i386: move kernel

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 0 insertions, 850 deletions

diff --git a/arch/i386/kernel/microcode.c b/arch/i386/kernel/microcode.c
deleted file mode 100644
index 09cf7811035..00000000000
--- a/arch/i386/kernel/microcode.c
+++ /dev/null
@@ -1,850 +0,0 @@
-/*
- *	Intel CPU Microcode Update Driver for Linux
- *
- *	Copyright (C) 2000-2006 Tigran Aivazian <tigran@aivazian.fsnet.co.uk>
- *		      2006	Shaohua Li <shaohua.li@intel.com>
- *
- *	This driver allows to upgrade microcode on Intel processors
- *	belonging to IA-32 family - PentiumPro, Pentium II, 
- *	Pentium III, Xeon, Pentium 4, etc.
- *
- *	Reference: Section 8.10 of Volume III, Intel Pentium 4 Manual, 
- *	Order Number 245472 or free download from:
- *		
- *	http://developer.intel.com/design/pentium4/manuals/245472.htm
- *
- *	For more information, go to http://www.urbanmyth.org/microcode
- *
- *	This program is free software; you can redistribute it and/or
- *	modify it under the terms of the GNU General Public License
- *	as published by the Free Software Foundation; either version
- *	2 of the License, or (at your option) any later version.
- *
- *	1.0	16 Feb 2000, Tigran Aivazian <tigran@sco.com>
- *		Initial release.
- *	1.01	18 Feb 2000, Tigran Aivazian <tigran@sco.com>
- *		Added read() support + cleanups.
- *	1.02	21 Feb 2000, Tigran Aivazian <tigran@sco.com>
- *		Added 'device trimming' support. open(O_WRONLY) zeroes
- *		and frees the saved copy of applied microcode.
- *	1.03	29 Feb 2000, Tigran Aivazian <tigran@sco.com>
- *		Made to use devfs (/dev/cpu/microcode) + cleanups.
- *	1.04	06 Jun 2000, Simon Trimmer <simon@veritas.com>
- *		Added misc device support (now uses both devfs and misc).
- *		Added MICROCODE_IOCFREE ioctl to clear memory.
- *	1.05	09 Jun 2000, Simon Trimmer <simon@veritas.com>
- *		Messages for error cases (non Intel & no suitable microcode).
- *	1.06	03 Aug 2000, Tigran Aivazian <tigran@veritas.com>
- *		Removed ->release(). Removed exclusive open and status bitmap.
- *		Added microcode_rwsem to serialize read()/write()/ioctl().
- *		Removed global kernel lock usage.
- *	1.07	07 Sep 2000, Tigran Aivazian <tigran@veritas.com>
- *		Write 0 to 0x8B msr and then cpuid before reading revision,
- *		so that it works even if there were no update done by the
- *		BIOS. Otherwise, reading from 0x8B gives junk (which happened
- *		to be 0 on my machine which is why it worked even when I
- *		disabled update by the BIOS)
- *		Thanks to Eric W. Biederman <ebiederman@lnxi.com> for the fix.
- *	1.08	11 Dec 2000, Richard Schaal <richard.schaal@intel.com> and
- *			     Tigran Aivazian <tigran@veritas.com>
- *		Intel Pentium 4 processor support and bugfixes.
- *	1.09	30 Oct 2001, Tigran Aivazian <tigran@veritas.com>
- *		Bugfix for HT (Hyper-Threading) enabled processors
- *		whereby processor resources are shared by all logical processors
- *		in a single CPU package.
- *	1.10	28 Feb 2002 Asit K Mallick <asit.k.mallick@intel.com> and
- *		Tigran Aivazian <tigran@veritas.com>,
- *		Serialize updates as required on HT processors due to speculative
- *		nature of implementation.
- *	1.11	22 Mar 2002 Tigran Aivazian <tigran@veritas.com>
- *		Fix the panic when writing zero-length microcode chunk.
- *	1.12	29 Sep 2003 Nitin Kamble <nitin.a.kamble@intel.com>, 
- *		Jun Nakajima <jun.nakajima@intel.com>
- *		Support for the microcode updates in the new format.
