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Filename Latest commit message Latest commit date
Christoffer Dall 4a2c4da125 arm/arm64: KVM: Load the timer state when enabling the timer
After being lazy with saving/restoring the timer state, we defer that
work to vcpu_load and vcpu_put, which ensure that the timer state is
loaded on the hardware timers whenever the VCPU runs.

Unfortunately, we are failing to do that the first time vcpu_load()
runs, because the timer has not yet been enabled at that time.  As long
as the initialized timer state matches what happens to be in the
hardware (a disabled timer, because we never leave the timer screaming),
this does not show up as a problem, but is nevertheless incorrect.

The solution is simple; disable preemption while setting the timer to be
enabled, and call the timer load function when first enabling the timer.

Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
2017-11-06 16:23:17 +01:00
arch KVM: arm/arm64: Use kvm_arm_timer_set/get_reg for guest register traps 2017-11-06 16:23:15 +01:00
block
certs
crypto
Documentation Merge branch 'i2c/for-current-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2017-10-07 10:07:51 -07:00
drivers KVM: arm/arm64: Check that system supports split eoi/deactivate 2017-11-06 16:23:10 +01:00
firmware
fs Changes since last update: 2017-10-06 15:53:36 -07:00
include KVM: arm/arm64: Rework kvm_timer_should_fire 2017-11-06 16:23:17 +01:00
init
ipc
kernel Merge branch 'core-watchdog-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-10-06 08:36:41 -07:00
lib
mm
net
samples
scripts
security
sound
tools
usr
virt arm/arm64: KVM: Load the timer state when enabling the timer 2017-11-06 16:23:17 +01:00
.cocciconfig
.get_maintainer.ignore
.gitattributes
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COPYING
CREDITS
Kbuild
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MAINTAINERS ARC udpates for 4.14-rc4 2017-10-06 15:57:08 -07:00
Makefile Linux 4.14-rc4 2017-10-08 20:53:29 -07:00
README

Linux kernel
============

This file was moved to Documentation/admin-guide/README.rst

Please notice that there are several guides for kernel developers and users.
These guides can be rendered in a number of formats, like HTML and PDF.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.