On 2016-09-27 20:03, Greg KH wrote: > On Tue, Sep 27, 2016 at 05:12:12PM +0100, Marc Zyngier wrote: >> Greg, >> >> On Tue, 27 Sep 2016 16:27:57 +0200 >> <gregkh@xxxxxxxxxxxxxxxxxxx> wrote: >> >> > This is a note to let you know that I've just added the patch titled >> > >> > hrtimer: Add support for CLOCK_MONOTONIC_RAW >> > >> > to the 4.4-stable tree which can be found at: >> > http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary >> > >> > The filename of the patch is: >> > hrtimer-add-support-for-clock_monotonic_raw.patch >> > and it can be found in the queue-4.4 subdirectory. >> > >> > If you, or anyone else, feels it should not be added to the stable tree, >> > please let <stable@xxxxxxxxxxxxxxx> know about it. >> > >> > >> > From 9c808765e88efb6fa6af7e2206ef89512f1840a7 Mon Sep 17 00:00:00 2001 >> > From: Marc Zyngier <marc.zyngier@xxxxxxx> >> > Date: Fri, 15 Jan 2016 17:41:08 +0000 >> > Subject: hrtimer: Add support for CLOCK_MONOTONIC_RAW >> > >> > From: Marc Zyngier <marc.zyngier@xxxxxxx> >> > >> > commit 9c808765e88efb6fa6af7e2206ef89512f1840a7 upstream. >> > >> > The KVM/ARM timer implementation arms a hrtimer when a vcpu is >> > blocked (usually because it is waiting for an interrupt) >> > while its timer is going to kick in the future. >> > >> > It is essential that this timer doesn't get adjusted, or the >> > guest will end up being woken-up at the wrong time (NTP running >> > on the host seems to confuse the hell out of some guests). >> > >> > In order to allow this, let's add CLOCK_MONOTONIC_RAW support >> > to hrtimer (it is so far only supported for posix timers). It also >> > has the (limited) benefit of fixing de0421d53bfb ("mac80211_hwsim: >> > shuffle code to prepare for dynamic radios"), which already uses >> > this functionnality without realizing wasn't implemented (just being >> > lucky...). >> > >> > Signed-off-by: Marc Zyngier <marc.zyngier@xxxxxxx> >> > Cc: Tomasz Nowicki <tn@xxxxxxxxxxxx> >> > Cc: Christoffer Dall <christoffer.dall@xxxxxxxxxx> >> > Link: http://lkml.kernel.org/r/1452879670-16133-2-git-send-email-marc.zyngier@xxxxxxx >> > Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx> >> > Cc: Felix Fietkau <nbd@xxxxxxxx> >> > Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> >> >> Please drop that patch. It is utterly broken, and was reverted in >> mainline with commit 82e88ff1ea94 ("hrtimer: Revert CLOCK_MONOTONIC_RAW >> support"). >> > > Ok, will do. > > Felix, this kind of means this isn't the fix you were looking for, any > other ideas? I guess I can send a mac80211_hwpatch to switch to CLOCK_MONOTONIC instead and add Cc: stable. - Felix -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html