- *	1.13	10 Oct 2003 Tigran Aivazian <tigran@veritas.com>
- *		Removed ->read() method and obsoleted MICROCODE_IOCFREE ioctl
- *		because we no longer hold a copy of applied microcode 
- *		in kernel memory.
- *	1.14	25 Jun 2004 Tigran Aivazian <tigran@veritas.com>
- *		Fix sigmatch() macro to handle old CPUs with pf == 0.
- *		Thanks to Stuart Swales for pointing out this bug.
- */
-
-//#define DEBUG /* pr_debug */
-#include <linux/capability.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/sched.h>
-#include <linux/cpumask.h>
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include <linux/miscdevice.h>
-#include <linux/spinlock.h>
-#include <linux/mm.h>
-#include <linux/fs.h>
-#include <linux/mutex.h>
-#include <linux/cpu.h>
-#include <linux/firmware.h>
-#include <linux/platform_device.h>
-
-#include <asm/msr.h>
-#include <asm/uaccess.h>
-#include <asm/processor.h>
-
-MODULE_DESCRIPTION("Intel CPU (IA-32) Microcode Update Driver");
-MODULE_AUTHOR("Tigran Aivazian <tigran@aivazian.fsnet.co.uk>");
-MODULE_LICENSE("GPL");
-
-#define MICROCODE_VERSION 	"1.14a"
-
-#define DEFAULT_UCODE_DATASIZE 	(2000) 	  /* 2000 bytes */
-#define MC_HEADER_SIZE		(sizeof (microcode_header_t))  	  /* 48 bytes */
-#define DEFAULT_UCODE_TOTALSIZE (DEFAULT_UCODE_DATASIZE + MC_HEADER_SIZE) /* 2048 bytes */
-#define EXT_HEADER_SIZE		(sizeof (struct extended_sigtable)) /* 20 bytes */
-#define EXT_SIGNATURE_SIZE	(sizeof (struct extended_signature)) /* 12 bytes */
-#define DWSIZE			(sizeof (u32))
-#define get_totalsize(mc) \
-	(((microcode_t *)mc)->hdr.totalsize ? \
-	 ((microcode_t *)mc)->hdr.totalsize : DEFAULT_UCODE_TOTALSIZE)
-#define get_datasize(mc) \
-	(((microcode_t *)mc)->hdr.datasize ? \
-	 ((microcode_t *)mc)->hdr.datasize : DEFAULT_UCODE_DATASIZE)
-
-#define sigmatch(s1, s2, p1, p2) \
-	(((s1) == (s2)) && (((p1) & (p2)) || (((p1) == 0) && ((p2) == 0))))
-
-#define exttable_size(et) ((et)->count * EXT_SIGNATURE_SIZE + EXT_HEADER_SIZE)
-
-/* serialize access to the physical write to MSR 0x79 */
-static DEFINE_SPINLOCK(microcode_update_lock);
-
-/* no concurrent ->write()s are allowed on /dev/cpu/microcode */
-static DEFINE_MUTEX(microcode_mutex);
-
-static struct ucode_cpu_info {
-	int valid;
-	unsigned int sig;
-	unsigned int pf;
-	unsigned int rev;
-	microcode_t *mc;
-} ucode_cpu_info[NR_CPUS];
-
-static void collect_cpu_info(int cpu_num)
-{
-	struct cpuinfo_x86 *c = cpu_data + cpu_num;
-	struct ucode_cpu_info *uci = ucode_cpu_info + cpu_num;
-	unsigned int val[2];
-
-	/* We should bind the task to the CPU */
-	BUG_ON(raw_smp_processor_id() != cpu_num);
-	uci->pf = uci->rev = 0;
-	uci->mc = NULL;
-	uci->valid = 1;
-
-	if (c->x86_vendor != X86_VENDOR_INTEL || c->x86 < 6 ||
-	    	cpu_has(c, X86_FEATURE_IA64)) {
-		printk(KERN_ERR "microcode: CPU%d not a capable Intel "
-			"processor\n", cpu_num);
-		uci->valid = 0;
-		return;
-	}
-
-	uci->sig = cpuid_eax(0x00000001);
-
-	if ((c->x86_model >= 5) || (c->x86 > 6)) {
