manual update from upstream:

Applied Al's change 06a544971fad0992fe8b92c5647538d573089dd4
to new location of swiotlb.c

Signed-off-by: Tony Luck <tony.luck@intel.com>

9 files changed, 48 insertions, 225 deletions

diff --git a/arch/x86_64/ia32/ia32_aout.c b/arch/x86_64/ia32/ia32_aout.c
index 3e6780fa018..93c60f4aa47 100644
--- a/arch/x86_64/ia32/ia32_aout.c
+++ b/arch/x86_64/ia32/ia32_aout.c
@@ -314,7 +314,6 @@ static int load_aout_binary(struct linux_binprm * bprm, struct pt_regs * regs)
 	current->mm->free_area_cache = TASK_UNMAPPED_BASE;
 	current->mm->cached_hole_size = 0;
 
-	set_mm_counter(current->mm, rss, 0);
 	current->mm->mmap = NULL;
 	compute_creds(bprm);
  	current->flags &= ~PF_FORKNOEXEC;
diff --git a/arch/x86_64/ia32/ia32_ioctl.c b/arch/x86_64/ia32/ia32_ioctl.c
index 419758f19ca..4ba0e293d5e 100644
--- a/arch/x86_64/ia32/ia32_ioctl.c
+++ b/arch/x86_64/ia32/ia32_ioctl.c
@@ -12,40 +12,11 @@
 #define INCLUDES
 #include <linux/syscalls.h>
 #include "compat_ioctl.c"
-#include <asm/mtrr.h>
 #include <asm/ia32.h>
 
 #define CODE
 #include "compat_ioctl.c"
   
-#ifndef TIOCGDEV
-#define TIOCGDEV       _IOR('T',0x32, unsigned int)
-#endif
-static int tiocgdev(unsigned fd, unsigned cmd,  unsigned int __user *ptr) 
-{ 
-
-	struct file *file;
-	struct tty_struct *real_tty;
-	int fput_needed, ret;
-
-	file = fget_light(fd, &fput_needed);
-	if (!file)
-		return -EBADF;
-
-	ret = -EINVAL;
-	if (file->f_op->ioctl != tty_ioctl)
-		goto out;
-	real_tty = (struct tty_struct *)file->private_data;
-	if (!real_tty) 	
-		goto out;
-
-	ret = put_user(new_encode_dev(tty_devnum(real_tty)), ptr); 
-
-out:
-	fput_light(file, fput_needed);
-	return ret;
-} 
-
 #define RTC_IRQP_READ32	_IOR('p', 0x0b, unsigned int)	 /* Read IRQ rate   */
 #define RTC_IRQP_SET32	_IOW('p', 0x0c, unsigned int)	 /* Set IRQ rate    */
 #define RTC_EPOCH_READ32	_IOR('p', 0x0d, unsigned)	 /* Read epoch      */
@@ -85,90 +56,6 @@ static int rtc32_ioctl(unsigned fd, unsigned cmd, unsigned long arg)
 	return sys_ioctl(fd,cmd,arg); 
 } 
 
