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

torvalds · torvalds · commit db2ab474c4a4 · 2018-12-26T17:35:41.000-08:00
Pull x86 cpu updates from Ingo Molnar:
 "Misc changes:

   - Fix nr_cpus= boot option interaction bug with logical package
     management

   - Clean up UMIP detection messages

   - Add WBNOINVD instruction detection

   - Remove the unused get_scattered_cpuid_leaf() function"

* 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/topology: Use total_cpus for max logical packages calculation
  x86/umip: Make the UMIP activated message generic
  x86/umip: Print UMIP line only once
  x86/cpufeatures: Add WBNOINVD feature definition
  x86/cpufeatures: Remove get_scattered_cpuid_leaf()
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
@@ -353,7 +353,7 @@ static __always_inline void setup_umip(struct cpuinfo_x86 *c)
 
 	cr4_set_bits(X86_CR4_UMIP);
 
-	pr_info("x86/cpu: Activated the Intel User Mode Instruction Prevention (UMIP) CPU feature\n");
+	pr_info_once("x86/cpu: User Mode Instruction Prevention (UMIP) activated\n");
 
 	return;
 
diff --git a/arch/x86/kernel/cpu/cpu.h b/arch/x86/kernel/cpu/cpu.h
@@ -49,9 +49,6 @@ extern void get_cpu_cap(struct cpuinfo_x86 *c);
 extern void get_cpu_address_sizes(struct cpuinfo_x86 *c);
 extern void cpu_detect_cache_sizes(struct cpuinfo_x86 *c);
 extern void init_scattered_cpuid_features(struct cpuinfo_x86 *c);
-extern u32 get_scattered_cpuid_leaf(unsigned int level,
-				    unsigned int sub_leaf,
-				    enum cpuid_regs_idx reg);
 extern void init_intel_cacheinfo(struct cpuinfo_x86 *c);
 extern void init_amd_cacheinfo(struct cpuinfo_x86 *c);
 extern void init_hygon_cacheinfo(struct cpuinfo_x86 *c);
diff --git a/arch/x86/kernel/cpu/scattered.c b/arch/x86/kernel/cpu/scattered.c
@@ -62,27 +62,3 @@ void init_scattered_cpuid_features(struct cpuinfo_x86 *c)
 			set_cpu_cap(c, cb->feature);
 	}
 }
-
-u32 get_scattered_cpuid_leaf(unsigned int level, unsigned int sub_leaf,
-			     enum cpuid_regs_idx reg)
-{
-	const struct cpuid_bit *cb;
-	u32 cpuid_val = 0;
-
-	for (cb = cpuid_bits; cb->feature; cb++) {
-
-		if (level > cb->level)
-			continue;
-
-		if (level < cb->level)
-			break;
-
-		if (reg == cb->reg && sub_leaf == cb->sub_leaf) {
-			if (cpu_has(&boot_cpu_data, cb->feature))
-				cpuid_val |= BIT(cb->bit);
-		}
-	}
-
-	return cpuid_val;
-}
-EXPORT_SYMBOL_GPL(get_scattered_cpuid_leaf);
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
@@ -1347,7 +1347,7 @@ void __init calculate_max_logical_packages(void)
 	 * extrapolate the boot cpu's data to all packages.
 	 */
 	ncpus = cpu_data(0).booted_cores * topology_max_smt_threads();
-	__max_logical_packages = DIV_ROUND_UP(nr_cpu_ids, ncpus);
+	__max_logical_packages = DIV_ROUND_UP(total_cpus, ncpus);
 	pr_info("Max logical packages: %u\n", __max_logical_packages);
 }
 

Original file line number	Diff line number	Diff line change
`@@ -1347,7 +1347,7 @@ void __init calculate_max_logical_packages(void)`
`1347`	`1347`	`* extrapolate the boot cpu's data to all packages.`
`1348`	`1348`	`*/`
`1349`	`1349`	`ncpus = cpu_data(0).booted_cores * topology_max_smt_threads();`
`1350`		`- __max_logical_packages = DIV_ROUND_UP(nr_cpu_ids, ncpus);`
	`1350`	`+ __max_logical_packages = DIV_ROUND_UP(total_cpus, ncpus);`
`1351`	`1351`	`pr_info("Max logical packages: %u\n", __max_logical_packages);`
`1352`	`1352`	`}`
`1353`	`1353`