-		/* get processor flags from MSR 0x17 */
-		rdmsr(MSR_IA32_PLATFORM_ID, val[0], val[1]);
-		uci->pf = 1 << ((val[1] >> 18) & 7);
-	}
-
-	wrmsr(MSR_IA32_UCODE_REV, 0, 0);
-	/* see notes above for revision 1.07.  Apparent chip bug */
-	sync_core();
-	/* get the current revision from MSR 0x8B */
-	rdmsr(MSR_IA32_UCODE_REV, val[0], uci->rev);
-	pr_debug("microcode: collect_cpu_info : sig=0x%x, pf=0x%x, rev=0x%x\n",
-			uci->sig, uci->pf, uci->rev);
-}
-
-static inline int microcode_update_match(int cpu_num,
-	microcode_header_t *mc_header, int sig, int pf)
-{
-	struct ucode_cpu_info *uci = ucode_cpu_info + cpu_num;
-
-	if (!sigmatch(sig, uci->sig, pf, uci->pf)
-		|| mc_header->rev <= uci->rev)
-		return 0;
-	return 1;
-}
-
-static int microcode_sanity_check(void *mc)
-{
-	microcode_header_t *mc_header = mc;
-	struct extended_sigtable *ext_header = NULL;
-	struct extended_signature *ext_sig;
-	unsigned long total_size, data_size, ext_table_size;
-	int sum, orig_sum, ext_sigcount = 0, i;
-
-	total_size = get_totalsize(mc_header);
-	data_size = get_datasize(mc_header);
-	if (data_size + MC_HEADER_SIZE > total_size) {
-		printk(KERN_ERR "microcode: error! "
-			"Bad data size in microcode data file\n");
-		return -EINVAL;
-	}
-
-	if (mc_header->ldrver != 1 || mc_header->hdrver != 1) {
-		printk(KERN_ERR "microcode: error! "
-			"Unknown microcode update format\n");
-		return -EINVAL;
-	}
-	ext_table_size = total_size - (MC_HEADER_SIZE + data_size);
-	if (ext_table_size) {
-		if ((ext_table_size < EXT_HEADER_SIZE)
-		 || ((ext_table_size - EXT_HEADER_SIZE) % EXT_SIGNATURE_SIZE)) {
-			printk(KERN_ERR "microcode: error! "
-				"Small exttable size in microcode data file\n");
-			return -EINVAL;
-		}
-		ext_header = mc + MC_HEADER_SIZE + data_size;
-		if (ext_table_size != exttable_size(ext_header)) {
-			printk(KERN_ERR "microcode: error! "
-				"Bad exttable size in microcode data file\n");
-			return -EFAULT;
-		}
-		ext_sigcount = ext_header->count;
-	}
-
-	/* check extended table checksum */
-	if (ext_table_size) {
-		int ext_table_sum = 0;
-		int *ext_tablep = (int *)ext_header;
-
-		i = ext_table_size / DWSIZE;
-		while (i--)
-			ext_table_sum += ext_tablep[i];
-		if (ext_table_sum) {
-			printk(KERN_WARNING "microcode: aborting, "
-				"bad extended signature table checksum\n");
-			return -EINVAL;
-		}
-	}
-
-	/* calculate the checksum */
-	orig_sum = 0;
-	i = (MC_HEADER_SIZE + data_size) / DWSIZE;
-	while (i--)
-		orig_sum += ((int *)mc)[i];
-	if (orig_sum) {
-		printk(KERN_ERR "microcode: aborting, bad checksum\n");
-		return -EINVAL;
-	}
-	if (!ext_table_size)
-		return 0;
-	/* check extended signature checksum */
-	for (i = 0; i < ext_sigcount; i++) {
-		ext_sig = (struct extended_signature *)((void *)ext_header
-			+ EXT_HEADER_SIZE + EXT_SIGNATURE_SIZE * i);
-		sum = orig_sum
-			- (mc_header->sig + mc_header->pf + mc_header->cksum)
-			+ (ext_sig->sig + ext_sig->pf + ext_sig->cksum);
