kernel.git/include/linux/kvm.h, branch linux-2.6.30.y

KVM: Fix overlapping check for memory slots

2009-04-22T10:52:09Z

When checking for overlapping slots on registration of a new one, kvm currently also considers zero-length (ie. deleted) slots and rejects requests incorrectly. This finally denies user space from joining slots. Fix the check by skipping deleted slots and advertise this via a KVM_CAP_JOIN_MEMORY_REGIONS_WORKS. Cc: stable@kernel.org Signed-off-by: Jan Kiszka Signed-off-by: Avi Kivity

KVM: Correct deassign device ioctl to IOW

2009-03-24T09:03:15Z

It's IOR by mistake, so fix it before release. Signed-off-by: Sheng Yang Signed-off-by: Avi Kivity

KVM: define KVM_CAP_DEVICE_DEASSIGNMENT

2009-03-24T09:03:12Z

define KVM_CAP_DEVICE_DEASSIGNMENT and KVM_DEASSIGN_PCI_DEVICE for device deassignment. the ioctl has been already implemented in the commit: 0a920356748df4fb06e86c21c23d2ed6d31d37ad Acked-by: Mark McLoughlin Signed-off-by: Weidong Han Signed-off-by: Avi Kivity

KVM: Report IRQ injection status to userspace.

2009-03-24T09:03:11Z

IRQ injection status is either -1 (if there was no CPU found that should except the interrupt because IRQ was masked or ioapic was misconfigured or ...) or >= 0 in that case the number indicates to how many CPUs interrupt was injected. If the value is 0 it means that the interrupt was coalesced and probably should be reinjected. Signed-off-by: Gleb Natapov Signed-off-by: Avi Kivity

KVM: Use irq routing API for MSI

2009-03-24T09:03:09Z

Merge MSI userspace interface with IRQ routing table. Notice the API have been changed, and using IRQ routing table would be the only interface kvm-userspace supported. Signed-off-by: Sheng Yang Signed-off-by: Avi Kivity

KVM: Avoid using CONFIG_ in userspace visible headers

2009-03-24T09:03:06Z

Kconfig symbols are not available in userspace, and are not stripped by headers-install. Avoid their use by adding #defines in to suit each architecture. Signed-off-by: Avi Kivity

KVM: Userspace controlled irq routing

2009-03-24T09:03:06Z

Currently KVM has a static routing from GSI numbers to interrupts (namely, 0-15 are mapped 1:1 to both PIC and IOAPIC, and 16:23 are mapped 1:1 to the IOAPIC). This is insufficient for several reasons: - HPET requires non 1:1 mapping for the timer interrupt - MSIs need a new method to assign interrupt numbers and dispatch them - ACPI APIC mode needs to be able to reassign the PCI LINK interrupts to the ioapics This patch implements an interrupt routing table (as a linked list, but this can be easily changed) and a userspace interface to replace the table. The routing table is initialized according to the current hardwired mapping. Signed-off-by: Avi Kivity

KVM: Add support to disable MSI for assigned device

2009-03-24T09:03:02Z

MSI is always enabled by default for msi2intx=1. But if msi2intx=0, we have to disable MSI if guest require to do so. The patch also discard unnecessary msi2intx judgment if guest want to update MSI state. Notice KVM_DEV_IRQ_ASSIGN_MSI_ACTION is a mask which should cover all MSI related operations, though we only got one for now. Signed-off-by: Sheng Yang Signed-off-by: Avi Kivity

KVM: PIT: provide an option to disable interrupt reinjection

2009-03-24T09:02:55Z

Certain clocks (such as TSC) in older 2.6 guests overaccount for lost ticks, causing severe time drift. Interrupt reinjection magnifies the problem. Provide an option to disable it. [avi: allow room for expansion in case we want to disable reinjection of other timers] Signed-off-by: Marcelo Tosatti Signed-off-by: Avi Kivity

KVM: Advertise guest debug capability per-arch

2009-03-24T09:02:52Z

Limit KVM_CAP_SET_GUEST_DEBUG only to those archs (currently x86) that support it. This simplifies user space stub implementations. Signed-off-by: Jan Kiszka Signed-off-by: Avi Kivity