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Commit 3d54ac9e authored by Linus Torvalds's avatar Linus Torvalds
Browse files

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

Pull x86 fixes from Ingo Molnar:
 "EFI fixes, and FPU fix, a ticket spinlock boundary condition fix and
  two build fixes"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/fpu: Always restore_xinit_state() when use_eager_cpu()
  x86: Make cpu_tss available to external modules
  efi: Fix error handling in add_sysfs_runtime_map_entry()
  x86/spinlocks: Fix regression in spinlock contention detection
  x86/mm: Clean up types in xlate_dev_mem_ptr()
  x86/efi: Store upper bits of command line buffer address in ext_cmd_line_ptr
  efivarfs: Ensure VariableName is NUL-terminated
parents d8fce2db c88d4748

arch/x86/boot/compressed/eboot.c

+2 −0
Original line number Diff line number Diff line
@@ -1109,6 +1109,8 @@ struct boot_params *make_boot_params(struct efi_config *c) 
	if (!cmdline_ptr)

		goto fail;

	hdr->cmd_line_ptr = (unsigned long)cmdline_ptr;

	/* Fill in upper bits of command line address, NOP on 32 bit  */

	boot_params->ext_cmd_line_ptr = (u64)(unsigned long)cmdline_ptr >> 32;



	hdr->ramdisk_image = 0;

	hdr->ramdisk_size = 0;

arch/x86/include/asm/spinlock.h

+1 −1
Original line number Diff line number Diff line
@@ -169,7 +169,7 @@ static inline int arch_spin_is_contended(arch_spinlock_t *lock) 
	struct __raw_tickets tmp = READ_ONCE(lock->tickets);



	tmp.head &= ~TICKET_SLOWPATH_FLAG;

	return (tmp.tail - tmp.head) > TICKET_LOCK_INC;

	return (__ticket_t)(tmp.tail - tmp.head) > TICKET_LOCK_INC;

}

#define arch_spin_is_contended	arch_spin_is_contended

arch/x86/kernel/process.c

+8 −6
Original line number Diff line number Diff line
@@ -57,7 +57,7 @@ __visible DEFINE_PER_CPU_SHARED_ALIGNED(struct tss_struct, cpu_tss) = { 
	.io_bitmap		= { [0 ... IO_BITMAP_LONGS] = ~0 },

#endif

};

EXPORT_PER_CPU_SYMBOL_GPL(cpu_tss);

EXPORT_PER_CPU_SYMBOL(cpu_tss);



#ifdef CONFIG_X86_64

static DEFINE_PER_CPU(unsigned char, is_idle);
@@ -156,11 +156,13 @@ void flush_thread(void) 
		/* FPU state will be reallocated lazily at the first use. */

		drop_fpu(tsk);

		free_thread_xstate(tsk);

	} else if (!used_math()) {

	} else {

		if (!tsk_used_math(tsk)) {

			/* kthread execs. TODO: cleanup this horror. */

			if (WARN_ON(init_fpu(tsk)))

				force_sig(SIGKILL, tsk);

			user_fpu_begin();

		}

		restore_init_xstate();

	}

}

arch/x86/mm/ioremap.c

+8 −6
Original line number Diff line number Diff line
@@ -351,18 +351,20 @@ int arch_ioremap_pmd_supported(void) 
 */

void *xlate_dev_mem_ptr(phys_addr_t phys)

{

	void *addr;

	unsigned long start  = phys &  PAGE_MASK;

	unsigned long offset = phys & ~PAGE_MASK;

	unsigned long vaddr;



	/* If page is RAM, we can use __va. Otherwise ioremap and unmap. */

	if (page_is_ram(start >> PAGE_SHIFT))

		return __va(phys);



	addr = (void __force *)ioremap_cache(start, PAGE_SIZE);

	if (addr)

		addr = (void *)((unsigned long)addr | (phys & ~PAGE_MASK));

	vaddr = (unsigned long)ioremap_cache(start, PAGE_SIZE);

	/* Only add the offset on success and return NULL if the ioremap() failed: */

	if (vaddr)

		vaddr += offset;



	return addr;

	return (void *)vaddr;

}



void unxlate_dev_mem_ptr(phys_addr_t phys, void *addr)

drivers/firmware/efi/runtime-map.c

+3 −3
Original line number Diff line number Diff line
@@ -120,7 +120,8 @@ add_sysfs_runtime_map_entry(struct kobject *kobj, int nr) 
	entry = kzalloc(sizeof(*entry), GFP_KERNEL);

	if (!entry) {

		kset_unregister(map_kset);

		return entry;

		map_kset = NULL;

		return ERR_PTR(-ENOMEM);

	}



	memcpy(&entry->md, efi_runtime_map + nr * efi_memdesc_size,
@@ -132,6 +133,7 @@ add_sysfs_runtime_map_entry(struct kobject *kobj, int nr) 
	if (ret) {

		kobject_put(&entry->kobj);

		kset_unregister(map_kset);

		map_kset = NULL;

		return ERR_PTR(ret);

	}
@@ -195,8 +197,6 @@ int __init efi_runtime_map_init(struct kobject *efi_kobj) 
		entry = *(map_entries + j);

		kobject_put(&entry->kobj);

	}

	if (map_kset)

		kset_unregister(map_kset);

out:

	return ret;

}