From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qg0-f49.google.com (mail-qg0-f49.google.com [209.85.192.49]) by kanga.kvack.org (Postfix) with ESMTP id 2DBE06B0038 for ; Tue, 15 Sep 2015 16:02:56 -0400 (EDT) Received: by qgt47 with SMTP id 47so153271879qgt.2 for ; Tue, 15 Sep 2015 13:02:55 -0700 (PDT) Received: from mail.linuxfoundation.org (mail.linuxfoundation.org. [140.211.169.12]) by mx.google.com with ESMTPS id y45si18393725qgd.42.2015.09.15.13.02.55 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 15 Sep 2015 13:02:55 -0700 (PDT) Date: Tue, 15 Sep 2015 13:02:53 -0700 From: Andrew Morton Subject: Re: [PATCH 12/12] userfaultfd: register uapi generic syscall (aarch64) Message-Id: <20150915130253.c1a0fbbab9ce93b38a2bfd43@linux-foundation.org> In-Reply-To: <1441745010-14314-13-git-send-email-aarcange@redhat.com> References: <1441745010-14314-1-git-send-email-aarcange@redhat.com> <1441745010-14314-13-git-send-email-aarcange@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Andrea Arcangeli Cc: linux-mm@kvack.org, Pavel Emelyanov , zhang.zhanghailiang@huawei.com, Dave Hansen , Rik van Riel , "Dr. David Alan Gilbert" , "Huangpeng (Peter)" , Michael Ellerman , Bamvor Zhang Jian , Bharata B Rao , Geert Uytterhoeven , Mathieu Desnoyers On Tue, 8 Sep 2015 22:43:30 +0200 Andrea Arcangeli wrote: > From: "Dr. David Alan Gilbert" > > Add the userfaultfd syscalls to uapi asm-generic, it was tested with > postcopy live migration on aarch64 with both 4k and 64k pagesize kernels. > > ... > > --- a/include/uapi/asm-generic/unistd.h > +++ b/include/uapi/asm-generic/unistd.h > @@ -709,9 +709,11 @@ __SYSCALL(__NR_memfd_create, sys_memfd_create) > __SYSCALL(__NR_bpf, sys_bpf) > #define __NR_execveat 281 > __SC_COMP(__NR_execveat, sys_execveat, compat_sys_execveat) > +#define __NR_userfaultfd 282 > +__SYSCALL(__NR_userfaultfd, sys_userfaultfd) > > #undef __NR_syscalls > -#define __NR_syscalls 282 > +#define __NR_syscalls 283 sys_membarrier got there first. Does this version look OK? From: "Dr. David Alan Gilbert" Subject: userfaultfd: register uapi generic syscall (aarch64) Add the userfaultfd syscalls to uapi asm-generic, it was tested with postcopy live migration on aarch64 with both 4k and 64k pagesize kernels. Signed-off-by: Dr. David Alan Gilbert Signed-off-by: Andrea Arcangeli Signed-off-by: Andrew Morton --- include/uapi/asm-generic/unistd.h | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff -puN include/uapi/asm-generic/unistd.h~userfaultfd-register-uapi-generic-syscall-aarch64 include/uapi/asm-generic/unistd.h --- a/include/uapi/asm-generic/unistd.h~userfaultfd-register-uapi-generic-syscall-aarch64 +++ a/include/uapi/asm-generic/unistd.h @@ -709,17 +709,19 @@ __SYSCALL(__NR_memfd_create, sys_memfd_c __SYSCALL(__NR_bpf, sys_bpf) #define __NR_execveat 281 __SC_COMP(__NR_execveat, sys_execveat, compat_sys_execveat) -#define __NR_membarrier 282 +#define __NR_userfaultfd 282 +__SYSCALL(__NR_userfaultfd, sys_userfaultfd) +#define __NR_membarrier 283 __SYSCALL(__NR_membarrier, sys_membarrier) #undef __NR_syscalls -#define __NR_syscalls 283 +#define __NR_syscalls 284 /* * All syscalls below here should go away really, * these are provided for both review and as a porting * help for the C library version. -* + * * Last chance: are any of these important enough to * enable by default? */ _ -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org