-		if (sum) {
-			printk(KERN_ERR "microcode: aborting, bad checksum\n");
-			return -EINVAL;
-		}
-	}
-	return 0;
-}
-
-/*
- * return 0 - no update found
- * return 1 - found update
- * return < 0 - error
- */
-static int get_maching_microcode(void *mc, int cpu)
-{
-	struct ucode_cpu_info *uci = ucode_cpu_info + cpu;
-	microcode_header_t *mc_header = mc;
-	struct extended_sigtable *ext_header;
-	unsigned long total_size = get_totalsize(mc_header);
-	int ext_sigcount, i;
-	struct extended_signature *ext_sig;
-	void *new_mc;
-
-	if (microcode_update_match(cpu, mc_header,
-			mc_header->sig, mc_header->pf))
-		goto find;
-
-	if (total_size <= get_datasize(mc_header) + MC_HEADER_SIZE)
-		return 0;
-
-	ext_header = (struct extended_sigtable *)(mc +
-			get_datasize(mc_header) + MC_HEADER_SIZE);
-	ext_sigcount = ext_header->count;
-	ext_sig = (struct extended_signature *)((void *)ext_header
-			+ EXT_HEADER_SIZE);
-	for (i = 0; i < ext_sigcount; i++) {
-		if (microcode_update_match(cpu, mc_header,
-				ext_sig->sig, ext_sig->pf))
-			goto find;
-		ext_sig++;
-	}
-	return 0;
-find:
-	pr_debug("microcode: CPU %d found a matching microcode update with"
-		" version 0x%x (current=0x%x)\n", cpu, mc_header->rev,uci->rev);
-	new_mc = vmalloc(total_size);
-	if (!new_mc) {
-		printk(KERN_ERR "microcode: error! Can not allocate memory\n");
-		return -ENOMEM;
-	}
-
-	/* free previous update file */
-	vfree(uci->mc);
-
-	memcpy(new_mc, mc, total_size);
-	uci->mc = new_mc;
-	return 1;
-}
-
-static void apply_microcode(int cpu)
-{
-	unsigned long flags;
-	unsigned int val[2];
-	int cpu_num = raw_smp_processor_id();
-	struct ucode_cpu_info *uci = ucode_cpu_info + cpu_num;
-
-	/* We should bind the task to the CPU */
-	BUG_ON(cpu_num != cpu);
-
-	if (uci->mc == NULL)
-		return;
-
-	/* serialize access to the physical write to MSR 0x79 */
-	spin_lock_irqsave(&microcode_update_lock, flags);          
-
-	/* write microcode via MSR 0x79 */
-	wrmsr(MSR_IA32_UCODE_WRITE,
-		(unsigned long) uci->mc->bits, 
-		(unsigned long) uci->mc->bits >> 16 >> 16);
-	wrmsr(MSR_IA32_UCODE_REV, 0, 0);
-
-	/* see notes above for revision 1.07.  Apparent chip bug */
-	sync_core();
-
-	/* get the current revision from MSR 0x8B */
-	rdmsr(MSR_IA32_UCODE_REV, val[0], val[1]);
-
-	spin_unlock_irqrestore(&microcode_update_lock, flags);
-	if (val[1] != uci->mc->hdr.rev) {
-		printk(KERN_ERR "microcode: CPU%d updated from revision "
-			"0x%x to 0x%x failed\n", cpu_num, uci->rev, val[1]);
-		return;
-	}
-	pr_debug("microcode: CPU%d updated from revision "
-	       "0x%x to 0x%x, date = %08x \n", 
-	       cpu_num, uci->rev, val[1], uci->mc->hdr.date);
-	uci->rev = val[1];
-}
-
-#ifdef CONFIG_MICROCODE_OLD_INTERFACE
-static void __user *user_buffer;	/* user area microcode data buffer */
-static unsigned int user_buffer_size;	/* it's size */
-
-static long get_next_ucode(void **mc, long offset)
-{
-	microcode_header_t mc_header;
