WSL2-Linux-Kernel/arch/x86/lguest
David Vrabel 3565184ed0 x86: Increase precision of x86_platform.get/set_wallclock()
All the virtualized platforms (KVM, lguest and Xen) have persistent
wallclocks that have more than one second of precision.

read_persistent_wallclock() and update_persistent_wallclock() allow
for nanosecond precision but their implementation on x86 with
x86_platform.get/set_wallclock() only allows for one second precision.
This means guests may see a wallclock time that is off by up to 1
second.

Make set_wallclock() and get_wallclock() take a struct timespec
parameter (which allows for nanosecond precision) so KVM and Xen
guests may start with a more accurate wallclock time and a Xen dom0
can maintain a more accurate wallclock for guests.

Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
2013-05-28 14:00:59 -07:00
..
Kconfig x86: Make Linux guest support optional 2013-03-04 13:14:25 -08:00
Makefile lguest: fix 'unhandled trap 13' with CONFIG_CC_STACKPROTECTOR 2009-06-04 11:50:06 -07:00
boot.c x86: Increase precision of x86_platform.get/set_wallclock() 2013-05-28 14:00:59 -07:00
i386_head.S lguest: Fix three simple typos in comments 2011-07-22 14:39:50 +09:30