Commit Graph

18 Commits

Author SHA1 Message Date
Avi Kivity
bfd99ff5d4 KVM: Move assigned device code to own file
Signed-off-by: Avi Kivity <avi@redhat.com>
2009-12-03 09:32:09 +02:00
Avi Kivity
56e8231841 KVM: Rename x86_emulate.c to emulate.c
We're in arch/x86, what could we possibly be emulating?

Signed-off-by: Avi Kivity <avi@redhat.com>
2009-09-10 10:46:45 +03:00
Marcelo Tosatti
2023a29cbe KVM: remove old KVMTRACE support code
Return EOPNOTSUPP for KVM_TRACE_ENABLE/PAUSE/DISABLE ioctls.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2009-09-10 08:33:03 +03:00
Marcelo Tosatti
229456fc34 KVM: convert custom marker based tracing to event traces
This allows use of the powerful ftrace infrastructure.

See Documentation/trace/ for usage information.

[avi, stephen: various build fixes]
[sheng: fix control register breakage]

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2009-09-10 08:32:59 +03:00
Gregory Haskins
721eecbf4f KVM: irqfd
KVM provides a complete virtual system environment for guests, including
support for injecting interrupts modeled after the real exception/interrupt
facilities present on the native platform (such as the IDT on x86).
Virtual interrupts can come from a variety of sources (emulated devices,
pass-through devices, etc) but all must be injected to the guest via
the KVM infrastructure.  This patch adds a new mechanism to inject a specific
interrupt to a guest using a decoupled eventfd mechnanism:  Any legal signal
on the irqfd (using eventfd semantics from either userspace or kernel) will
translate into an injected interrupt in the guest at the next available
interrupt window.

Signed-off-by: Gregory Haskins <ghaskins@novell.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2009-09-10 08:32:41 +03:00
Christoph Hellwig
284e9b0f5a KVM: cleanup arch/x86/kvm/Makefile
Use proper foo-y style list additions to cleanup all the conditionals,
move module selection after compound object selection and remove the
superflous comment.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
2009-09-10 08:32:40 +03:00
Marcelo Tosatti
d3c7b77d1a KVM: unify part of generic timer handling
Hide the internals of vcpu awakening / injection from the in-kernel
emulated timers. This makes future changes in this logic easier and
decreases the distance to more generic timer handling.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2009-06-10 11:48:25 +03:00
Joerg Roedel
19de40a847 KVM: change KVM to use IOMMU API
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:11:07 +01:00
Joerg Roedel
c4fa386428 KVM: rename vtd.c to iommu.c
Impact: file renamed

The code in the vtd.c file can be reused for other IOMMUs as well. So
rename it to make it clear that it handle more than VT-d.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-01-03 14:10:09 +01:00
Xiantao Zhang
3de42dc094 KVM: Separate irq ack notification out of arch/x86/kvm/irq.c
Moving irq ack notification logic as common, and make
it shared with ia64 side.

Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-10-15 14:25:35 +02:00
Zhang xiantao
371c01b28e KVM: Device Assignment: Move vtd.c from arch/x86/kvm/ to virt/kvm/
Preparation for kvm/ia64 VT-d support.

Signed-off-by: Zhang xiantao <xiantao.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-10-15 14:25:32 +02:00
Ben-Ami Yassour
62c476c7c7 KVM: Device Assignment with VT-d
Based on a patch by: Kay, Allen M <allen.m.kay@intel.com>

This patch enables PCI device assignment based on VT-d support.
When a device is assigned to the guest, the guest memory is pinned and
the mapping is updated in the VT-d IOMMU.

[Amit: Expose KVM_CAP_IOMMU so we can check if an IOMMU is present
and also control enable/disable from userspace]

Signed-off-by: Kay, Allen M <allen.m.kay@intel.com>
Signed-off-by: Weidong Han <weidong.han@intel.com>
Signed-off-by: Ben-Ami Yassour <benami@il.ibm.com>
Signed-off-by: Amit Shah <amit.shah@qumranet.com>

Acked-by: Mark Gross <mgross@linux.intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-10-15 14:25:04 +02:00
Laurent Vivier
542472b53e KVM: Add coalesced MMIO support (x86 part)
This patch enables coalesced MMIO for x86 architecture.
It defines KVM_MMIO_PAGE_OFFSET and KVM_CAP_COALESCED_MMIO.
It enables the compilation of coalesced_mmio.c.

Signed-off-by: Laurent Vivier <Laurent.Vivier@bull.net>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-07-20 12:42:31 +03:00
Feng(Eric) Liu
d4c9ff2d1b KVM: Add kvm trace userspace interface
This interface allows user a space application to read the trace of kvm
related events through relayfs.

Signed-off-by: Feng (Eric) Liu <eric.e.liu@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27 12:01:22 +03:00
Sheng Yang
7837699fa6 KVM: In kernel PIT model
The patch moves the PIT model from userspace to kernel, and increases
the timer accuracy greatly.

[marcelo: make last_injected_time per-guest]

Signed-off-by: Sheng Yang <sheng.yang@intel.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Tested-and-Acked-by: Alex Davis <alex14641@yahoo.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-04-27 12:00:21 +03:00
Zhang Xiantao
0eb8f49848 KVM: Move ioapic code to common directory.
Move ioapic code to common, since IA64 also needs it.

Signed-off-by: Zhang Xiantao <xiantao.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30 18:01:19 +02:00
Avi Kivity
0fce5623ba KVM: Move drivers/kvm/* to virt/kvm/
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-30 18:01:18 +02:00
Avi Kivity
edf884172e KVM: Move arch dependent files to new directory arch/x86/kvm/
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 <avi@qumranet.com>
2008-01-30 18:01:18 +02:00