From af1d5b37d6211c814fac0d5d0b71ec695618054a Mon Sep 17 00:00:00 2001 From: Al Viro Date: Tue, 27 Dec 2016 18:14:09 -0500 Subject: uaccess: drop duplicate includes from asm/uaccess.h Signed-off-by: Al Viro --- arch/unicore32/include/asm/uaccess.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'arch/unicore32') diff --git a/arch/unicore32/include/asm/uaccess.h b/arch/unicore32/include/asm/uaccess.h index 897e11ad8124..1622f37a0514 100644 --- a/arch/unicore32/include/asm/uaccess.h +++ b/arch/unicore32/include/asm/uaccess.h @@ -12,9 +12,6 @@ #ifndef __UNICORE_UACCESS_H__ #define __UNICORE_UACCESS_H__ -#include -#include - #include #define __copy_from_user __copy_from_user -- cgit v1.2.1 From 9849a5697d3defb2087cb6b9be5573a142697889 Mon Sep 17 00:00:00 2001 From: "Kirill A. Shutemov" Date: Thu, 9 Mar 2017 17:24:05 +0300 Subject: arch, mm: convert all architectures to use 5level-fixup.h If an architecture uses 4level-fixup.h we don't need to do anything as it includes 5level-fixup.h. If an architecture uses pgtable-nop*d.h, define __ARCH_USE_5LEVEL_HACK before inclusion of the header. It makes asm-generic code to use 5level-fixup.h. If an architecture has 4-level paging or folds levels on its own, include 5level-fixup.h directly. Signed-off-by: Kirill A. Shutemov Acked-by: Michal Hocko Signed-off-by: Linus Torvalds --- arch/unicore32/include/asm/pgtable.h | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/unicore32') diff --git a/arch/unicore32/include/asm/pgtable.h b/arch/unicore32/include/asm/pgtable.h index 818d0f5598e3..a4f2bef37e70 100644 --- a/arch/unicore32/include/asm/pgtable.h +++ b/arch/unicore32/include/asm/pgtable.h @@ -12,6 +12,7 @@ #ifndef __UNICORE_PGTABLE_H__ #define __UNICORE_PGTABLE_H__ +#define __ARCH_USE_5LEVEL_HACK #include #include -- cgit v1.2.1 From aaa2e7ac80f679230faf28a8e12e8d68dbe977eb Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 25 Dec 2016 01:22:09 -0500 Subject: add asm-generic/extable.h ... and make the users of generic uaccess.h use that. Signed-off-by: Al Viro --- arch/unicore32/include/asm/Kbuild | 1 + arch/unicore32/include/asm/uaccess.h | 2 -- 2 files changed, 1 insertion(+), 2 deletions(-) (limited to 'arch/unicore32') diff --git a/arch/unicore32/include/asm/Kbuild b/arch/unicore32/include/asm/Kbuild index 84205fe1cd79..e9ad511c1043 100644 --- a/arch/unicore32/include/asm/Kbuild +++ b/arch/unicore32/include/asm/Kbuild @@ -10,6 +10,7 @@ generic-y += div64.h generic-y += emergency-restart.h generic-y += errno.h generic-y += exec.h +generic-y += extable.h generic-y += fb.h generic-y += fcntl.h generic-y += ftrace.h diff --git a/arch/unicore32/include/asm/uaccess.h b/arch/unicore32/include/asm/uaccess.h index 1622f37a0514..f60fab718b59 100644 --- a/arch/unicore32/include/asm/uaccess.h +++ b/arch/unicore32/include/asm/uaccess.h @@ -38,6 +38,4 @@ __strnlen_user(const char __user *s, long n); #include -extern int fixup_exception(struct pt_regs *regs); - #endif /* __UNICORE_UACCESS_H__ */ -- cgit v1.2.1 From db68ce10c4f0a27c1ff9fa0e789e5c41f8c4ea63 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Mon, 20 Mar 2017 21:08:07 -0400 Subject: new helper: uaccess_kernel() Signed-off-by: Al Viro --- arch/unicore32/include/asm/uaccess.h | 2 +- arch/unicore32/kernel/process.