linux-dev/drivers/kvm/irq.c, branch master

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

2008-01-30T16:01:18Z

This paves the way for multiple architecture support. Note that while ioapic.c could potentially be shared with ia64, it is also moved. Signed-off-by: Avi Kivity

KVM: Portability: Split kvm_vcpu into arch dependent and independent parts (part 1)

2008-01-30T15:52:54Z

First step to split kvm_vcpu. Currently, we just use an macro to define the common fields in kvm_vcpu for all archs, and all archs need to define its own kvm_vcpu struct. Signed-off-by: Zhang Xiantao Signed-off-by: Avi Kivity

KVM: deliver PIC interrupt only to vcpu0

2007-10-13T08:18:26Z

This patch changes the PIC interrupts delivery. Now it is only delivered to vcpu0 when either condition is met (on vcpu0): 1. local APIC is hardware disabled 2. LVT0 is unmasked and configured to delivery mode ExtInt It fixes the 2x faster wall clock on x86_64 and SMP i386 Linux guests Signed-off-by: Eddie (Yaozu) Dong Signed-off-by: Qing He Signed-off-by: Avi Kivity

KVM: Keep track of missed timer irq injections

2007-10-13T08:18:26Z

APIC timer IRQ is set every time when a certain period expires at host time, but the guest may be descheduled at that time and thus the irq be overwritten by later fire. This patch keep track of firing irq numbers and decrease only when the IRQ is injected to guest or buffered in APIC. Signed-off-by: Yaozu (Eddie) Dong Signed-off-by: Qing He Signed-off-by: Avi Kivity

KVM: Emulate hlt in the kernel

2007-10-13T08:18:25Z

By sleeping in the kernel when hlt is executed, we simplify the in-kernel guest interrupt path considerably. Signed-off-by: Gregory Haskins Signed-off-by: Yaozu (Eddie) Dong Signed-off-by: Avi Kivity

KVM: In-kernel I/O APIC model

2007-10-13T08:18:25Z

This allows in-kernel host-side device drivers to raise guest interrupts without going to userspace. [avi: fix level-triggered interrupt redelivery on eoi] [avi: add missing #include] [avi: avoid redelivery of edge-triggered interrupt] [avi: implement polarity] [avi: don't deliver edge-triggered interrupts when unmasking] [avi: fix host oops on invalid guest access] Signed-off-by: Yaozu (Eddie) Dong Signed-off-by: Avi Kivity

KVM: Emulate local APIC in kernel

2007-10-13T08:18:25Z

Because lightweight exits (exits which don't involve userspace) are many times faster than heavyweight exits, it makes sense to emulate high usage devices in the kernel. The local APIC is one such device, especially for Windows and for SMP, so we add an APIC model to kvm. It also allows in-kernel host-side drivers to inject interrupts without going through userspace. [compile fix on i386 from Jindrich Makovicka] Signed-off-by: Yaozu (Eddie) Dong Signed-off-by: Qing He Signed-off-by: Avi Kivity

KVM: Add support for in-kernel PIC emulation

2007-10-13T08:18:24Z

Signed-off-by: Yaozu (Eddie) Dong Signed-off-by: Avi Kivity