[PATCH 19/23] userfaultfd: activate syscall
From: Andrea Arcangeli <hidden>
Date: 2015-05-14 17:39:50
Also in:
kvm, linux-mm, lkml, qemu-devel
Subsystem:
abi/api, linux for powerpc (32-bit and 64-bit), the rest, x86 architecture (32-bit and 64-bit) · Maintainers:
Madhavan Srinivasan, Linus Torvalds, Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen
This activates the userfaultfd syscall. Signed-off-by: Andrea Arcangeli <redacted> --- arch/powerpc/include/asm/systbl.h | 1 + arch/powerpc/include/uapi/asm/unistd.h | 1 + arch/x86/syscalls/syscall_32.tbl | 1 + arch/x86/syscalls/syscall_64.tbl | 1 + include/linux/syscalls.h | 1 + kernel/sys_ni.c | 1 + 6 files changed, 6 insertions(+)
diff --git a/arch/powerpc/include/asm/systbl.h b/arch/powerpc/include/asm/systbl.h
index f1863a1..4741b15 100644
--- a/arch/powerpc/include/asm/systbl.h
+++ b/arch/powerpc/include/asm/systbl.h@@ -368,3 +368,4 @@ SYSCALL_SPU(memfd_create) SYSCALL_SPU(bpf) COMPAT_SYS(execveat) PPC64ONLY(switch_endian) +SYSCALL_SPU(userfaultfd)
diff --git a/arch/powerpc/include/uapi/asm/unistd.h b/arch/powerpc/include/uapi/asm/unistd.h
index e4aa173..6ad58d4 100644
--- a/arch/powerpc/include/uapi/asm/unistd.h
+++ b/arch/powerpc/include/uapi/asm/unistd.h@@ -386,5 +386,6 @@ #define __NR_bpf 361 #define __NR_execveat 362 #define __NR_switch_endian 363 +#define __NR_userfaultfd 364 #endif /* _UAPI_ASM_POWERPC_UNISTD_H_ */
diff --git a/arch/x86/syscalls/syscall_32.tbl b/arch/x86/syscalls/syscall_32.tbl
index ef8187f..dcc18ea 100644
--- a/arch/x86/syscalls/syscall_32.tbl
+++ b/arch/x86/syscalls/syscall_32.tbl@@ -365,3 +365,4 @@ 356 i386 memfd_create sys_memfd_create 357 i386 bpf sys_bpf 358 i386 execveat sys_execveat stub32_execveat +359 i386 userfaultfd sys_userfaultfd
diff --git a/arch/x86/syscalls/syscall_64.tbl b/arch/x86/syscalls/syscall_64.tbl
index 9ef32d5..81c4906 100644
--- a/arch/x86/syscalls/syscall_64.tbl
+++ b/arch/x86/syscalls/syscall_64.tbl@@ -329,6 +329,7 @@ 320 common kexec_file_load sys_kexec_file_load 321 common bpf sys_bpf 322 64 execveat stub_execveat +323 common userfaultfd sys_userfaultfd # # x32-specific system call numbers start at 512 to avoid cache impact
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index bb51bec..8ee1d0c 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h@@ -810,6 +810,7 @@ asmlinkage long sys_timerfd_gettime(int ufd, struct itimerspec __user *otmr); asmlinkage long sys_eventfd(unsigned int count); asmlinkage long sys_eventfd2(unsigned int count, int flags); asmlinkage long sys_memfd_create(const char __user *uname_ptr, unsigned int flags); +asmlinkage long sys_userfaultfd(int flags); asmlinkage long sys_fallocate(int fd, int mode, loff_t offset, loff_t len); asmlinkage long sys_old_readdir(unsigned int, struct old_linux_dirent __user *, unsigned int); asmlinkage long sys_pselect6(int, fd_set __user *, fd_set __user *,
diff --git a/kernel/sys_ni.c b/kernel/sys_ni.c
index 7995ef5..8b3e10ea 100644
--- a/kernel/sys_ni.c
+++ b/kernel/sys_ni.c@@ -218,6 +218,7 @@ cond_syscall(compat_sys_timerfd_gettime); cond_syscall(sys_eventfd); cond_syscall(sys_eventfd2); cond_syscall(sys_memfd_create); +cond_syscall(sys_userfaultfd); /* performance counters: */ cond_syscall(sys_perf_event_open); --
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