On 10/27/2014 09:30 PM, Thomas Gleixner wrote:
On Mon, 27 Oct 2014, Marc Zyngier wrote:
Hi Daniel,
On 21/10/14 12:12, Daniel Lezcano wrote:
On 10/21/2014 01:07 PM, Mark Rutland wrote:
Hi Daniel,
On Tue, Oct 21, 2014 at 11:58:29AM +0100, Daniel Lezcano wrote:
On 10/15/2014 05:06 PM, Marc Zyngier wrote:
Commit c387f07e6205 (clocksource: arm_arch_timer: Discard unavailable
timers correctly) changed the way the driver makes sure both the memory
and system-register timers have been probed before finalizing the probing.
There is a interesting flaw in this logic that leads to this final step
never to be executed. Things seems to work pretty well until something
actually needs the data that is produced during this final stage.
For example, KVM explodes on the first run of a guest when executed on
a platform that has both memory and sysreg nodes (Juno, for example).
Just fix the damned logic, and enjoy booting VMs again.
Tested on a Juno system.
Cc: Sudeep Holla <sudeep.holla@xxxxxxx>
Cc: Stephen Boyd <sboyd@xxxxxxxxxxxxxx>
Cc: Mark Rutland <mark.rutland@xxxxxxx>
Cc: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>
Cc: Christoffer Dall <christoffer.dall@xxxxxxxxxx>
Reported-by: Riku Voipio <riku.voipio@xxxxxxxxxx>
Signed-off-by: Marc Zyngier <marc.zyngier@xxxxxxx>
---
Applied to my tree. Also for -next.
Is this going to hit -rc2? This was a regression introduced in -rc1.
Without this fix we've also lost our high precision sched_clock on arm64
platforms.
Sure.
Thomas or Ingo,
is it possible to update the tip/urgent branch, so I can send the fixes
against 3.18-rc1 ?
Any update on this? -rc2 has landed, but arm/arm64 timers are still in a
rather bad shape. Can this please be merged as an urgent fix?
Daniel, timers/urgent is on rc1 already. Please send your pull request.
Hi Thomas,
This pull request for one patch contains a fix for ARM/ARM64 platform:
* Marc Zyngier fixed the probe logic for the ARM architected timers.
Thanks
-- Daniel
The following changes since commit 59aa896db80479dec29f471a7ca2b9eeeeb7d38e:
ARM/ARM64: arch-timer: fix arch_timer_probed logic (2014-10-26
20:50:00 +0100)
are available in the git repository at:
http://git.linaro.org/people/daniel.lezcano/linux.git
clockevents/3.18-fixes
for you to fetch changes up to 59aa896db80479dec29f471a7ca2b9eeeeb7d38e:
ARM/ARM64: arch-timer: fix arch_timer_probed logic (2014-10-26
20:50:00 +0100)
--
<http://www.linaro.org/> Linaro.org │ Open source software for ARM SoCs
Follow Linaro: <http://www.facebook.com/pages/Linaro> Facebook |
<http://twitter.com/#!/linaroorg> Twitter |
<http://www.linaro.org/linaro-blog/> Blog
_______________________________________________
kvmarm mailing list
kvmarm@xxxxxxxxxxxxxxxxxxxxx
https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