-/* /proc/mtrr ioctls */
-
-
-struct mtrr_sentry32
-{
-    compat_ulong_t base;    /*  Base address     */
-    compat_uint_t size;    /*  Size of region   */
-    compat_uint_t type;     /*  Type of region   */
-};
-
-struct mtrr_gentry32
-{
-    compat_ulong_t regnum;   /*  Register number  */
-    compat_uint_t base;    /*  Base address     */
-    compat_uint_t size;    /*  Size of region   */
-    compat_uint_t type;     /*  Type of region   */
-};
-
-#define	MTRR_IOCTL_BASE	'M'
-
-#define MTRRIOC32_ADD_ENTRY        _IOW(MTRR_IOCTL_BASE,  0, struct mtrr_sentry32)
-#define MTRRIOC32_SET_ENTRY        _IOW(MTRR_IOCTL_BASE,  1, struct mtrr_sentry32)
-#define MTRRIOC32_DEL_ENTRY        _IOW(MTRR_IOCTL_BASE,  2, struct mtrr_sentry32)
-#define MTRRIOC32_GET_ENTRY        _IOWR(MTRR_IOCTL_BASE, 3, struct mtrr_gentry32)
-#define MTRRIOC32_KILL_ENTRY       _IOW(MTRR_IOCTL_BASE,  4, struct mtrr_sentry32)
-#define MTRRIOC32_ADD_PAGE_ENTRY   _IOW(MTRR_IOCTL_BASE,  5, struct mtrr_sentry32)
-#define MTRRIOC32_SET_PAGE_ENTRY   _IOW(MTRR_IOCTL_BASE,  6, struct mtrr_sentry32)
-#define MTRRIOC32_DEL_PAGE_ENTRY   _IOW(MTRR_IOCTL_BASE,  7, struct mtrr_sentry32)
-#define MTRRIOC32_GET_PAGE_ENTRY   _IOWR(MTRR_IOCTL_BASE, 8, struct mtrr_gentry32)
-#define MTRRIOC32_KILL_PAGE_ENTRY  _IOW(MTRR_IOCTL_BASE,  9, struct mtrr_sentry32)
-
-
-static int mtrr_ioctl32(unsigned int fd, unsigned int cmd, unsigned long arg)
-{ 
-	struct mtrr_gentry g;
-	struct mtrr_sentry s;
-	int get = 0, err = 0; 
-	struct mtrr_gentry32 __user *g32 = (struct mtrr_gentry32 __user *)arg; 
-	mm_segment_t oldfs = get_fs(); 
-
-	switch (cmd) { 
-#define SET(x) case MTRRIOC32_ ## x ## _ENTRY: cmd = MTRRIOC_ ## x ## _ENTRY; break 
-#define GET(x) case MTRRIOC32_ ## x ## _ENTRY: cmd = MTRRIOC_ ## x ## _ENTRY; get=1; break
-		SET(ADD);
-		SET(SET); 
-		SET(DEL);
-		GET(GET); 
-		SET(KILL);
-		SET(ADD_PAGE); 
-		SET(SET_PAGE); 
-		SET(DEL_PAGE); 
-		GET(GET_PAGE); 
-		SET(KILL_PAGE); 
-	} 
-	
-	if (get) { 
-		err = get_user(g.regnum, &g32->regnum);
-		err |= get_user(g.base, &g32->base);
-		err |= get_user(g.size, &g32->size);
-		err |= get_user(g.type, &g32->type); 
-
-		arg = (unsigned long)&g; 
-	} else { 
-		struct mtrr_sentry32 __user *s32 = (struct mtrr_sentry32 __user *)arg;
-		err = get_user(s.base, &s32->base);
-		err |= get_user(s.size, &s32->size);
-		err |= get_user(s.type, &s32->type);
-
-		arg = (unsigned long)&s; 
-	} 
-	if (err) return err;
-	
-	set_fs(KERNEL_DS); 
-	err = sys_ioctl(fd, cmd, arg); 
-	set_fs(oldfs); 
-		
-	if (!err && get) { 
-		err = put_user(g.base, &g32->base);
-		err |= put_user(g.size, &g32->size);
-		err |= put_user(g.regnum, &g32->regnum);
-		err |= put_user(g.type, &g32->type); 
-	} 
-	return err;
-} 
 
 #define HANDLE_IOCTL(cmd,handler) { (cmd), (ioctl_trans_handler_t)(handler) }, 
 #define COMPATIBLE_IOCTL(cmd) HANDLE_IOCTL(cmd,sys_ioctl)
@@ -185,7 +72,6 @@ COMPATIBLE_IOCTL(0x4B51)   /* KDSHWCLK - not in the kernel, but don't complain *
 COMPATIBLE_IOCTL(FIOQSIZE)
 
