Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 cpu updates from Ingo Molnar:
 "The main changes in this cycle were:

   - Improved CPU ID handling code and related enhancements (Borislav
     Petkov)

   - RDRAND fix (Len Brown)"

* 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86: Replace RDRAND forced-reseed with simple sanity check
  x86/MSR: Chop off lower 32-bit value
  x86/cpu: Fix MSR value truncation issue
  x86/cpu/amd, kvm: Satisfy guest kernel reads of IC_CFG MSR
  kvm: Add accessors for guest CPU's family, model, stepping
  x86/cpu: Unify CPU family, model, stepping calculation

1 files changed, 7 insertions, 32 deletions

diff --git a/arch/x86/include/asm/microcode.h b/arch/x86/include/asm/microcode.h
index 34e62b1dcfce..1e1b07a5a738 100644
--- a/arch/x86/include/asm/microcode.h
+++ b/arch/x86/include/asm/microcode.h
@@ -1,6 +1,7 @@
 #ifndef _ASM_X86_MICROCODE_H
 #define _ASM_X86_MICROCODE_H
 
+#include <asm/cpu.h>
 #include <linux/earlycpio.h>
 
 #define native_rdmsr(msr, val1, val2)			\
@@ -95,14 +96,14 @@ static inline void __exit exit_amd_microcode(void) {}
 
 /*
  * In early loading microcode phase on BSP, boot_cpu_data is not set up yet.
- * x86_vendor() gets vendor id for BSP.
+ * x86_cpuid_vendor() gets vendor id for BSP.
  *
  * In 32 bit AP case, accessing boot_cpu_data needs linear address. To simplify
- * coding, we still use x86_vendor() to get vendor id for AP.
+ * coding, we still use x86_cpuid_vendor() to get vendor id for AP.
  *
- * x86_vendor() gets vendor information directly from CPUID.
+ * x86_cpuid_vendor() gets vendor information directly from CPUID.
  */
-static inline int x86_vendor(void)
+static inline int x86_cpuid_vendor(void)
 {
 	u32 eax = 0x00000000;
 	u32 ebx, ecx = 0, edx;
@@ -118,40 +119,14 @@ static inline int x86_vendor(void)
 	return X86_VENDOR_UNKNOWN;
 }
 
-static inline unsigned int __x86_family(unsigned int sig)
-{
-	unsigned int x86;
-
-	x86 = (sig >> 8) & 0xf;
-
-	if (x86 == 0xf)
-		x86 += (sig >> 20) & 0xff;
-
-	return x86;
-}
-
-static inline unsigned int x86_family(void)
+static inline unsigned int x86_cpuid_family(void)
 {
 	u32 eax = 0x00000001;
 	u32 ebx, ecx = 0, edx;
 
 	native_cpuid(&eax, &ebx, &ecx, &edx);
 
-	return __x86_family(eax);
-}
-
-static inline unsigned int x86_model(unsigned int sig)
-{
-	unsigned int x86, model;
-
-	x86 = __x86_family(sig);
-
-	model = (sig >> 4) & 0xf;
-
-	if (x86 == 0x6 || x86 == 0xf)
-		model += ((sig >> 16) & 0xf) << 4;
-
-	return model;
+	return x86_family(eax);
 }
 
 #ifdef CONFIG_MICROCODE