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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-09-20 11:42:07 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-09-20 11:42:07 -0700 |
| commit | 8c2b418c3f95a488f5226870eee68574d323f0f8 (patch) | |
| tree | a041dab57d5f6a20f7fe0faf8076978a40107c44 /arch | |
| parent | bb736a5c0e9a2605f11c2bbb60a68f757832da32 (diff) | |
| parent | 799c85105233514309b201a2d2d7a7934458c999 (diff) | |
| download | linux-8c2b418c3f95a488f5226870eee68574d323f0f8.tar.gz | |
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon: "We've had a few arm64 fixes trickle in this week. Nothing catastophic, but all things that should be addressed: - Fix clang build breakage with CONFIG_OPTIMIZE_INLINING=y - Fix compilation of pointer tagging selftest - Fix COND_SYSCALL definitions to work with CFI checks - Fix stale documentation reference in our Kconfig" * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: Fix reference to docs for ARM64_TAGGED_ADDR_ABI arm64: fix function types in COND_SYSCALL selftests, arm64: add kernel headers path for tags_test arm64: fix unreachable code issue with cmpxchg
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm64/Kconfig | 2 | ||||
| -rw-r--r-- | arch/arm64/include/asm/cmpxchg.h | 6 | ||||
| -rw-r--r-- | arch/arm64/include/asm/syscall_wrapper.h | 15 |
3 files changed, 16 insertions, 7 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 5e919afa3f62..37c610963eee 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -1135,7 +1135,7 @@ config ARM64_TAGGED_ADDR_ABI When this option is enabled, user applications can opt in to a relaxed ABI via prctl() allowing tagged addresses to be passed to system calls as pointer arguments. For details, see - Documentation/arm64/tagged-address-abi.txt. + Documentation/arm64/tagged-address-abi.rst. menuconfig COMPAT bool "Kernel support for 32-bit EL0" diff --git a/arch/arm64/include/asm/cmpxchg.h b/arch/arm64/include/asm/cmpxchg.h index a1398f2f9994..f9bef42c1411 100644 --- a/arch/arm64/include/asm/cmpxchg.h +++ b/arch/arm64/include/asm/cmpxchg.h @@ -62,7 +62,7 @@ __XCHG_CASE( , , mb_, 64, dmb ish, nop, , a, l, "memory") #undef __XCHG_CASE #define __XCHG_GEN(sfx) \ -static inline unsigned long __xchg##sfx(unsigned long x, \ +static __always_inline unsigned long __xchg##sfx(unsigned long x, \ volatile void *ptr, \ int size) \ { \ @@ -148,7 +148,7 @@ __CMPXCHG_DBL(_mb) #undef __CMPXCHG_DBL #define __CMPXCHG_GEN(sfx) \ -static inline unsigned long __cmpxchg##sfx(volatile void *ptr, \ +static __always_inline unsigned long __cmpxchg##sfx(volatile void *ptr, \ unsigned long old, \ unsigned long new, \ int size) \ @@ -255,7 +255,7 @@ __CMPWAIT_CASE( , , 64); #undef __CMPWAIT_CASE #define __CMPWAIT_GEN(sfx) \ -static inline void __cmpwait##sfx(volatile void *ptr, \ +static __always_inline void __cmpwait##sfx(volatile void *ptr, \ unsigned long val, \ int size) \ { \ diff --git a/arch/arm64/include/asm/syscall_wrapper.h b/arch/arm64/include/asm/syscall_wrapper.h index 507d0ee6bc69..06d880b3526c 100644 --- a/arch/arm64/include/asm/syscall_wrapper.h +++ b/arch/arm64/include/asm/syscall_wrapper.h @@ -8,6 +8,8 @@ #ifndef __ASM_SYSCALL_WRAPPER_H #define __ASM_SYSCALL_WRAPPER_H +struct pt_regs; + #define SC_ARM64_REGS_TO_ARGS(x, ...) \ __MAP(x,__SC_ARGS \ ,,regs->regs[0],,regs->regs[1],,regs->regs[2] \ @@ -35,8 +37,11 @@ ALLOW_ERROR_INJECTION(__arm64_compat_sys_##sname, ERRNO); \ asmlinkage long __arm64_compat_sys_##sname(const struct pt_regs *__unused) -#define COND_SYSCALL_COMPAT(name) \ - cond_syscall(__arm64_compat_sys_##name); +#define COND_SYSCALL_COMPAT(name) \ + asmlinkage long __weak __arm64_compat_sys_##name(const struct pt_regs *regs) \ + { \ + return sys_ni_syscall(); \ + } #define COMPAT_SYS_NI(name) \ SYSCALL_ALIAS(__arm64_compat_sys_##name, sys_ni_posix_timers); @@ -70,7 +75,11 @@ #endif #ifndef COND_SYSCALL -#define COND_SYSCALL(name) cond_syscall(__arm64_sys_##name) +#define COND_SYSCALL(name) \ + asmlinkage long __weak __arm64_sys_##name(const struct pt_regs *regs) \ + { \ + return sys_ni_syscall(); \ + } #endif #ifndef SYS_NI |