Similarily to the generic uapi/linux/kvm.h, each architecture
carries a kvm.h header in its arch/*/include/uapi/asm directory.
These contain bits for the architecture specific interface.
Since we use many recent features in kvmtool, the system headers
provided by the distribution are usually not up-to-date.
Copy the Linux v4.1-rc6 versions of those files for all supported
architectures into the kvmtool tree to get access to the full glory.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
kvmtools uses the virtual CPU number to emit the DT CPU nodes.
While this is correct for a flat topology, it fails on anything
else, as the guest expects to find the MPIDR there.
The fix is to ask the kernel for each vcpu MPIDR, and emit this
instead.
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
This patch adds support for ARMv8 processors (more specifically,
Cortex-A57) to kvmtool. Both AArch64 and AArch32 guests are supported,
so the existing AArch32 code is slightly restructured to allow for
re-use of much of the current code.
The implementation closely follows the ARMv7 code and reuses much of the
work written there.
Tested-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
ARM has recently published a document describing a firmware interface
for CPU power management, which can be used for booting secondary cores
on an SMP platform, amongst other things. As part of the mach-virt
upstreaming for the kernel (that is, the virtual platform targetted by
kvmtool), it was suggested that we use this interface instead of the
current spin-table based approach.
This patch implements PSCI support in kvmtool for ARM, removing a fair
amount of code in the process.
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
This patch adds initial support for ARMv7 processors (more specifically,
Cortex-A15) to kvmtool.
Everything is driven by FDT, including dynamic generation of virtio nodes
for MMIO devices (PCI is not used due to lack of a suitable host-bridge).
The virtual timers and virtual interrupt controller (VGIC) are provided
by the kernel and require very little in terms of userspace code.
Tested-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
Andre Przywara