-	unsigned long total_size;
-
-	/* No more data */
-	if (offset >= user_buffer_size)
-		return 0;
-	if (copy_from_user(&mc_header, user_buffer + offset, MC_HEADER_SIZE)) {
-		printk(KERN_ERR "microcode: error! Can not read user data\n");
-		return -EFAULT;
-	}
-	total_size = get_totalsize(&mc_header);
-	if (offset + total_size > user_buffer_size) {
-		printk(KERN_ERR "microcode: error! Bad total size in microcode "
-				"data file\n");
-		return -EINVAL;
-	}
-	*mc = vmalloc(total_size);
-	if (!*mc)
-		return -ENOMEM;
-	if (copy_from_user(*mc, user_buffer + offset, total_size)) {
-		printk(KERN_ERR "microcode: error! Can not read user data\n");
-		vfree(*mc);
-		return -EFAULT;
-	}
-	return offset + total_size;
-}
-
-static int do_microcode_update (void)
-{
-	long cursor = 0;
-	int error = 0;
-	void *new_mc = NULL;
-	int cpu;
-	cpumask_t old;
-
-	old = current->cpus_allowed;
-
-	while ((cursor = get_next_ucode(&new_mc, cursor)) > 0) {
-		error = microcode_sanity_check(new_mc);
-		if (error)
-			goto out;
-		/*
-		 * It's possible the data file has multiple matching ucode,
-		 * lets keep searching till the latest version
-		 */
-		for_each_online_cpu(cpu) {
-			struct ucode_cpu_info *uci = ucode_cpu_info + cpu;
-
-			if (!uci->valid)
-				continue;
-			set_cpus_allowed(current, cpumask_of_cpu(cpu));
-			error = get_maching_microcode(new_mc, cpu);
-			if (error < 0)
-				goto out;
-			if (error == 1)
-				apply_microcode(cpu);
-		}
-		vfree(new_mc);
-	}
-out:
-	if (cursor > 0)
-		vfree(new_mc);
-	if (cursor < 0)
-		error = cursor;
-	set_cpus_allowed(current, old);
-	return error;
-}
-
-static int microcode_open (struct inode *unused1, struct file *unused2)
-{
-	return capable(CAP_SYS_RAWIO) ? 0 : -EPERM;
-}
-
-static ssize_t microcode_write (struct file *file, const char __user *buf, size_t len, loff_t *ppos)
-{
-	ssize_t ret;
-
-	if ((len >> PAGE_SHIFT) > num_physpages) {
-		printk(KERN_ERR "microcode: too much data (max %ld pages)\n", num_physpages);
-		return -EINVAL;
-	}
-
-	lock_cpu_hotplug();
-	mutex_lock(&microcode_mutex);
-
-	user_buffer = (void __user *) buf;
-	user_buffer_size = (int) len;
-
-	ret = do_microcode_update();
-	if (!ret)
-		ret = (ssize_t)len;
-
-	mutex_unlock(&microcode_mutex);
-	unlock_cpu_hotplug();
-
-	return ret;
-}
-
-static const struct file_operations microcode_fops = {
-	.owner		= THIS_MODULE,
-	.write		= microcode_write,
-	.open		= microcode_open,
-};
-
-static struct miscdevice microcode_dev = {
-	.minor		= MICROCODE_MINOR,
-	.name		= "microcode",
-	.fops		= &microcode_fops,
-};
-
-static int __init microcode_dev_init (void)
-{
-	int error;
-
-	error = misc_register(&microcode_dev);
-	if (error) {
-		printk(KERN_ERR
-			"microcode: can't misc_register on minor=%d\n",
-			MICROCODE_MINOR);
-		return error;
-	}
-
-	return 0;
-}
-
-static void microcode_dev_exit (void)
-{
-	misc_deregister(&microcode_dev);
-}
-
-MODULE_ALIAS_MISCDEV(MICROCODE_MINOR);
-#else
