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| author |   Arnd Bergmann <arnd@arndb.de> | 2022-02-11 17:26:42 +0100 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2022-02-25 09:36:06 +0100 |
| commit | 75d4d29549e54c61466d60336b1c6e3a5d28797c (patch) | |
| tree | 48442ed7077e34e60c9bc34438c11a804800d9fe /arch/sh/include/asm | |
| parent | sparc64: remove CONFIG_SET_FS support (diff) | |
| download | linux-dev-75d4d29549e54c61466d60336b1c6e3a5d28797c.tar.xz linux-dev-75d4d29549e54c61466d60336b1c6e3a5d28797c.zip | |
sh: remove CONFIG_SET_FS support
sh uses set_fs/get_fs only in one file, to handle address
errors in both user and kernel memory.
It already has an abstraction to differentiate between I/O
and memory, so adding a third class for kernel memory fits
into the same scheme and lets us kill off CONFIG_SET_FS.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/sh/include/asm')
| -rw-r--r-- | arch/sh/include/asm/processor.h | 1 | ||||
| -rw-r--r-- | arch/sh/include/asm/segment.h | 33 | ||||
| -rw-r--r-- | arch/sh/include/asm/thread_info.h | 2 | ||||
| -rw-r--r-- | arch/sh/include/asm/uaccess.h | 4 |
4 files changed, 0 insertions, 40 deletions
diff --git a/arch/sh/include/asm/processor.h b/arch/sh/include/asm/processor.h index 3820d698846e..85a6c1c3c16e 100644 --- a/arch/sh/include/asm/processor.h +++ b/arch/sh/include/asm/processor.h @@ -3,7 +3,6 @@ #define __ASM_SH_PROCESSOR_H #include <asm/cpu-features.h> -#include <asm/segment.h> #include <asm/cache.h> #ifndef __ASSEMBLY__ diff --git a/arch/sh/include/asm/segment.h b/arch/sh/include/asm/segment.h deleted file mode 100644 index 02e54a3335d6..000000000000 --- a/arch/sh/include/asm/segment.h +++ /dev/null @@ -1,33 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef __ASM_SH_SEGMENT_H -#define __ASM_SH_SEGMENT_H - -#ifndef __ASSEMBLY__ - -typedef struct { - unsigned long seg; -} mm_segment_t; - -#define MAKE_MM_SEG(s) ((mm_segment_t) { (s) }) - -/* - * The fs value determines whether argument validity checking should be - * performed or not. If get_fs() == USER_DS, checking is performed, with - * get_fs() == KERNEL_DS, checking is bypassed. - * - * For historical reasons, these macros are grossly misnamed. - */ -#define KERNEL_DS MAKE_MM_SEG(0xFFFFFFFFUL) -#ifdef CONFIG_MMU -#define USER_DS MAKE_MM_SEG(PAGE_OFFSET) -#else -#define USER_DS KERNEL_DS -#endif - -#define uaccess_kernel() (get_fs().seg == KERNEL_DS.seg) - -#define get_fs() (current_thread_info()->addr_limit) -#define set_fs(x) (current_thread_info()->addr_limit = (x)) - -#endif /* __ASSEMBLY__ */ -#endif /* __ASM_SH_SEGMENT_H */ diff --git a/arch/sh/include/asm/thread_info.h b/arch/sh/include/asm/thread_info.h index 598d0184ffea..b119b859a0a3 100644 --- a/arch/sh/include/asm/thread_info.h +++ b/arch/sh/include/asm/thread_info.h @@ -30,7 +30,6 @@ struct thread_info { __u32 status; /* thread synchronous flags */ __u32 cpu; int preempt_count; /* 0 => preemptable, <0 => BUG */ - mm_segment_t addr_limit; /* thread address space */ unsigned long previous_sp; /* sp of previous stack in case of nested IRQ stacks */ __u8 supervisor_stack[0]; @@ -58,7 +57,6 @@ struct thread_info { .status = 0, \ .cpu = 0, \ .preempt_count = INIT_PREEMPT_COUNT, \ - .addr_limit = KERNEL_DS, \ } /* how to get the current stack pointer from C */ diff --git a/arch/sh/include/asm/uaccess.h b/arch/sh/include/asm/uaccess.h index ccd219d74851..a79609eb14be 100644 --- a/arch/sh/include/asm/uaccess.h +++ b/arch/sh/include/asm/uaccess.h @@ -2,11 +2,7 @@ #ifndef __ASM_SH_UACCESS_H #define __ASM_SH_UACCESS_H -#include <asm/segment.h> #include <asm/extable.h> - -#define user_addr_max() (current_thread_info()->addr_limit.seg) - #include <asm-generic/access_ok.h> /* |