Re: [LTP] [PATCH] userfaultfd03.c: Require kernel 6.1

Ricardo Branco
2026-03-26T21:36:22Z

On 3/26/26 1:52 PM, Petr Vorel wrote:
> Required kernel functionality was added in kernel 6.1 (not 6.11)
> 2d5de004e009 ("userfaultfd: add /dev/userfaultfd for fine grained access control")
>
> Because it's a new kernel functionality which has not been backported to
> enterprise kernels we can simplify check with just .min_kver.
>
> Fixes: b63ab54aee ("userfaultfd: Do not use min_kver as gate for test")
> Signed-off-by: Petr Vorel <pvorel@suse.cz>
> ---
> Hi all,
>
> @Li I suppose RHEL kernel haven't backport this.
>
> Kind regards,
> Petr
>
> testcases/kernel/syscalls/userfaultfd/userfaultfd03.c | 11 +----------
> 1 file changed, 1 insertion(+), 10 deletions(-)
>
> diff --git a/testcases/kernel/syscalls/userfaultfd/userfaultfd03.c b/testcases/kernel/syscalls/userfaultfd/userfaultfd03.c
> index b65f39ecab..dd4354be6f 100644
> --- a/testcases/kernel/syscalls/userfaultfd/userfaultfd03.c
> +++ b/testcases/kernel/syscalls/userfaultfd/userfaultfd03.c
> @@ -24,15 +24,6 @@ static char *page;
> static void *copy_page;
> static int uffd;
>
> -static void setup(void)
> -{
> - if (access("/dev/userfaultfd", F_OK) != 0) {
> - int res = (tst_kvercmp(6, 1, 0) < 0) ? TCONF : TBROK;
> -
> - tst_brk(res, "/dev/userfaultfd not found");
> - }
> -}
> -
> static int open_userfaultfd(int flags)
> {
> int fd, fd2;
> @@ -127,8 +118,8 @@ static void run(void)
>
> static struct tst_test test = {
> .needs_root = 1,
> - .setup = setup,
> .test_all = run,
> + .min_kver = "6.1",
> .needs_kconfigs = (const char *[]) {
> "CONFIG_USERFAULTFD=y",
> NULL
Reviewed-by: Ricardo Branco <rbranco@suse.de>