The patch titled uml: deal with host time going backwards has been removed from the -mm tree. Its filename was uml-deal-with-host-time-going-backwards.patch This patch was dropped because it was merged into mainline or a subsystem tree The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: uml: deal with host time going backwards From: Jeff Dike <jdike@xxxxxxxxxxx> Protection against the host's time going backwards (eg, ntp activity on the host) by keeping track of the time at the last tick and if it's greater than the current time, keep time stopped until the host catches up. Cc: Nix <nix@xxxxxxxxxxxxx> Signed-off-by: Jeff Dike <jdike@xxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- arch/um/os-Linux/time.c | 7 +++++++ 1 file changed, 7 insertions(+) diff -puN arch/um/os-Linux/time.c~uml-deal-with-host-time-going-backwards arch/um/os-Linux/time.c --- a/arch/um/os-Linux/time.c~uml-deal-with-host-time-going-backwards +++ a/arch/um/os-Linux/time.c @@ -106,6 +106,10 @@ static void deliver_alarm(void) unsigned long long this_tick = os_nsecs(); int one_tick = UM_NSEC_PER_SEC / UM_HZ; + /* Protection against the host's time going backwards */ + if ((last_tick != 0) && (this_tick < last_tick)) + this_tick = last_tick; + if (last_tick == 0) last_tick = this_tick - one_tick; @@ -148,6 +152,9 @@ static int after_sleep_interval(struct t start_usecs = usec; start_usecs -= skew / UM_NSEC_PER_USEC; + if (start_usecs < 0) + start_usecs = 0; + tv = ((struct timeval) { .tv_sec = start_usecs / UM_USEC_PER_SEC, .tv_usec = start_usecs % UM_USEC_PER_SEC }); interval = ((struct itimerval) { { 0, usec }, tv }); _ Patches currently in -mm which might be from jdike@xxxxxxxxxxx are origin.patch linux-next.patch arch-um-kernel-irqc-clean-up-some-functions.patch arch-um-kernel-memc-remove-arch_validate.patch uml-make-several-more-things-static.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html