From 4cfb36136480c029a29dbf63a623506e6ed7282b Mon Sep 17 00:00:00 2001 From: Ard Biesheuvel Date: Tue, 9 Jul 2013 14:18:12 +0100 Subject: arm64: add support for kernel mode NEON Add containing kernel_neon_begin/kernel_neon_end function declarations and corresponding definitions in fpsimd.c These are needed to wrap uses of NEON in kernel mode. The names are identical to the ones used in arm/ so code using intrinsics or vectorized by GCC can be shared between arm and arm64. Signed-off-by: Ard Biesheuvel Signed-off-by: Catalin Marinas --- arch/arm64/include/asm/neon.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) create mode 100644 arch/arm64/include/asm/neon.h (limited to 'arch/arm64/include/asm') diff --git a/arch/arm64/include/asm/neon.h b/arch/arm64/include/asm/neon.h new file mode 100644 index 000000000000..b0cc58a97780 --- /dev/null +++ b/arch/arm64/include/asm/neon.h @@ -0,0 +1,14 @@ +/* + * linux/arch/arm64/include/asm/neon.h + * + * Copyright (C) 2013 Linaro Ltd + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#define cpu_has_neon() (1) + +void kernel_neon_begin(void); +void kernel_neon_end(void); -- cgit v1.2.3 From 360b35a874f130305715b1b854b67dc40826fc91 Mon Sep 17 00:00:00 2001 From: Chen Gang Date: Wed, 21 Aug 2013 10:50:17 +0100 Subject: ARM64: include: asm: include "asm/types.h" in "pgtable-2level-types.h" and "pgtable-3level-types.h" MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Need include "asm/types.h", just like arm has done, or can not pass compiling, the related error: In file included from arch/arm64/include/asm/page.h:37:0, from drivers/staging/lustre/include/linux/lnet/linux/lib-lnet.h:42, from drivers/staging/lustre/include/linux/lnet/lib-lnet.h:44, from drivers/staging/lustre/lnet/lnet/api-ni.c:38: arch/arm64/include/asm/pgtable-2level-types.h:19:1: error: unknown type name ‘u64 arch/arm64/include/asm/pgtable-2level-types.h:20:1: error: unknown type name ‘u64’ Signed-off-by: Chen Gang Signed-off-by: Catalin Marinas --- arch/arm64/include/asm/pgtable-2level-types.h | 2 ++ arch/arm64/include/asm/pgtable-3level-types.h | 2 ++ 2 files changed, 4 insertions(+) (limited to 'arch/arm64/include/asm') diff --git a/arch/arm64/include/asm/pgtable-2level-types.h b/arch/arm64/include/asm/pgtable-2level-types.h index 3c3ca7d361e4..5f101e63dfc1 100644 --- a/arch/arm64/include/asm/pgtable-2level-types.h +++ b/arch/arm64/include/asm/pgtable-2level-types.h @@ -16,6 +16,8 @@ #ifndef __ASM_PGTABLE_2LEVEL_TYPES_H #define __ASM_PGTABLE_2LEVEL_TYPES_H +#include + typedef u64 pteval_t; typedef u64 pgdval_t; typedef pgdval_t pmdval_t; diff --git a/arch/arm64/include/asm/pgtable-3level-types.h b/arch/arm64/include/asm/pgtable-3level-types.h index 4489615f14a9..4e94424938a4 100644 --- a/arch/arm64/include/asm/pgtable-3level-types.h +++ b/arch/arm64/include/asm/pgtable-3level-types.h @@ -16,6 +16,8 @@ #ifndef __ASM_PGTABLE_3LEVEL_TYPES_H #define __ASM_PGTABLE_3LEVEL_TYPES_H +#include + typedef u64 pteval_t; typedef u64 pmdval_t; typedef u64 pgdval_t; -- cgit v1.2.3 From 909e3ee4119f87b85c6e1b8534b2287ed1ea3ca2 Mon Sep 17 00:00:00 2001 From: Dan Aloni Date: Wed, 28 Aug 2013 14:24:53 +0100 Subject: Move the EM_ARM and EM_AARCH64 definitions to uapi/linux/elf-em.h Signed-off-by: Dan Aloni Signed-off-by: Catalin Marinas --- arch/arm64/include/asm/elf.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'arch/arm64/include/asm') diff --git a/arch/arm64/include/asm/elf.h b/arch/arm64/include/asm/elf.h index fe32c0e4ac01..e7fa87f9201b 100644 --- a/arch/arm64/include/asm/elf.h +++ b/arch/arm64/include/asm/elf.h @@ -33,8 +33,6 @@ typedef unsigned long elf_greg_t; typedef elf_greg_t elf_gregset_t[ELF_NGREG]; typedef struct user_fpsimd_state elf_fpregset_t; -#define EM_AARCH64 183 - /* * AArch64 static relocation types. */ @@ -151,7 +149,6 @@ extern unsigned long arch_randomize_brk(struct mm_struct *mm); #define arch_randomize_brk arch_randomize_brk #ifdef CONFIG_COMPAT -#define EM_ARM 40 #define COMPAT_ELF_PLATFORM ("v8l") #define COMPAT_ELF_ET_DYN_BASE (randomize_et_dyn(2 * TASK_SIZE_32 / 3)) -- cgit v1.2.3 From d50240a5f6ceaf690a77b0fccb17be51cfa151c2 Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Wed, 12 Jun 2013 16:28:04 +0100 Subject: arm64: mm: permit use of tagged pointers at EL0 TCR.TBI0 can be used to cause hardware address translation to ignore the top byte of userspace virtual addresses. Whilst not especially useful in standard C programs, this can be used by JITs to `tag' pointers with various pieces of metadata. This patch enables this bit for AArch64 Linux, and adds a new file to Documentation/arm64/ which describes some potential caveats when using tagged virtual addresses. Signed-off-by: Will Deacon Signed-off-by: Catalin Marinas --- arch/arm64/include/asm/pgtable-hwdef.h | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/arm64/include/asm') diff --git a/arch/arm64/include/asm/pgtable-hwdef.h b/arch/arm64/include/asm/pgtable-hwdef.h index e182a356c979..d57e66845c86 100644 --- a/arch/arm64/include/asm/pgtable-hwdef.h +++ b/arch/arm64/include/asm/pgtable-hwdef.h @@ -122,5 +122,6 @@ #define TCR_TG1_64K (UL(1) << 30) #define TCR_IPS_40BIT (UL(2) << 32) #define TCR_ASID16 (UL(1) << 36) +#define TCR_TBI0 (UL(1) << 37) #endif -- cgit v1.2.3