 /* And these ioctls need translation */
-HANDLE_IOCTL(TIOCGDEV, tiocgdev)
 /* realtime device */
 HANDLE_IOCTL(RTC_IRQP_READ,  rtc32_ioctl)
 HANDLE_IOCTL(RTC_IRQP_READ32,rtc32_ioctl)
@@ -193,17 +79,6 @@ HANDLE_IOCTL(RTC_IRQP_SET32, rtc32_ioctl)
 HANDLE_IOCTL(RTC_EPOCH_READ32, rtc32_ioctl)
 HANDLE_IOCTL(RTC_EPOCH_SET32, rtc32_ioctl)
 /* take care of sizeof(sizeof()) breakage */
-/* mtrr */
-HANDLE_IOCTL(MTRRIOC32_ADD_ENTRY, mtrr_ioctl32)
-HANDLE_IOCTL(MTRRIOC32_SET_ENTRY, mtrr_ioctl32)
-HANDLE_IOCTL(MTRRIOC32_DEL_ENTRY, mtrr_ioctl32)
-HANDLE_IOCTL(MTRRIOC32_GET_ENTRY, mtrr_ioctl32)
-HANDLE_IOCTL(MTRRIOC32_KILL_ENTRY, mtrr_ioctl32)
-HANDLE_IOCTL(MTRRIOC32_ADD_PAGE_ENTRY, mtrr_ioctl32)
-HANDLE_IOCTL(MTRRIOC32_SET_PAGE_ENTRY, mtrr_ioctl32)
-HANDLE_IOCTL(MTRRIOC32_DEL_PAGE_ENTRY, mtrr_ioctl32)
-HANDLE_IOCTL(MTRRIOC32_GET_PAGE_ENTRY, mtrr_ioctl32)
-HANDLE_IOCTL(MTRRIOC32_KILL_PAGE_ENTRY, mtrr_ioctl32)
 }; 
 
 int ioctl_table_size = ARRAY_SIZE(ioctl_start);
diff --git a/arch/x86_64/kernel/i8259.c b/arch/x86_64/kernel/i8259.c
index b2a238b5a17..c6c9791d77c 100644
--- a/arch/x86_64/kernel/i8259.c
+++ b/arch/x86_64/kernel/i8259.c
@@ -494,7 +494,7 @@ void invalidate_interrupt7(void);
 void thermal_interrupt(void);
 void i8254_timer_resume(void);
 
-static void setup_timer(void)
+static void setup_timer_hardware(void)
 {
 	outb_p(0x34,0x43);		/* binary, mode 2, LSB/MSB, ch 0 */
 	udelay(10);
@@ -505,13 +505,13 @@ static void setup_timer(void)
 
 static int timer_resume(struct sys_device *dev)
 {
-	setup_timer();
+	setup_timer_hardware();
 	return 0;
 }
 
 void i8254_timer_resume(void)
 {
-	setup_timer();
+	setup_timer_hardware();
 }
 
 static struct sysdev_class timer_sysclass = {
@@ -594,7 +594,7 @@ void __init init_IRQ(void)
 	 * Set the clock to HZ Hz, we already have a valid
 	 * vector now:
 	 */
-	setup_timer();
+	setup_timer_hardware();
 
 	if (!acpi_ioapic)
 		setup_irq(2, &irq2);
diff --git a/arch/x86_64/kernel/pci-gart.c b/arch/x86_64/kernel/pci-gart.c
index cf0a0315d58..88be97c9698 100644
--- a/arch/x86_64/kernel/pci-gart.c
+++ b/arch/x86_64/kernel/pci-gart.c
@@ -187,7 +187,7 @@ static void flush_gart(struct device *dev)
 
 /* Allocate DMA memory on node near device */
 noinline
-static void *dma_alloc_pages(struct device *dev, unsigned gfp, unsigned order)
+static void *dma_alloc_pages(struct device *dev, gfp_t gfp, unsigned order)
 {
 	struct page *page;
 	int node;
@@ -204,7 +204,7 @@ static void *dma_alloc_pages(struct device *dev, unsigned gfp, unsigned order)
  */
 void *
 dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
-		   unsigned gfp)
+		   gfp_t gfp)
 {
 	void *memory;
 	unsigned long dma_mask = 0;
diff --git a/arch/x86_64/kernel/pci-nommu.c b/arch/x86_64/kernel/pci-nommu.c
index 67d90b89af0..5a981dca87f 100644
--- a/arch/x86_64/kernel/pci-nommu.c
+++ b/arch/x86_64/kernel/pci-nommu.c
@@ -24,7 +24,7 @@ EXPORT_SYMBOL(iommu_sac_force);
  */
 
