x86: make 32bit support show_msr like 64 bit (a0854a46) · Commits · e / devices / android_kernel_oneplus_sm8150

arch/x86/kernel/cpu/common.c

+51 −0

Original line number	Diff line number	Diff line
		@@ -616,6 +616,49 @@ void __cpuinit identify_secondary_cpu(struct cpuinfo_x86 *c)
		mtrr_ap_init();
		}

		struct msr_range {
		unsigned min;
		unsigned max;
		};

		static struct msr_range msr_range_array[] __cpuinitdata = {
		{ 0x00000000, 0x00000418},
		{ 0xc0000000, 0xc000040b},
		{ 0xc0010000, 0xc0010142},
		{ 0xc0011000, 0xc001103b},
		};

		static void __cpuinit print_cpu_msr(void)
		{
		unsigned index;
		u64 val;
		int i;
		unsigned index_min, index_max;

		for (i = 0; i < ARRAY_SIZE(msr_range_array); i++) {
		index_min = msr_range_array[i].min;
		index_max = msr_range_array[i].max;
		for (index = index_min; index < index_max; index++) {
		if (rdmsrl_amd_safe(index, &val))
		continue;
		printk(KERN_INFO " MSR%08x: %016llx\n", index, val);
		}
		}
		}

		static int show_msr __cpuinitdata;
		static __init int setup_show_msr(char *arg)
		{
		int num;

		get_option(&arg, &num);

		if (num > 0)
		show_msr = num;
		return 1;
		}
		__setup("show_msr=", setup_show_msr);

		static __init int setup_noclflush(char *arg)
		{
		setup_clear_cpu_cap(X86_FEATURE_CLFLSH);
		@@ -644,6 +687,14 @@ void __cpuinit print_cpu_info(struct cpuinfo_x86 *c)
		printk(KERN_CONT " stepping %02x\n", c->x86_mask);
		else
		printk(KERN_CONT "\n");

		#ifdef CONFIG_SMP
		if (c->cpu_index < show_msr)
		print_cpu_msr();
		#else
		if (show_msr)
		print_cpu_msr();
		#endif
		}

		static __init int setup_disablecpuid(char *arg)