diff options
author | Borislav Petkov <bp@suse.de> | 2015-10-20 11:54:44 +0200 |
---|---|---|
committer | Ingo Molnar <mingo@kernel.org> | 2015-10-21 11:22:11 +0200 |
commit | 9a2bc335f100a0f6ee6392b9f97ac4188d84db1d (patch) | |
tree | 4faed1758e85736f25b6f0ed4e7820a02b028aea /arch | |
parent | 81ffdcdd97d94110627caa81c23d5d780083731d (diff) |
x86/microcode: Unmodularize the microcode driver
Make CONFIG_MICROCODE a bool. It was practically a bool already anyway,
since early loader was forcing it to =y.
Regardless, there's no real reason to have something be a module which
gets built-in on the majority of installations out there. And its not
like there's noticeable change in functionality - we still can load late
microcode - just the module glue disappears.
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Dave Jones <davej@codemonkey.org.uk>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Len Brown <len.brown@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/1445334889-300-2-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch')
-rw-r--r-- | arch/x86/Kconfig | 5 | ||||
-rw-r--r-- | arch/x86/include/asm/microcode.h | 6 | ||||
-rw-r--r-- | arch/x86/kernel/cpu/microcode/amd.c | 2 | ||||
-rw-r--r-- | arch/x86/kernel/cpu/microcode/core.c | 36 | ||||
-rw-r--r-- | arch/x86/kernel/cpu/microcode/intel.c | 2 | ||||
-rw-r--r-- | arch/x86/kernel/setup.c | 3 |
6 files changed, 16 insertions, 38 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 96d058a87100..fdf1f0cdf6b6 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -1123,7 +1123,8 @@ config X86_REBOOTFIXUPS Say N otherwise. config MICROCODE - tristate "CPU microcode loading support" + bool "CPU microcode loading support" + default y depends on CPU_SUP_AMD || CPU_SUP_INTEL select FW_LOADER ---help--- @@ -1174,7 +1175,7 @@ config MICROCODE_AMD_EARLY config MICROCODE_EARLY bool "Early load microcode" - depends on MICROCODE=y && BLK_DEV_INITRD + depends on MICROCODE && BLK_DEV_INITRD select MICROCODE_INTEL_EARLY if MICROCODE_INTEL select MICROCODE_AMD_EARLY if MICROCODE_AMD default y diff --git a/arch/x86/include/asm/microcode.h b/arch/x86/include/asm/microcode.h index 9e6278c7140e..d1ff724f352b 100644 --- a/arch/x86/include/asm/microcode.h +++ b/arch/x86/include/asm/microcode.h @@ -55,6 +55,12 @@ struct ucode_cpu_info { }; extern struct ucode_cpu_info ucode_cpu_info[]; +#ifdef CONFIG_MICROCODE +int __init microcode_init(void); +#else +static inline int __init microcode_init(void) { return 0; }; +#endif + #ifdef CONFIG_MICROCODE_INTEL extern struct microcode_ops * __init init_intel_microcode(void); #else diff --git a/arch/x86/kernel/cpu/microcode/amd.c b/arch/x86/kernel/cpu/microcode/amd.c index da922d1e2f71..5dcce5dc39b9 100644 --- a/arch/x86/kernel/cpu/microcode/amd.c +++ b/arch/x86/kernel/cpu/microcode/amd.c @@ -523,7 +523,7 @@ static struct microcode_ops microcode_amd_ops = { struct microcode_ops * __init init_amd_microcode(void) { - struct cpuinfo_x86 *c = &cpu_data(0); + struct cpuinfo_x86 *c = &boot_cpu_data; if (c->x86_vendor != X86_VENDOR_AMD || c->x86 < 0x10) { pr_warning("AMD CPU family 0x%x not supported\n", c->x86); diff --git a/arch/x86/kernel/cpu/microcode/core.c b/arch/x86/kernel/cpu/microcode/core.c index 9e3f3c7dd5d7..15491dd3131e 100644 --- a/arch/x86/kernel/cpu/microcode/core.c +++ b/arch/x86/kernel/cpu/microcode/core.c @@ -487,9 +487,9 @@ static struct attribute_group cpu_root_microcode_group = { .attrs = cpu_root_microcode_attrs, }; -static int __init microcode_init(void) +int __init microcode_init(void) { - struct cpuinfo_x86 *c = &cpu_data(0); + struct cpuinfo_x86 *c = &boot_cpu_data; int error; if (paravirt_enabled() || dis_ucode_ldr) @@ -560,35 +560,3 @@ static int __init microcode_init(void) return error; } -module_init(microcode_init); - -static void __exit microcode_exit(void) -{ - struct cpuinfo_x86 *c = &cpu_data(0); - - microcode_dev_exit(); - - unregister_hotcpu_notifier(&mc_cpu_notifier); - unregister_syscore_ops(&mc_syscore_ops); - - sysfs_remove_group(&cpu_subsys.dev_root->kobj, - &cpu_root_microcode_group); - - get_online_cpus(); - mutex_lock(µcode_mutex); - - subsys_interface_unregister(&mc_cpu_interface); - - mutex_unlock(µcode_mutex); - put_online_cpus(); - - platform_device_unregister(microcode_pdev); - - microcode_ops = NULL; - - if (c->x86_vendor == X86_VENDOR_AMD) - exit_amd_microcode(); - - pr_info("Microcode Update Driver: v" MICROCODE_VERSION " removed.\n"); -} -module_exit(microcode_exit); diff --git a/arch/x86/kernel/cpu/microcode/intel.c b/arch/x86/kernel/cpu/microcode/intel.c index 969dc17eb1b4..bfd6fcd242ea 100644 --- a/arch/x86/kernel/cpu/microcode/intel.c +++ b/arch/x86/kernel/cpu/microcode/intel.c @@ -264,7 +264,7 @@ static struct microcode_ops microcode_intel_ops = { struct microcode_ops * __init init_intel_microcode(void) { - struct cpuinfo_x86 *c = &cpu_data(0); + struct cpuinfo_x86 *c = &boot_cpu_data; if (c->x86_vendor != X86_VENDOR_INTEL || c->x86 < 6 || cpu_has(c, X86_FEATURE_IA64)) { diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index 3f75297d5fd0..3a896109e1df 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -111,6 +111,7 @@ #include <asm/mce.h> #include <asm/alternative.h> #include <asm/prom.h> +#include <asm/microcode.h> /* * max_low_pfn_mapped: highest direct mapped pfn under 4GB @@ -1239,6 +1240,8 @@ void __init setup_arch(char **cmdline_p) if (efi_enabled(EFI_BOOT)) efi_apply_memmap_quirks(); #endif + + microcode_init(); } #ifdef CONFIG_X86_32 |