Commit 0d45dab6 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'arm64-stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-aarch64 

Pull ARM64 fixes/updates from Catalin Marinas:
 - Bug-fixes (get_user/put_user, incorrect register width for ASID,
   FPSIMD initialisation)
 - Kconfig clean-up
 - defconfig update

* tag 'arm64-stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-aarch64:
  arm64: Remove duplicate DEBUG_STACK_USAGE config
  arm64: include VIRTIO_{MMIO,BLK} in defconfig
  arm64: include EXT4 in defconfig
  arm64: fix possible invalid FPSIMD initialization state
  arm64: use correct register width when retrieving ASID
  arm64: avoid multiple evaluation of ptr in get_user/put_user()
parents 0bfdbf0e 09d3ce74

arch/arm64/Kconfig.debug

+0 −7
Original line number Diff line number Diff line
@@ -6,13 +6,6 @@ config FRAME_POINTER 
	bool

	default y



config DEBUG_STACK_USAGE

	bool "Enable stack utilization instrumentation"

	depends on DEBUG_KERNEL

	help

	  Enables the display of the minimum amount of free stack which each

	  task has ever had available in the sysrq-T output.



config EARLY_PRINTK

	bool "Early printk support"

	default y

arch/arm64/configs/defconfig

+4 −1
Original line number Diff line number Diff line
@@ -42,7 +42,7 @@ CONFIG_IP_PNP_BOOTP=y 
# CONFIG_WIRELESS is not set

CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"

CONFIG_DEVTMPFS=y

# CONFIG_BLK_DEV is not set

CONFIG_BLK_DEV=y

CONFIG_SCSI=y

# CONFIG_SCSI_PROC_FS is not set

CONFIG_BLK_DEV_SD=y
@@ -72,6 +72,7 @@ CONFIG_LOGO=y 
# CONFIG_IOMMU_SUPPORT is not set

CONFIG_EXT2_FS=y

CONFIG_EXT3_FS=y

CONFIG_EXT4_FS=y

# CONFIG_EXT3_DEFAULTS_TO_ORDERED is not set

# CONFIG_EXT3_FS_XATTR is not set

CONFIG_FUSE_FS=y
@@ -90,3 +91,5 @@ CONFIG_DEBUG_KERNEL=y 
CONFIG_DEBUG_INFO=y

# CONFIG_FTRACE is not set

CONFIG_ATOMIC64_SELFTEST=y

CONFIG_VIRTIO_MMIO=y

CONFIG_VIRTIO_BLK=y

arch/arm64/include/asm/uaccess.h

+6 −4
Original line number Diff line number Diff line
@@ -166,9 +166,10 @@ do { \ 


#define get_user(x, ptr)						\

({									\

	__typeof__(*(ptr)) __user *__p = (ptr);				\

	might_fault();							\

	access_ok(VERIFY_READ, (ptr), sizeof(*(ptr))) ?			\

		__get_user((x), (ptr)) :				\

	access_ok(VERIFY_READ, __p, sizeof(*__p)) ?			\

		__get_user((x), __p) :					\

		((x) = 0, -EFAULT);					\

})
@@ -227,9 +228,10 @@ do { \ 


#define put_user(x, ptr)						\

({									\

	__typeof__(*(ptr)) __user *__p = (ptr);				\

	might_fault();							\

	access_ok(VERIFY_WRITE, (ptr), sizeof(*(ptr))) ?		\

		__put_user((x), (ptr)) :				\

	access_ok(VERIFY_WRITE, __p, sizeof(*__p)) ?			\

		__put_user((x), __p) :					\

		-EFAULT;						\

})

arch/arm64/kernel/fpsimd.c

+2 −0
Original line number Diff line number Diff line
@@ -80,8 +80,10 @@ void fpsimd_thread_switch(struct task_struct *next) 


void fpsimd_flush_thread(void)

{

	preempt_disable();

	memset(&current->thread.fpsimd_state, 0, sizeof(struct fpsimd_state));

	fpsimd_load_state(&current->thread.fpsimd_state);

	preempt_enable();

}



#ifdef CONFIG_KERNEL_MODE_NEON

arch/arm64/mm/tlb.S

+1 −1
Original line number Diff line number Diff line
@@ -35,7 +35,7 @@ 
 */

ENTRY(__cpu_flush_user_tlb_range)

	vma_vm_mm x3, x2			// get vma->vm_mm

	mmid	x3, x3				// get vm_mm->context.id

	mmid	w3, x3				// get vm_mm->context.id

	dsb	sy

	lsr	x0, x0, #12			// align address

	lsr	x1, x1, #12

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