The patch titled
Subject: userfaultfd: activate syscall
has been removed from the -mm tree. Its filename was
userfaultfd-activate-syscall.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Subject: userfaultfd: activate syscall
This activates the userfaultfd syscall.
[sfr@xxxxxxxxxxxxxxxx: activate syscall fix]
[akpm@xxxxxxxxxxxxxxxxxxxx: don't enable userfaultfd on powerpc]
Signed-off-by: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Acked-by: Pavel Emelyanov <xemul@xxxxxxxxxxxxx>
Cc: Sanidhya Kashyap <sanidhya.gatech@xxxxxxxxx>
Cc: zhang.zhanghailiang@xxxxxxxxxx
Cc: "Kirill A. Shutemov" <kirill@xxxxxxxxxxxxx>
Cc: Andres Lagar-Cavilla <andreslc@xxxxxxxxxx>
Cc: Dave Hansen <dave.hansen@xxxxxxxxx>
Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Cc: Rik van Riel <riel@xxxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxx>
Cc: Andy Lutomirski <luto@xxxxxxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Peter Feiner <pfeiner@xxxxxxxxxx>
Cc: "Dr. David Alan Gilbert" <dgilbert@xxxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: "Huangpeng (Peter)" <peter.huangpeng@xxxxxxxxxx>
Signed-off-by: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/x86/entry/syscalls/syscall_32.tbl | 1 +
arch/x86/entry/syscalls/syscall_64.tbl | 1 +
include/linux/syscalls.h | 1 +
kernel/sys_ni.c | 1 +
4 files changed, 4 insertions(+)
diff -puN arch/x86/entry/syscalls/syscall_32.tbl~userfaultfd-activate-syscall arch/x86/entry/syscalls/syscall_32.tbl
--- a/arch/x86/entry/syscalls/syscall_32.tbl~userfaultfd-activate-syscall
+++ a/arch/x86/entry/syscalls/syscall_32.tbl
@@ -380,3 +380,4 @@
371 i386 recvfrom sys_recvfrom compat_sys_recvfrom
372 i386 recvmsg sys_recvmsg compat_sys_recvmsg
373 i386 shutdown sys_shutdown
+374 i386 userfaultfd sys_userfaultfd
diff -puN arch/x86/entry/syscalls/syscall_64.tbl~userfaultfd-activate-syscall arch/x86/entry/syscalls/syscall_64.tbl
--- a/arch/x86/entry/syscalls/syscall_64.tbl~userfaultfd-activate-syscall
+++ a/arch/x86/entry/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 -puN include/linux/syscalls.h~userfaultfd-activate-syscall include/linux/syscalls.h
--- a/include/linux/syscalls.h~userfaultfd-activate-syscall
+++ a/include/linux/syscalls.h
@@ -810,6 +810,7 @@ asmlinkage long sys_timerfd_gettime(int
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 -puN kernel/sys_ni.c~userfaultfd-activate-syscall kernel/sys_ni.c
--- a/kernel/sys_ni.c~userfaultfd-activate-syscall
+++ a/kernel/sys_ni.c
@@ -219,6 +219,7 @@ 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);
_
Patches currently in -mm which might be from aarcange@xxxxxxxxxx are
userfaultfd-selftest-update-userfaultfd-x86-32bit-syscall-number.patch
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