644
--- a/target/i386/hvf/x86_emu.c
+++ b/target/i386/hvf/x86_emu.c
@@ -765,8 +765,7 @@ void simulate_rdmsr(CPUX86State *env)
         val = env->mtrr_deftype;
         break;
     case MSR_CORE_THREAD_COUNT:
-        val = cs->nr_threads * cs->nr_cores;  /* thread count, bits 15..0 */
-        val |= ((uint32_t)cs->nr_cores << 16); /* core count, bits 31..16 */
+        val = cpu_x86_get_msr_core_thread_count(cpu);
         break;
     default:
         /* fprintf(stderr, "%s: unknown msr 0x%x\n", __func__, msr); */
diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c
index 8e17942c3ba1..18a1bd1297a4 100644
--- a/target/i386/kvm/kvm.c
+++ b/target/i386/kvm/kvm.c
@@ -2602,10 +2602,7 @@ static bool kvm_rdmsr_core_thread_count(X86CPU *cpu,
                                         uint32_t msr,
                                         uint64_t *val)
 {
-    CPUState *cs = CPU(cpu);
-
-    *val = cs->nr_threads * cs->nr_cores; /* thread count, bits 15..0 */
-    *val |= ((uint32_t)cs->nr_cores << 16); /* core count, bits 31..16 */
+    *val = cpu_x86_get_msr_core_thread_count(cpu);
 
     return true;
 }
diff --git a/target/i386/tcg/sysemu/misc_helper.c 
b/target/i386/tcg/sysemu/misc_helper.c
index 094aa56a20d1..ff7b201b44d8 100644
--- a/target/i386/tcg/sysemu/misc_helper.c
+++ b/target/i386/tcg/sysemu/misc_helper.c
@@ -468,8 +468,7 @@ void helper_rdmsr(CPUX86State *env)
         val = x86_cpu->ucode_rev;
         break;
     case MSR_CORE_THREAD_COUNT: {
-        CPUState *cs = CPU(x86_cpu);
-        val = (cs->nr_threads * cs->nr_cores) | (cs->nr_cores << 16);
+        val = cpu_x86_get_msr_core_thread_count(x86_cpu);
         break;
     }
     case MSR_APIC_START ... MSR_APIC_END: {
-- 
2.34.1