-#define microcode_dev_init() 0
-#define microcode_dev_exit() do { } while(0)
-#endif
-
-static long get_next_ucode_from_buffer(void **mc, void *buf,
-	unsigned long size, long offset)
-{
-	microcode_header_t *mc_header;
-	unsigned long total_size;
-
-	/* No more data */
-	if (offset >= size)
-		return 0;
-	mc_header = (microcode_header_t *)(buf + offset);
-	total_size = get_totalsize(mc_header);
-
-	if (offset + total_size > size) {
-		printk(KERN_ERR "microcode: error! Bad data in microcode data file\n");
-		return -EINVAL;
-	}
-
-	*mc = vmalloc(total_size);
-	if (!*mc) {
-		printk(KERN_ERR "microcode: error! Can not allocate memory\n");
-		return -ENOMEM;
-	}
-	memcpy(*mc, buf + offset, total_size);
-	return offset + total_size;
-}
-
-/* fake device for request_firmware */
-static struct platform_device *microcode_pdev;
-
-static int cpu_request_microcode(int cpu)
-{
-	char name[30];
-	struct cpuinfo_x86 *c = cpu_data + cpu;
-	const struct firmware *firmware;
-	void *buf;
-	unsigned long size;
-	long offset = 0;
-	int error;
-	void *mc;
-
-	/* We should bind the task to the CPU */
-	BUG_ON(cpu != raw_smp_processor_id());
-	sprintf(name,"intel-ucode/%02x-%02x-%02x",
-		c->x86, c->x86_model, c->x86_mask);
-	error = request_firmware(&firmware, name, &microcode_pdev->dev);
-	if (error) {
-		pr_debug("ucode data file %s load failed\n", name);
-		return error;
-	}
-	buf = (void *)firmware->data;
-	size = firmware->size;
-	while ((offset = get_next_ucode_from_buffer(&mc, buf, size, offset))
-			> 0) {
-		error = microcode_sanity_check(mc);
-		if (error)
-			break;
-		error = get_maching_microcode(mc, cpu);
-		if (error < 0)
-			break;
-		/*
-		 * It's possible the data file has multiple matching ucode,
-		 * lets keep searching till the latest version
-		 */
-		if (error == 1) {
-			apply_microcode(cpu);
-			error = 0;
-		}
-		vfree(mc);
-	}
-	if (offset > 0)
-		vfree(mc);
-	if (offset < 0)
-		error = offset;
-	release_firmware(firmware);
-
-	return error;
-}
-
-static int apply_microcode_check_cpu(int cpu)
-{
-	struct cpuinfo_x86 *c = cpu_data + cpu;
-	struct ucode_cpu_info *uci = ucode_cpu_info + cpu;
-	cpumask_t old;
-	unsigned int val[2];
-	int err = 0;
-
-	/* Check if the microcode is available */
-	if (!uci->mc)
-		return 0;
-
-	old = current->cpus_allowed;
-	set_cpus_allowed(current, cpumask_of_cpu(cpu));
-
-	/* Check if the microcode we have in memory matches the CPU */
-	if (c->x86_vendor != X86_VENDOR_INTEL || c->x86 < 6 ||
-	    cpu_has(c, X86_FEATURE_IA64) || uci->sig != cpuid_eax(0x00000001))
-		err = -EINVAL;
-
-	if (!err && ((c->x86_model >= 5) || (c->x86 > 6))) {
-		/* get processor flags from MSR 0x17 */
-		rdmsr(MSR_IA32_PLATFORM_ID, val[0], val[1]);
-		if (uci->pf != (1 << ((val[1] >> 18) & 7)))
-			err = -EINVAL;
-	}
-
-	if (!err) {
-		wrmsr(MSR_IA32_UCODE_REV, 0, 0);
-		/* see notes above for revision 1.07.  Apparent chip bug */
-		sync_core();
-		/* get the current revision from MSR 0x8B */
