linux-toradex.git/arch/arm/kvm/Makefile, branch v3.17

KVM: ARM: vgic: split GICv2 backend from the main vgic code

2014-07-11T11:57:34+00:00

Brutally hack the innocent vgic code, and move the GICv2 specific code
to its own file, using vgic_ops and vgic_params as a way to pass
information between the two blocks.

Acked-by: Catalin Marinas 
Reviewed-by: Christoffer Dall 
Signed-off-by: Marc Zyngier

KVM: ARM: Add support for Cortex-A7

2013-10-13T00:45:30+00:00

This patch adds support for running Cortex-A7 guests on Cortex-A7 hosts.

As Cortex-A7 is architecturally compatible with A15, this patch is largely just
generalising existing code. Areas where 'implementation defined' behaviour
is identical for A7 and A15 is moved to allow it to be used by both cores.

The check to ensure that coprocessor register tables are sorted correctly is
also moved in to 'common' code to avoid each new cpu doing its own check
(and possibly forgetting to do so!)

Signed-off-by: Jonathan Austin 
Acked-by: Marc Zyngier 
Signed-off-by: Christoffer Dall

KVM: get rid of $(addprefix ../../../virt/kvm/, ...) in Makefiles

2013-05-19T12:14:00+00:00

As requested by the KVM maintainers, remove the addprefix used to
refer to the main KVM code from the arch code, and replace it with
a KVM variable that does the same thing.

Tested-by: Christian Borntraeger 
Cc: Paolo Bonzini 
Cc: Gleb Natapov 
Cc: Christoffer Dall 
Acked-by: Xiantao Zhang 
Cc: Tony Luck 
Cc: Fenghua Yu 
Cc: Alexander Graf 
Cc: Benjamin Herrenschmidt 
Cc: Christian Borntraeger 
Cc: Cornelia Huck 
Signed-off-by: Marc Zyngier 
Signed-off-by: Gleb Natapov

ARM: KVM: move GIC/timer code to a common location

2013-05-19T12:13:08+00:00

As KVM/arm64 is looming on the horizon, it makes sense to move some
of the common code to a single location in order to reduce duplication.

The code could live anywhere. Actually, most of KVM is already built
with a bunch of ugly ../../.. hacks in the various Makefiles, so we're
not exactly talking about style here. But maybe it is time to start
moving into a less ugly direction.

The include files must be in a "public" location, as they are accessed
from non-KVM files (arch/arm/kernel/asm-offsets.c).

For this purpose, introduce two new locations:
- virt/kvm/arm/ : x86 and ia64 already share the ioapic code in
  virt/kvm, so this could be seen as a (very ugly) precedent.
- include/kvm/  : there is already an include/xen, and while the
  intent is slightly different, this seems as good a location as
  any

Eventually, we should probably have independant Makefiles at every
levels (just like everywhere else in the kernel), but this is just
the first step.

Signed-off-by: Marc Zyngier 
Signed-off-by: Gleb Natapov

ARM: KVM: add support for minimal host vs guest profiling

2013-04-29T04:44:01+00:00

In order to be able to correctly profile what is happening on the
host, we need to be able to identify when we're running on the guest,
and log these events differently.

Perf offers a simple way to register callbacks into KVM. Mimic what
x86 does and enjoy being able to profile your KVM host.

Signed-off-by: Marc Zyngier 
Signed-off-by: Christoffer Dall

ARM: KVM: move exit handler selection to a separate file

2013-03-06T23:48:43+00:00

The exit handler selection code cannot be shared with arm64
(two different modes, more exception classes...).

Move it to a separate file (handle_exit.c).

Signed-off-by: Marc Zyngier 
Signed-off-by: Christoffer Dall

ARM: KVM: arch_timers: Wire the init code and config option

2013-02-11T19:06:00+00:00

It is now possible to select CONFIG_KVM_ARM_TIMER to enable the
KVM architected timer support.

Reviewed-by: Will Deacon 
Signed-off-by: Christoffer Dall 
Signed-off-by: Marc Zyngier

ARM: KVM: Initial VGIC infrastructure code

2013-02-11T18:58:55+00:00

Wire the basic framework code for VGIC support and the initial in-kernel
MMIO support code for the VGIC, used for the distributor emulation.

Reviewed-by: Will Deacon 
Signed-off-by: Christoffer Dall 
Signed-off-by: Marc Zyngier

KVM: ARM: Power State Coordination Interface implementation

2013-01-23T18:29:18+00:00

Implement the PSCI specification (ARM DEN 0022A) to control
virtual CPUs being "powered" on or off.

PSCI/KVM is detected using the KVM_CAP_ARM_PSCI capability.

A virtual CPU can now be initialized in a "powered off" state,
using the KVM_ARM_VCPU_POWER_OFF feature flag.

The guest can use either SMC or HVC to execute a PSCI function.

Reviewed-by: Will Deacon 
Signed-off-by: Marc Zyngier 
Signed-off-by: Christoffer Dall

KVM: ARM: Handle I/O aborts

2013-01-23T18:29:17+00:00

When the guest accesses I/O memory this will create data abort
exceptions and they are handled by decoding the HSR information
(physical address, read/write, length, register) and forwarding reads
and writes to QEMU which performs the device emulation.

Certain classes of load/store operations do not support the syndrome
information provided in the HSR.  We don't support decoding these (patches
are available elsewhere), so we report an error to user space in this case.

This requires changing the general flow somewhat since new calls to run
the VCPU must check if there's a pending MMIO load and perform the write
after userspace has made the data available.

Reviewed-by: Will Deacon 
Reviewed-by: Marcelo Tosatti 
Signed-off-by: Rusty Russell 
Signed-off-by: Marc Zyngier 
Signed-off-by: Christoffer Dall