linux.git/arch/x86/kernel/kvmclock.c, branch v2.6.26

x86: KVM guest: Use the paravirt clocksource structs and functions

2008-06-24T18:02:33+00:00

This patch updates the kvm host code to use the pvclock structs
and functions, thereby making it compatible with Xen.

The patch also fixes an initialization bug: on SMP systems the
per-cpu has two different locations early at boot and after CPU
bringup.  kvmclock must take that in account when registering the
physical address within the host.

Signed-off-by: Gerd Hoffmann 
Signed-off-by: Avi Kivity

namespacecheck: automated fixes

2008-05-23T12:08:06+00:00

Signed-off-by: Ingo Molnar

x86: KVM geust: make setup_secondary_clock definition dependent on local apic

2008-05-04T11:45:12+00:00

Since the pv_apic_ops are only present if CONFIG_X86_LOCAL_APIC is compiled
in, kvmclock failed to build without this option.  This patch fixes this.

Signed-off-by: Glauber Costa 
Signed-off-by: Avi Kivity

x86: KVM guest: disable clock before rebooting.

2008-04-27T09:00:31+00:00

This patch writes 0 (actually, what really matters is that the
LSB is cleared) to the system time msr before shutting down
the machine for kexec.

Without it, we can have a random memory location being written
when the guest comes back

It overrides the functions shutdown, used in the path of kernel_kexec() (sys.c)
and crash_shutdown, used in the path of crash_kexec() (kexec.c)

Signed-off-by: Glauber Costa 
Signed-off-by: Avi Kivity

x86: KVM guest: paravirtualized clocksource

2008-04-27T08:53:22+00:00

This is the guest part of kvm clock implementation
It does not do tsc-only timing, as tsc can have deltas
between cpus, and it did not seem worthy to me to keep
adjusting them.

We do use it, however, for fine-grained adjustment.

Other than that, time comes from the host.

[randy dunlap: add missing include]
[randy dunlap: disallow on Voyager or Visual WS]

Signed-off-by: Glauber de Oliveira Costa 
Signed-off-by: Randy Dunlap 
Signed-off-by: Avi Kivity