-		rdmsr(MSR_IA32_UCODE_REV, val[0], val[1]);
-		if (uci->rev != val[1])
-			err = -EINVAL;
-	}
-
-	if (!err)
-		apply_microcode(cpu);
-	else
-		printk(KERN_ERR "microcode: Could not apply microcode to CPU%d:"
-			" sig=0x%x, pf=0x%x, rev=0x%x\n",
-			cpu, uci->sig, uci->pf, uci->rev);
-
-	set_cpus_allowed(current, old);
-	return err;
-}
-
-static void microcode_init_cpu(int cpu, int resume)
-{
-	cpumask_t old;
-	struct ucode_cpu_info *uci = ucode_cpu_info + cpu;
-
-	old = current->cpus_allowed;
-
-	set_cpus_allowed(current, cpumask_of_cpu(cpu));
-	mutex_lock(&microcode_mutex);
-	collect_cpu_info(cpu);
-	if (uci->valid && system_state == SYSTEM_RUNNING && !resume)
-		cpu_request_microcode(cpu);
-	mutex_unlock(&microcode_mutex);
-	set_cpus_allowed(current, old);
-}
-
-static void microcode_fini_cpu(int cpu)
-{
-	struct ucode_cpu_info *uci = ucode_cpu_info + cpu;
-
-	mutex_lock(&microcode_mutex);
-	uci->valid = 0;
-	vfree(uci->mc);
-	uci->mc = NULL;
-	mutex_unlock(&microcode_mutex);
-}
-
-static ssize_t reload_store(struct sys_device *dev, const char *buf, size_t sz)
-{
-	struct ucode_cpu_info *uci = ucode_cpu_info + dev->id;
-	char *end;
-	unsigned long val = simple_strtoul(buf, &end, 0);
-	int err = 0;
-	int cpu = dev->id;
-
-	if (end == buf)
-		return -EINVAL;
-	if (val == 1) {
-		cpumask_t old;
-
-		old = current->cpus_allowed;
-
-		lock_cpu_hotplug();
-		set_cpus_allowed(current, cpumask_of_cpu(cpu));
-
-		mutex_lock(&microcode_mutex);
-		if (uci->valid)
-			err = cpu_request_microcode(cpu);
-		mutex_unlock(&microcode_mutex);
-		unlock_cpu_hotplug();
-		set_cpus_allowed(current, old);
-	}
-	if (err)
-		return err;
-	return sz;
-}
-
-static ssize_t version_show(struct sys_device *dev, char *buf)
-{
-	struct ucode_cpu_info *uci = ucode_cpu_info + dev->id;
-
-	return sprintf(buf, "0x%x\n", uci->rev);
-}
-
-static ssize_t pf_show(struct sys_device *dev, char *buf)
-{
-	struct ucode_cpu_info *uci = ucode_cpu_info + dev->id;
-
-	return sprintf(buf, "0x%x\n", uci->pf);
-}
-
-static SYSDEV_ATTR(reload, 0200, NULL, reload_store);
-static SYSDEV_ATTR(version, 0400, version_show, NULL);
-static SYSDEV_ATTR(processor_flags, 0400, pf_show, NULL);
-
-static struct attribute *mc_default_attrs[] = {
-	&attr_reload.attr,
-	&attr_version.attr,
-	&attr_processor_flags.attr,
-	NULL
-};
-
-static struct attribute_group mc_attr_group = {
-	.attrs = mc_default_attrs,
-	.name = "microcode",
-};
-
-static int __mc_sysdev_add(struct sys_device *sys_dev, int resume)
-{
-	int err, cpu = sys_dev->id;
-	struct ucode_cpu_info *uci = ucode_cpu_info + cpu;
-
-	if (!cpu_online(cpu))
-		return 0;
-
-	pr_debug("Microcode:CPU %d added\n", cpu);
-	memset(uci, 0, sizeof(*uci));
-
-	err = sysfs_create_group(&sys_dev->kobj, &mc_attr_group);
-	if (err)
-		return err;
-
-	microcode_init_cpu(cpu, resume);
-
-	return 0;
-}
-
-static int mc_sysdev_add(struct sys_device *sys_dev)
-{
-	return __mc_sysdev_add(sys_dev, 0);
-}
-
