user/sven/linux.git/virt/kvm/assigned-dev.c, branch v3.0.63

KVM: Use pci_store/load_saved_state() around VM device usage

2011-05-21T19:17:10Z

Store the device saved state so that we can reload the device back to the original state when it's unassigned. This has the benefit that the state survives across pci_reset_function() calls via the PCI sysfs reset interface while the VM is using the device. Signed-off-by: Alex Williamson Acked-by: Avi Kivity Signed-off-by: Jesse Barnes

KVM: Clean up kvm_vm_ioctl_assigned_device

2011-01-12T09:29:24Z

Any arch not supporting device assigment will also not build assigned-dev.c. So testing for KVM_CAP_DEVICE_DEASSIGNMENT is pointless. KVM_CAP_ASSIGN_DEV_IRQ is unconditinally set. Moreover, add a default case for dispatching the ioctl. Acked-by: Alex Williamson Acked-by: Michael S. Tsirkin Signed-off-by: Jan Kiszka Signed-off-by: Marcelo Tosatti

KVM: Save/restore state of assigned PCI device

2011-01-12T09:29:22Z

The guest may change states that pci_reset_function does not touch. So we better save/restore the assigned device across guest usage. Acked-by: Alex Williamson Acked-by: Michael S. Tsirkin Signed-off-by: Jan Kiszka Signed-off-by: Marcelo Tosatti

KVM: Refactor IRQ names of assigned devices

2011-01-12T09:29:21Z

Cosmetic change, but it helps to correlate IRQs with PCI devices. Acked-by: Alex Williamson Acked-by: Michael S. Tsirkin Signed-off-by: Jan Kiszka Signed-off-by: Marcelo Tosatti

KVM: Switch assigned device IRQ forwarding to threaded handler

2011-01-12T09:29:20Z

This improves the IRQ forwarding for assigned devices: By using the kernel's threaded IRQ scheme, we can get rid of the latency-prone work queue and simplify the code in the same run. Moreover, we no longer have to hold assigned_dev_lock while raising the guest IRQ, which can be a lenghty operation as we may have to iterate over all VCPUs. The lock is now only used for synchronizing masking vs. unmasking of INTx-type IRQs, thus is renames to intx_lock. Acked-by: Alex Williamson Acked-by: Michael S. Tsirkin Signed-off-by: Jan Kiszka Signed-off-by: Marcelo Tosatti

KVM: Clear assigned guest IRQ on release

2011-01-12T09:29:19Z

When we deassign a guest IRQ, clear the potentially asserted guest line. There might be no chance for the guest to do this, specifically if we switch from INTx to MSI mode. Acked-by: Alex Williamson Acked-by: Michael S. Tsirkin Signed-off-by: Jan Kiszka Signed-off-by: Marcelo Tosatti

KVM: Fix unused but set warnings

2010-08-01T07:46:29Z

No real bugs in this one. Signed-off-by: Andi Kleen Signed-off-by: Avi Kivity

KVM: Update Red Hat copyrights

2010-08-01T07:35:51Z

Signed-off-by: Avi Kivity

KVM: remove CAP_SYS_RAWIO requirement from kvm_vm_ioctl_assign_irq

2010-08-01T07:35:45Z

Remove this check in an effort to allow kvm guests to run without root privileges. This capability check doesn't seem to add any security since the device needs to have already been added via the assign device ioctl and the io actually occurs through the pci sysfs interface. Signed-off-by: Alex Williamson Signed-off-by: Marcelo Tosatti

KVM: fix assigned_device_enable_host_msix error handling

2010-05-17T09:15:36Z

Free IRQ's and disable MSIX upon failure. Cc: Avi Kivity Signed-off-by: Jing Zhang Signed-off-by: Marcelo Tosatti