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'arch/unicore32') diff --git a/arch/unicore32/include/asm/uaccess.h b/arch/unicore32/include/asm/uaccess.h index f60fab718b59..1196c88c2f9b 100644 --- a/arch/unicore32/include/asm/uaccess.h +++ b/arch/unicore32/include/asm/uaccess.h @@ -20,7 +20,7 @@ #define __strnlen_user __strnlen_user #define __clear_user __clear_user -#define __kernel_ok (segment_eq(get_fs(), KERNEL_DS)) +#define __kernel_ok (uaccess_kernel()) #define __user_ok(addr, size) (((size) <= TASK_SIZE) \ && ((addr) <= TASK_SIZE - (size))) #define __access_ok(addr, size) (__kernel_ok || __user_ok((addr), (size))) diff --git a/arch/unicore32/kernel/process.c b/arch/unicore32/kernel/process.c index d22c1dc7e39e..ddaf78ae6854 100644 --- a/arch/unicore32/kernel/process.c +++ b/arch/unicore32/kernel/process.c @@ -178,7 +178,7 @@ void __show_regs(struct pt_regs *regs) buf, interrupts_enabled(regs) ? "n" : "ff", fast_interrupts_enabled(regs) ? "n" : "ff", processor_modes[processor_mode(regs)], - segment_eq(get_fs(), get_ds()) ? "kernel" : "user"); + uaccess_kernel() ? "kernel" : "user"); { unsigned int ctrl; -- cgit v1.2.1 From 3fb50075284433093eba7c43e75b16eaa36eeabd Mon Sep 17 00:00:00 2001 From: Al Viro Date: Tue, 28 Mar 2017 00:51:43 -0400 Subject: asm-generic/uaccess.h: don't mess with __copy_{to,from}_user only h8300 actually used those; might as well define them there. Signed-off-by: Al Viro --- arch/unicore32/include/asm/uaccess.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'arch/unicore32') diff --git a/arch/unicore32/include/asm/uaccess.h b/arch/unicore32/include/asm/uaccess.h index 1196c88c2f9b..b2bcab69dfee 100644 --- a/arch/unicore32/include/asm/uaccess.h +++ b/arch/unicore32/include/asm/uaccess.h @@ -14,8 +14,6 @@ #include -#define __copy_from_user __copy_from_user -#define __copy_to_user __copy_to_user #define __strncpy_from_user __strncpy_from_user #define __strnlen_user __strnlen_user #define __clear_user __clear_user -- cgit v1.2.1 From 2ef59f28567f8a5d66dccc0e6a99a1bd655fd605 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Tue, 28 Mar 2017 01:37:07 -0400 Subject: unicore32: get rid of zeroing and switch to RAW_COPY_USER Signed-off-by: Al Viro --- arch/unicore32/Kconfig | 1 + arch/unicore32/include/asm/uaccess.h | 6 ++++-- arch/unicore32/kernel/ksyms.c | 4 ++-- arch/unicore32/lib/copy_from_user.S | 16 ++++++---------- arch/unicore32/lib/copy_to_user.S | 6 +++--- 5 files changed, 16 insertions(+), 17 deletions(-) (limited to 'arch/unicore32') diff --git a/arch/unicore32/Kconfig b/arch/unicore32/Kconfig index 0769066929c6..319519eaed24 100644 --- a/arch/unicore32/Kconfig +++ b/arch/unicore32/Kconfig @@ -18,6 +18,7 @@ config UNICORE32 select ARCH_WANT_FRAME_POINTERS select GENERIC_IOMAP select