 void *dma_alloc_coherent(struct device *hwdev, size_t size,
-			 dma_addr_t *dma_handle, unsigned gfp)
+			 dma_addr_t *dma_handle, gfp_t gfp)
 {
 	void *ret;
 	u64 mask;
diff --git a/arch/x86_64/kernel/setup.c b/arch/x86_64/kernel/setup.c
index cb28df14ff6..da0bc3e7bdf 100644
--- a/arch/x86_64/kernel/setup.c
+++ b/arch/x86_64/kernel/setup.c
@@ -1213,7 +1213,7 @@ static int show_cpuinfo(struct seq_file *m, void *v)
 		NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
 
 		/* Intel-defined (#2) */
-		"pni", NULL, NULL, "monitor", "ds_cpl", NULL, NULL, "est",
+		"pni", NULL, NULL, "monitor", "ds_cpl", "vmx", NULL, "est",
 		"tm2", NULL, "cid", NULL, NULL, "cx16", "xtpr", NULL,
 		NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
 		NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
diff --git a/arch/x86_64/kernel/suspend.c b/arch/x86_64/kernel/suspend.c
index f066c6ab361..fd2bef78088 100644
--- a/arch/x86_64/kernel/suspend.c
+++ b/arch/x86_64/kernel/suspend.c
@@ -63,13 +63,12 @@ void save_processor_state(void)
 	__save_processor_state(&saved_context);
 }
 
-static void
-do_fpu_end(void)
+static void do_fpu_end(void)
 {
-        /* restore FPU regs if necessary */
-	/* Do it out of line so that gcc does not move cr0 load to some stupid place */
-        kernel_fpu_end();
-	mxcsr_feature_mask_init();
+	/*
+	 * Restore FPU regs if necessary
+	 */
+	kernel_fpu_end();
 }
 
 void __restore_processor_state(struct saved_context *ctxt)
@@ -148,57 +147,7 @@ extern int restore_image(void);
 
 pgd_t *temp_level4_pgt;
 
-static void **pages;
-
-static inline void *__add_page(void)
-{
-	void **c;
-
-	c = (void **)get_usable_page(GFP_ATOMIC);
-	if (c) {
-		*c = pages;
-		pages = c;
-	}
-	return c;
-}
-
-static inline void *__next_page(void)
-{
-	void **c;
-
-	c = pages;
-	if (c) {
-		pages = *c;
-		*c = NULL;
-	}
-	return c;
-}
-
-/*
- * Try to allocate as many usable pages as needed and daisy chain them.
- * If one allocation fails, free the pages allocated so far
- */
-static int alloc_usable_pages(unsigned long n)
-{
-	void *p;
-
-	pages = NULL;
-	do
-		if (!__add_page())
-			break;
-	while (--n);
-	if (n) {
-		p = __next_page();
-		while (p) {
-			free_page((unsigned long)p);
-			p = __next_page();
-		}
-		return -ENOMEM;
-	}
-	return 0;
-}
-
-static void res_phys_pud_init(pud_t *pud, unsigned long address, unsigned long end)
+static int res_phys_pud_init(pud_t *pud, unsigned long address, unsigned long end)
 {
 	long i, j;
 
@@ -212,7 +161,9 @@ static void res_phys_pud_init(pud_t *pud, unsigned long address, unsigned long e
 		if (paddr >= end)
 			break;
 
-		pmd = (pmd_t *)__next_page();
+		pmd = (pmd_t *)get_safe_page(GFP_ATOMIC);
+		if (!pmd)
+			return -ENOMEM;
 		set_pud(pud, __pud(__pa(pmd) | _KERNPG_TABLE));
 		for (j = 0; j < PTRS_PER_PMD; pmd++, j++, paddr += PMD_SIZE) {
 			unsigned long pe;
@@ -224,13 +175,17 @@ static void res_phys_pud_init(pud_t *pud, unsigned long address, unsigned long e
 			set_pmd(pmd, __pmd(pe));
 		}
 	}
+	return 0;
 }
 
