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arm64 fixes:

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- #ifdef CONFIG_EFI around __efi_fpsimd_begin/end
 
 - Assembly code alignment reduced to 4 bytes from 16
 
 - Ensure the kernel is compiled for LP64 (there are some arm64 compilers
   around defaulting to ILP32)
 
 - Fix arm_pmu_acpi memory leak on the error path
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Catalin Marinas:

 - #ifdef CONFIG_EFI around __efi_fpsimd_begin/end

 - Assembly code alignment reduced to 4 bytes from 16

 - Ensure the kernel is compiled for LP64 (there are some arm64
   compilers around defaulting to ILP32)

 - Fix arm_pmu_acpi memory leak on the error path

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  drivers/perf: arm_pmu_acpi: Release memory obtained by kasprintf
  arm64: ensure the kernel is compiled for LP64
  arm64: relax assembly code alignment from 16 byte to 4 byte
  arm64: efi: Don't include EFI fpsimd save/restore code in non-EFI kernels
This commit is contained in:
Linus Torvalds 2017-09-22 13:01:16 -10:00
commit 4d9af76741
4 changed files with 12 additions and 2 deletions
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5
arch/arm64/Makefile
View File

@ -50,17 +50,22 @@ KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
KBUILD_CFLAGS += $(call cc-option, -mpc-relative-literal-loads)
KBUILD_AFLAGS += $(lseinstr) $(brokengasinst)
KBUILD_CFLAGS += $(call cc-option,-mabi=lp64)
KBUILD_AFLAGS += $(call cc-option,-mabi=lp64)
ifeq ($(CONFIG_CPU_BIG_ENDIAN), y)
KBUILD_CPPFLAGS += -mbig-endian
CHECKFLAGS += -D__AARCH64EB__
AS += -EB
LD += -EB
LDFLAGS += -maarch64linuxb
UTS_MACHINE := aarch64_be
else
KBUILD_CPPFLAGS += -mlittle-endian
CHECKFLAGS += -D__AARCH64EL__
AS += -EL
LD += -EL
LDFLAGS += -maarch64linux
UTS_MACHINE := aarch64
endif

4
arch/arm64/include/asm/linkage.h
View File

@ -1,7 +1,7 @@
#ifndef __ASM_LINKAGE_H
#define __ASM_LINKAGE_H
#define __ALIGN .align 4
#define __ALIGN_STR ".align 4"
#define __ALIGN .align 2
#define __ALIGN_STR ".align 2"
#endif

4
arch/arm64/kernel/fpsimd.c
View File

@ -321,6 +321,8 @@ void kernel_neon_end(void)
}
EXPORT_SYMBOL(kernel_neon_end);
#ifdef CONFIG_EFI
static DEFINE_PER_CPU(struct fpsimd_state, efi_fpsimd_state);
static DEFINE_PER_CPU(bool, efi_fpsimd_state_used);
@ -370,6 +372,8 @@ void __efi_fpsimd_end(void)
kernel_neon_end();
}
#endif /* CONFIG_EFI */
#endif /* CONFIG_KERNEL_MODE_NEON */
#ifdef CONFIG_CPU_PM

1
drivers/perf/arm_pmu_acpi.c
View File

@ -235,6 +235,7 @@ int arm_pmu_acpi_probe(armpmu_init_fn init_fn)
ret = armpmu_register(pmu);
if (ret) {
pr_warn("Failed to register PMU for CPU%d\n", cpu);
kfree(pmu->name);
return ret;
}
}