MODULES_USE_ELF_REL + select ARCH_HAS_RAW_COPY_USER help UniCore-32 is 32-bit Instruction Set Architecture, including a series of low-power-consumption RISC chip diff --git a/arch/unicore32/include/asm/uaccess.h b/arch/unicore32/include/asm/uaccess.h index b2bcab69dfee..1d55f2f83759 100644 --- a/arch/unicore32/include/asm/uaccess.h +++ b/arch/unicore32/include/asm/uaccess.h @@ -24,15 +24,17 @@ #define __access_ok(addr, size) (__kernel_ok || __user_ok((addr), (size))) extern unsigned long __must_check -__copy_from_user(void *to, const void __user *from, unsigned long n); +raw_copy_from_user(void *to, const void __user *from, unsigned long n); extern unsigned long __must_check -__copy_to_user(void __user *to, const void *from, unsigned long n); +raw_copy_to_user(void __user *to, const void *from, unsigned long n); extern unsigned long __must_check __clear_user(void __user *addr, unsigned long n); extern unsigned long __must_check __strncpy_from_user(char *to, const char __user *from, unsigned long count); extern unsigned long __strnlen_user(const char __user *s, long n); +#define INLINE_COPY_FROM_USER +#define INLINE_COPY_TO_USER #include diff --git a/arch/unicore32/kernel/ksyms.c b/arch/unicore32/kernel/ksyms.c index 0323528a80fd..dcc72ee1fcdb 100644 --- a/arch/unicore32/kernel/ksyms.c +++ b/arch/unicore32/kernel/ksyms.c @@ -46,8 +46,8 @@ EXPORT_SYMBOL(__strncpy_from_user); EXPORT_SYMBOL(copy_page); -EXPORT_SYMBOL(__copy_from_user); -EXPORT_SYMBOL(__copy_to_user); +EXPORT_SYMBOL(raw_copy_from_user); +EXPORT_SYMBOL(raw_copy_to_user); EXPORT_SYMBOL(__clear_user); EXPORT_SYMBOL(__ashldi3); diff --git a/arch/unicore32/lib/copy_from_user.S b/arch/unicore32/lib/copy_from_user.S index ab0767ea5dbd..5f80fcbe8631 100644 --- a/arch/unicore32/lib/copy_from_user.S +++ b/arch/unicore32/lib/copy_from_user.S @@ -16,7 +16,7 @@ /* * Prototype: * - * size_t __copy_from_user(void *to, const void *from, size_t n) + * size_t raw_copy_from_user(void *to, const void *from, size_t n) * * Purpose: * @@ -87,22 +87,18 @@ .text -ENTRY(__copy_from_user) +ENTRY(raw_copy_from_user) #include "copy_template.S" -ENDPROC(__copy_from_user) +ENDPROC(raw_copy_from_user) .pushsection .fixup,"ax" .align 0 copy_abort_preamble - ldm.w (r1, r2), [sp]+ - sub r3, r0, r1 - rsub r2, r3, r2 - stw r2, [sp] - mov r1, #0 - b.l memset - ldw.w r0, [sp]+, #4 + ldm.w (r1, r2, r3), [sp]+ + sub r0, r0, r1 + rsub r0, r0, r2 copy_abort_end .popsection diff --git a/arch/unicore32/lib/copy_to_user.S b/arch/unicore32/lib/copy_to_user.S index 6e22151c840d..857c6816ffe7 100644 --- a/arch/unicore32/lib/copy_to_user.S +++ b/arch/unicore32/lib/copy_to_user.S @@ -16,7 +16,7 @@ /* * Prototype: * - * size_t __copy_to_user(void *to, const void *from, size_t n) + * size_t raw_copy_to_user(void *to, const void *from, size_t n) * * Purpose: * @@ -79,11 +79,11 @@ .text -WEAK(__copy_to_user) +WEAK(raw_copy_to_user) #include "copy_template.S" -ENDPROC(__copy_to_user) +ENDPROC(raw_copy_to_user) .pushsection .fixup,"ax" .align 0 -- cgit v1.2.1