-static void set_up_temporary_mappings(void)
+static int set_up_temporary_mappings(void)
 {
 	unsigned long start, end, next;
+	int error;
 
-	temp_level4_pgt = (pgd_t *)__next_page();
+	temp_level4_pgt = (pgd_t *)get_safe_page(GFP_ATOMIC);
+	if (!temp_level4_pgt)
+		return -ENOMEM;
 
 	/* It is safe to reuse the original kernel mapping */
 	set_pgd(temp_level4_pgt + pgd_index(__START_KERNEL_map),
@@ -241,29 +196,27 @@ static void set_up_temporary_mappings(void)
 	end = (unsigned long)pfn_to_kaddr(end_pfn);
 
 	for (; start < end; start = next) {
-		pud_t *pud = (pud_t *)__next_page();
+		pud_t *pud = (pud_t *)get_safe_page(GFP_ATOMIC);
+		if (!pud)
+			return -ENOMEM;
 		next = start + PGDIR_SIZE;
 		if (next > end)
 			next = end;
-		res_phys_pud_init(pud, __pa(start), __pa(next));
+		if ((error = res_phys_pud_init(pud, __pa(start), __pa(next))))
+			return error;
 		set_pgd(temp_level4_pgt + pgd_index(start),
 			mk_kernel_pgd(__pa(pud)));
 	}
+	return 0;
 }
 
 int swsusp_arch_resume(void)
 {
-	unsigned long n;
+	int error;
 
-	n = ((end_pfn << PAGE_SHIFT) + PUD_SIZE - 1) >> PUD_SHIFT;
-	n += (n + PTRS_PER_PUD - 1) / PTRS_PER_PUD + 1;
-	pr_debug("swsusp_arch_resume(): pages needed = %lu\n", n);
-	if (alloc_usable_pages(n)) {
-		free_eaten_memory();
-		return -ENOMEM;
-	}
 	/* We have got enough memory and from now on we cannot recover */
-	set_up_temporary_mappings();
+	if ((error = set_up_temporary_mappings()))
+		return error;
 	restore_image();
 	return 0;
 }
diff --git a/arch/x86_64/kernel/time.c b/arch/x86_64/kernel/time.c
index 703acde2a1a..fdaddc4e528 100644
--- a/arch/x86_64/kernel/time.c
+++ b/arch/x86_64/kernel/time.c
@@ -42,10 +42,6 @@
 #include <asm/apic.h>
 #endif
 
-u64 jiffies_64 = INITIAL_JIFFIES;
-
-EXPORT_SYMBOL(jiffies_64);
-
 #ifdef CONFIG_CPU_FREQ
 static void cpufreq_delayed_get(void);
 #endif
@@ -481,9 +477,9 @@ static irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 static unsigned int cyc2ns_scale;
 #define CYC2NS_SCALE_FACTOR 10 /* 2^10, carefully chosen */
 
-static inline void set_cyc2ns_scale(unsigned long cpu_mhz)
+static inline void set_cyc2ns_scale(unsigned long cpu_khz)
 {
-	cyc2ns_scale = (1000 << CYC2NS_SCALE_FACTOR)/cpu_mhz;
+	cyc2ns_scale = (1000000 << CYC2NS_SCALE_FACTOR)/cpu_khz;
 }
 
 static inline unsigned long long cycles_2_ns(unsigned long long cyc)
@@ -655,7 +651,7 @@ static int time_cpufreq_notifier(struct notifier_block *nb, unsigned long val,
 			vxtime.tsc_quot = (1000L << 32) / cpu_khz;
 	}
 	
-	set_cyc2ns_scale(cpu_khz_ref / 1000);
+	set_cyc2ns_scale(cpu_khz_ref);
 
 	return 0;
 }
@@ -939,7 +935,7 @@ void __init time_init(void)
 	rdtscll_sync(&vxtime.last_tsc);
 	setup_irq(0, &irq0);
 
-	set_cyc2ns_scale(cpu_khz / 1000);
+	set_cyc2ns_scale(cpu_khz);
 