-static int mc_sysdev_remove(struct sys_device *sys_dev)
-{
-	int cpu = sys_dev->id;
-
-	if (!cpu_online(cpu))
-		return 0;
-
-	pr_debug("Microcode:CPU %d removed\n", cpu);
-	microcode_fini_cpu(cpu);
-	sysfs_remove_group(&sys_dev->kobj, &mc_attr_group);
-	return 0;
-}
-
-static int mc_sysdev_resume(struct sys_device *dev)
-{
-	int cpu = dev->id;
-
-	if (!cpu_online(cpu))
-		return 0;
-	pr_debug("Microcode:CPU %d resumed\n", cpu);
-	/* only CPU 0 will apply ucode here */
-	apply_microcode(0);
-	return 0;
-}
-
-static struct sysdev_driver mc_sysdev_driver = {
-	.add = mc_sysdev_add,
-	.remove = mc_sysdev_remove,
-	.resume = mc_sysdev_resume,
-};
-
-static __cpuinit int
-mc_cpu_callback(struct notifier_block *nb, unsigned long action, void *hcpu)
-{
-	unsigned int cpu = (unsigned long)hcpu;
-	struct sys_device *sys_dev;
-
-	sys_dev = get_cpu_sysdev(cpu);
-	switch (action) {
-	case CPU_UP_CANCELED_FROZEN:
-		/* The CPU refused to come up during a system resume */
-		microcode_fini_cpu(cpu);
-		break;
-	case CPU_ONLINE:
-	case CPU_DOWN_FAILED:
-		mc_sysdev_add(sys_dev);
-		break;
-	case CPU_ONLINE_FROZEN:
-		/* System-wide resume is in progress, try to apply microcode */
-		if (apply_microcode_check_cpu(cpu)) {
-			/* The application of microcode failed */
-			microcode_fini_cpu(cpu);
-			__mc_sysdev_add(sys_dev, 1);
-			break;
-		}
-	case CPU_DOWN_FAILED_FROZEN:
-		if (sysfs_create_group(&sys_dev->kobj, &mc_attr_group))
-			printk(KERN_ERR "Microcode: Failed to create the sysfs "
-				"group for CPU%d\n", cpu);
-		break;
-	case CPU_DOWN_PREPARE:
-		mc_sysdev_remove(sys_dev);
-		break;
-	case CPU_DOWN_PREPARE_FROZEN:
-		/* Suspend is in progress, only remove the interface */
-		sysfs_remove_group(&sys_dev->kobj, &mc_attr_group);
-		break;
-	}
-	return NOTIFY_OK;
-}
-
-static struct notifier_block __cpuinitdata mc_cpu_notifier = {
-	.notifier_call = mc_cpu_callback,
-};
-
-static int __init microcode_init (void)
-{
-	int error;
-
-	error = microcode_dev_init();
-	if (error)
-		return error;
-	microcode_pdev = platform_device_register_simple("microcode", -1,
-							 NULL, 0);
-	if (IS_ERR(microcode_pdev)) {
-		microcode_dev_exit();
-		return PTR_ERR(microcode_pdev);
-	}
-
-	lock_cpu_hotplug();
-	error = sysdev_driver_register(&cpu_sysdev_class, &mc_sysdev_driver);
-	unlock_cpu_hotplug();
-	if (error) {
-		microcode_dev_exit();
-		platform_device_unregister(microcode_pdev);
-		return error;
-	}
-
-	register_hotcpu_notifier(&mc_cpu_notifier);
-
-	printk(KERN_INFO 
-		"IA-32 Microcode Update Driver: v" MICROCODE_VERSION " <tigran@aivazian.fsnet.co.uk>\n");
-	return 0;
-}
-
-static void __exit microcode_exit (void)
-{
-	microcode_dev_exit();
-
-	unregister_hotcpu_notifier(&mc_cpu_notifier);
-
-	lock_cpu_hotplug();
-	sysdev_driver_unregister(&cpu_sysdev_class, &mc_sysdev_driver);
-	unlock_cpu_hotplug();
-
-	platform_device_unregister(microcode_pdev);
-}
-
-module_init(microcode_init)
-module_exit(microcode_exit)