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KVM: arm/arm64: vgic-new: enable build

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Now that the new VGIC implementation has reached feature parity with
the old one, add the new files to the build system and add a Kconfig
option to switch between the two versions.
We set the default to the new version to get maximum test coverage,
in case people experience problems they can switch back to the old
behaviour if needed.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Christoffer Dall <christoffer.dall@linaro.org>
This commit is contained in:
Andre Przywara 2016-03-16 15:06:41 +00:00 committed by Christoffer Dall
parent 568e8c901e
commit efffe55af5
5 changed files with 42 additions and 0 deletions
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7
arch/arm/kvm/Kconfig
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@ -46,6 +46,13 @@ config KVM_ARM_HOST
---help---
Provides host support for ARM processors.
config KVM_NEW_VGIC
bool "New VGIC implementation"
depends on KVM
default y
---help---
uses the new VGIC implementation
source drivers/vhost/Kconfig
endif # VIRTUALIZATION

11
arch/arm/kvm/Makefile
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@ -21,7 +21,18 @@ obj-$(CONFIG_KVM_ARM_HOST) += hyp/
obj-y += kvm-arm.o init.o interrupts.o
obj-y += arm.o handle_exit.o guest.o mmu.o emulate.o reset.o
obj-y += coproc.o coproc_a15.o coproc_a7.o mmio.o psci.o perf.o
ifeq ($(CONFIG_KVM_NEW_VGIC),y)
obj-y += $(KVM)/arm/vgic/vgic.o
obj-y += $(KVM)/arm/vgic/vgic-init.o
obj-y += $(KVM)/arm/vgic/vgic-irqfd.o
obj-y += $(KVM)/arm/vgic/vgic-v2.o
obj-y += $(KVM)/arm/vgic/vgic-mmio.o
obj-y += $(KVM)/arm/vgic/vgic-mmio-v2.o
obj-y += $(KVM)/arm/vgic/vgic-kvm-device.o
else
obj-y += $(KVM)/arm/vgic.o
obj-y += $(KVM)/arm/vgic-v2.o
obj-y += $(KVM)/arm/vgic-v2-emul.o
endif
obj-y += $(KVM)/arm/arch_timer.o

7
arch/arm64/kvm/Kconfig
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@ -54,6 +54,13 @@ config KVM_ARM_PMU
Adds support for a virtual Performance Monitoring Unit (PMU) in
virtual machines.
config KVM_NEW_VGIC
bool "New VGIC implementation"
depends on KVM
default y
---help---
uses the new VGIC implementation
source drivers/vhost/Kconfig
endif # VIRTUALIZATION

12
arch/arm64/kvm/Makefile
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@ -20,10 +20,22 @@ kvm-$(CONFIG_KVM_ARM_HOST) += emulate.o inject_fault.o regmap.o
kvm-$(CONFIG_KVM_ARM_HOST) += hyp.o hyp-init.o handle_exit.o
kvm-$(CONFIG_KVM_ARM_HOST) += guest.o debug.o reset.o sys_regs.o sys_regs_generic_v8.o
ifeq ($(CONFIG_KVM_NEW_VGIC),y)
kvm-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/vgic/vgic.o
kvm-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/vgic/vgic-init.o
kvm-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/vgic/vgic-irqfd.o
kvm-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/vgic/vgic-v2.o
kvm-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/vgic/vgic-v3.o
kvm-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/vgic/vgic-mmio.o
kvm-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/vgic/vgic-mmio-v2.o
kvm-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/vgic/vgic-mmio-v3.o
kvm-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/vgic/vgic-kvm-device.o
else
kvm-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/vgic.o
kvm-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/vgic-v2.o
kvm-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/vgic-v2-emul.o
kvm-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/vgic-v3.o
kvm-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/vgic-v3-emul.o
endif
kvm-$(CONFIG_KVM_ARM_HOST) += $(KVM)/arm/arch_timer.o
kvm-$(CONFIG_KVM_ARM_PMU) += $(KVM)/arm/pmu.o

5
virt/kvm/arm/hyp/vgic-v2-sr.c
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@ -21,7 +21,12 @@
#include <asm/kvm_hyp.h>
#ifdef CONFIG_KVM_NEW_VGIC
extern struct vgic_global kvm_vgic_global_state;
#define vgic_v2_params kvm_vgic_global_state
#else
extern struct vgic_params vgic_v2_params;
#endif
static void __hyp_text save_maint_int_state(struct kvm_vcpu *vcpu,
void __iomem *base)