Hello Stephen, On Tue, Jul 28, 2015 at 04:00:15PM +1000, Stephen Rothwell wrote: > -359 i386 userfaultfd sys_userfaultfd > ++374 i386 userfaultfd sys_userfaultfd Do I understand correctly the syscall number of userfaultfd for x86 32bit has just changed from 359 to 374? Appreciated that you CCed me on such a relevant change to be sure I didn't miss it. Then the below is needed as well. One related question: is it ok to ship kernels in production right now with the userfaultfd syscall number 374 for x86 32bit ABI (after the above change) and 323 for x86-64 64bit ABI, with these syscalls number registered in linux-next or it may keep changing like it has just happened? I refer only to userfaultfd syscalls of x86 32bit and x86-64 64bit, not all other syscalls in linux-next. Of course, I know full well that the standard answer is no, and in fact the above is an expected and fine change. In other words what I'm really asking is if I wonder if I could get an agreement here that from now on, the syscall number of userfaultfd for x86 32bit and x86-64 64bit won't change anymore in linux-next and it's already reserved just like if it was already upstream. Again: I'd only seek such guarantee for the x86-64 64bit and x86 32bit ABIs (not any other arch, and not any other syscall). If I could get such a guarantee from you within the next week or two, that would avoid me complications and some work, so I thought it was worth asking. If it's not possible never mind. Thanks, Andrea === >From 873093c32b4b1d0b6c3f18ec1e52b56c24f67457 Mon Sep 17 00:00:00 2001 From: Andrea Arcangeli <aarcange@xxxxxxxxxx> Date: Wed, 29 Jul 2015 18:53:17 +0200 Subject: [PATCH] userfaultfd: selftest: update userfaultfd x86 32bit syscall number It changed as result of linux-next merge of other syscalls. Signed-off-by: Andrea Arcangeli <aarcange@xxxxxxxxxx> --- tools/testing/selftests/vm/userfaultfd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/vm/userfaultfd.c b/tools/testing/selftests/vm/userfaultfd.c index 0c0b839..76071b1 100644 --- a/tools/testing/selftests/vm/userfaultfd.c +++ b/tools/testing/selftests/vm/userfaultfd.c @@ -69,7 +69,7 @@ #ifdef __x86_64__ #define __NR_userfaultfd 323 #elif defined(__i386__) -#define __NR_userfaultfd 359 +#define __NR_userfaultfd 374 #elif defined(__powewrpc__) #define __NR_userfaultfd 364 #else -- To unsubscribe from this list: send the line "unsubscribe linux-next" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
