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path: root/arch/x86/kernel/kvmclock.c
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* x86: KVM guest: use paravirt function to calculate cpu khzGlauber Costa2008-10-151-0/+30
| | | | | | | | | | | | | | We're currently facing timing problems in guests that do calibration under heavy load, and then the load vanishes. This means we'll have a much lower lpj than we actually should, and delays end up taking less time than they should, which is a nasty bug. Solution is to pass on the lpj value from host to guest, and have it preset. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
* x86: KVM guest: make kvm_smp_prepare_boot_cpu() staticAdrian Bunk2008-07-201-1/+1
| | | | | | | This patch makes the needlessly global kvm_smp_prepare_boot_cpu() static. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Avi Kivity <avi@qumranet.com>
* x86: KVM guest: Use the paravirt clocksource structs and functionsGerd Hoffmann2008-06-241-56/+33
| | | | | | | | | | | | | 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 <kraxel@redhat.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
* namespacecheck: automated fixesIngo Molnar2008-05-231-2/+2
| | | | Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: KVM geust: make setup_secondary_clock definition dependent on local apicGlauber Costa2008-05-041-0/+4
| | | | | | | | 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 <gcosta@redhat.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
* x86: KVM guest: disable clock before rebooting.Glauber Costa2008-04-271-0/+27
| | | | | | | | | | | | | | | 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 <gcosta@redhat.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
* x86: KVM guest: paravirtualized clocksourceGlauber de Oliveira Costa2008-04-271-0/+160
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 <gcosta@redhat.com> Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
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