Commit 27549068 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux 

Pull arm64 fixes from Catalin Marinas:

 - Bring initialisation of user space undefined instruction handling
   early (core_initcall) since late_initcall() happens after modprobe in
   initramfs is invoked. Similar fix for fpsimd initialisation

 - Increase the kernel stack when KASAN is enabled

 - Bring the PCI ACS enabling earlier via the
   iort_init_platform_devices()

 - Fix misleading data abort address printing (decimal vs hex)

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: Ensure fpsimd support is ready before userspace is active
  arm64: Ensure the instruction emulation is ready for userspace
  arm64: Use larger stacks when KASAN is selected
  ACPI/IORT: Fix PCI ACS enablement
  arm64: fix misleading data abort decoding
parents 8d473320 ae2e972d

arch/arm64/include/asm/memory.h

+6 −3
Original line number Diff line number Diff line
@@ -95,16 +95,19 @@ 
#define KERNEL_END        _end



/*

 * The size of the KASAN shadow region. This should be 1/8th of the

 * size of the entire kernel virtual address space.

 * KASAN requires 1/8th of the kernel virtual address space for the shadow

 * region. KASAN can bloat the stack significantly, so double the (minimum)

 * stack size when KASAN is in use.

 */

#ifdef CONFIG_KASAN

#define KASAN_SHADOW_SIZE	(UL(1) << (VA_BITS - 3))

#define KASAN_THREAD_SHIFT	1

#else

#define KASAN_SHADOW_SIZE	(0)

#define KASAN_THREAD_SHIFT	0

#endif



#define MIN_THREAD_SHIFT	14

#define MIN_THREAD_SHIFT	(14 + KASAN_THREAD_SHIFT)



/*

 * VMAP'd stacks are allocated at page granularity, so we must ensure that such

arch/arm64/kernel/armv8_deprecated.c

+1 −1
Original line number Diff line number Diff line
@@ -649,4 +649,4 @@ static int __init armv8_deprecated_init(void) 
	return 0;

}



late_initcall(armv8_deprecated_init);
 
core_initcall(armv8_deprecated_init);

arch/arm64/kernel/cpufeature.c

+1 −1
Original line number Diff line number Diff line
@@ -1307,4 +1307,4 @@ static int __init enable_mrs_emulation(void) 
	return 0;

}



late_initcall(enable_mrs_emulation);
 
core_initcall(enable_mrs_emulation);

arch/arm64/kernel/fpsimd.c

+1 −1
Original line number Diff line number Diff line
@@ -444,4 +444,4 @@ static int __init fpsimd_init(void) 


	return 0;

}

late_initcall(fpsimd_init);
 
core_initcall(fpsimd_init);

arch/arm64/mm/fault.c

+1 −1
Original line number Diff line number Diff line
@@ -97,7 +97,7 @@ static void data_abort_decode(unsigned int esr) 
			 (esr & ESR_ELx_SF) >> ESR_ELx_SF_SHIFT,

			 (esr & ESR_ELx_AR) >> ESR_ELx_AR_SHIFT);

	} else {

		pr_alert("  ISV = 0, ISS = 0x%08lu\n", esr & ESR_ELx_ISS_MASK);

		pr_alert("  ISV = 0, ISS = 0x%08lx\n", esr & ESR_ELx_ISS_MASK);

	}



	pr_alert("  CM = %lu, WnR = %lu\n",

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