 #ifndef CONFIG_SMP
 	time_init_gtod();
@@ -1093,6 +1089,7 @@ static unsigned long PIE_freq = DEFAULT_RTC_INT_FREQ;
 static unsigned long PIE_count;
 
 static unsigned long hpet_rtc_int_freq; /* RTC interrupt frequency */
+static unsigned int hpet_t1_cmp; /* cached comparator register */
 
 int is_hpet_enabled(void)
 {
@@ -1129,10 +1126,12 @@ int hpet_rtc_timer_init(void)
 	cnt = hpet_readl(HPET_COUNTER);
 	cnt += ((hpet_tick*HZ)/hpet_rtc_int_freq);
 	hpet_writel(cnt, HPET_T1_CMP);
+	hpet_t1_cmp = cnt;
 	local_irq_restore(flags);
 
 	cfg = hpet_readl(HPET_T1_CFG);
-	cfg |= HPET_TN_ENABLE | HPET_TN_SETVAL | HPET_TN_32BIT;
+	cfg &= ~HPET_TN_PERIODIC;
+	cfg |= HPET_TN_ENABLE | HPET_TN_32BIT;
 	hpet_writel(cfg, HPET_T1_CFG);
 
 	return 1;
@@ -1142,8 +1141,12 @@ static void hpet_rtc_timer_reinit(void)
 {
 	unsigned int cfg, cnt;
 
-	if (!(PIE_on | AIE_on | UIE_on))
+	if (unlikely(!(PIE_on | AIE_on | UIE_on))) {
+		cfg = hpet_readl(HPET_T1_CFG);
+		cfg &= ~HPET_TN_ENABLE;
+		hpet_writel(cfg, HPET_T1_CFG);
 		return;
+	}
 
 	if (PIE_on && (PIE_freq > DEFAULT_RTC_INT_FREQ))
 		hpet_rtc_int_freq = PIE_freq;
@@ -1151,15 +1154,10 @@ static void hpet_rtc_timer_reinit(void)
 		hpet_rtc_int_freq = DEFAULT_RTC_INT_FREQ;
 
 	/* It is more accurate to use the comparator value than current count.*/
-	cnt = hpet_readl(HPET_T1_CMP);
+	cnt = hpet_t1_cmp;
 	cnt += hpet_tick*HZ/hpet_rtc_int_freq;
 	hpet_writel(cnt, HPET_T1_CMP);
-
-	cfg = hpet_readl(HPET_T1_CFG);
-	cfg |= HPET_TN_ENABLE | HPET_TN_SETVAL | HPET_TN_32BIT;
-	hpet_writel(cfg, HPET_T1_CFG);
-
-	return;
+	hpet_t1_cmp = cnt;
 }
 
 /*
diff --git a/arch/x86_64/mm/ioremap.c b/arch/x86_64/mm/ioremap.c
index 6972df480d2..ecf7acb5db9 100644
--- a/arch/x86_64/mm/ioremap.c
+++ b/arch/x86_64/mm/ioremap.c
@@ -60,7 +60,7 @@ static inline int remap_area_pmd(pmd_t * pmd, unsigned long address, unsigned lo
 	if (address >= end)
 		BUG();
 	do {
-		pte_t * pte = pte_alloc_kernel(&init_mm, pmd, address);
+		pte_t * pte = pte_alloc_kernel(pmd, address);
 		if (!pte)
 			return -ENOMEM;
 		remap_area_pte(pte, address, end - address, address + phys_addr, flags);
@@ -105,7 +105,6 @@ static int remap_area_pages(unsigned long address, unsigned long phys_addr,
 	flush_cache_all();
 	if (address >= end)
 		BUG();
-	spin_lock(&init_mm.page_table_lock);
 	do {
 		pud_t *pud;
 		pud = pud_alloc(&init_mm, pgd, address);
@@ -119,7 +118,6 @@ static int remap_area_pages(unsigned long address, unsigned long phys_addr,
 		address = (address + PGDIR_SIZE) & PGDIR_MASK;
 		pgd++;
 	} while (address && (address < end));
-	spin_unlock(&init_mm.page_table_lock);
 	flush_tlb_all();
 	return error;
 }