> On May 2, 2016, at 09:15, Roger Pau Monné <roy...@freebsd.org> wrote: > > Author: royger > Date: Mon May 2 16:15:28 2016 > New Revision: 298929 > URL: https://svnweb.freebsd.org/changeset/base/298929 > > Log: > xen/time: allow Dom0 to set the host time > > Dom0 should be able to set the host time. This is implemented by first > writing to the RTC (as would be done on bare metal), and then using the > XENPF_settime64 hypercall in order to force Xen to update the wallclock > shared page of all domains. > > Sponsored by: Citrix Systems R&D > > Modified: > head/sys/dev/xen/timer/timer.c > > Modified: head/sys/dev/xen/timer/timer.c > ============================================================================== > --- head/sys/dev/xen/timer/timer.c Mon May 2 16:14:55 2016 > (r298928) > +++ head/sys/dev/xen/timer/timer.c Mon May 2 16:15:28 2016 > (r298929) > @@ -53,6 +53,7 @@ __FBSDID("$FreeBSD$"); > #include <xen/hypervisor.h> > #include <xen/interface/io/xenbus.h> > #include <xen/interface/vcpu.h> > +#include <xen/error.h> > > #include <machine/cpu.h> > #include <machine/cpufunc.h> > @@ -63,6 +64,8 @@ __FBSDID("$FreeBSD$"); > > #include <dev/xen/timer/timer.h> > > +#include <isa/rtc.h> > + > #include "clock_if.h" > > static devclass_t xentimer_devclass; > @@ -211,11 +214,32 @@ xen_fetch_uptime(struct timespec *ts) > static int > xentimer_settime(device_t dev __unused, struct timespec *ts) > { > + struct xen_platform_op settime; > + int ret; > + > /* > * Don't return EINVAL here; just silently fail if the domain isn't > * privileged enough to set the TOD. > */ > - return (0); > + if (!xen_initial_domain()) > + return (0); > + > + /* Set the native RTC. */ > + atrtc_set(ts); > + > + settime.cmd = XENPF_settime64; > + settime.u.settime64.mbz = 0; > + settime.u.settime64.secs = ts->tv_sec; > + settime.u.settime64.nsecs = ts->tv_nsec; > + settime.u.settime64.system_time = > + xen_fetch_vcpu_time(DPCPU_GET(vcpu_info)); > + > + ret = HYPERVISOR_platform_op(&settime); > + ret = ret != 0 ? xen_translate_error(ret) : 0; > + if (ret != 0 && bootverbose) > + device_printf(dev, "failed to set Xen PV clock: %d\n", ret); > + > + return (ret); > }
This broke the build on i386 with clang: https://jenkins.freebsd.org/job/FreeBSD_HEAD_i386/3028/ _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
