Marcelo Tosatti d4acf7e7ab KVM: Fix race between timer migration and vcpu migration ...

A guest vcpu instance can be scheduled to a different physical CPU
between the test for KVM_REQ_MIGRATE_TIMER and local_irq_disable().

If that happens, the timer will only be migrated to the current pCPU on
the next exit, meaning that guest LAPIC timer event can be delayed until
a host interrupt is triggered.

Fix it by cancelling guest entry if any vcpu request is pending.  This
has the side effect of nicely consolidating vcpu->requests checks.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>

2008-06-24 12:16:52 +03:00

..

i8254.c

KVM: migrate PIT timer

2008-06-06 21:25:51 +03:00

i8254.h

KVM: Add reset support for in kernel PIT

2008-04-27 12:00:23 +03:00

i8259.c

KVM: Move arch dependent files to new directory arch/x86/kvm/

2008-01-30 18:01:18 +02:00

irq.c

KVM: migrate PIT timer

2008-06-06 21:25:51 +03:00

irq.h

KVM: migrate PIT timer

2008-06-06 21:25:51 +03:00

Kconfig

KVM: Add kvm trace userspace interface

2008-04-27 12:01:22 +03:00

kvm_svm.h

KVM: SVM: allocate the MSR permission map per VCPU

2008-04-27 11:53:21 +03:00

lapic.c

KVM: LAPIC: ignore pending timers if LVTT is disabled

2008-05-18 14:39:39 +03:00

lapic.h

KVM: Accelerated apic support

2008-01-30 18:01:20 +02:00

Makefile

KVM: Add kvm trace userspace interface

2008-04-27 12:01:22 +03:00

mmu.c

KVM: MMU: Fix is_empty_shadow_page() check

2008-06-06 21:36:33 +03:00

mmu.h

KVM: Add kvm_x86_ops get_tdp_level()

2008-05-04 14:44:34 +03:00

paging_tmpl.h

KVM: MMU: Fix printk() format string

2008-06-06 21:36:20 +03:00

svm.c

KVM: migrate PIT timer

2008-06-06 21:25:51 +03:00

svm.h

KVM: x86: hardware task switching support

2008-04-27 12:00:39 +03:00

tss.h

KVM: x86: hardware task switching support

2008-04-27 12:00:39 +03:00

vmx.c

KVM: VMX: Clear CR4.VMXE in hardware_disable

2008-06-06 21:30:20 +03:00

vmx.h

KVM: VMX: Enable EPT feature for KVM

2008-05-04 14:44:42 +03:00

x86_emulate.c

KVM: x86 emulator: fix hypercall return value on AMD

2008-06-06 21:08:25 +03:00

x86.c

KVM: Fix race between timer migration and vcpu migration

2008-06-24 12:16:52 +03:00