aboutsummaryrefslogtreecommitdiffstats
path: root/arch/arm64/kvm
diff options
context:
space:
mode:
authorVladimir Murzin <vladimir.murzin@arm.com>2016-09-12 15:49:24 +0100
committerChristoffer Dall <christoffer.dall@linaro.org>2016-09-22 13:22:21 +0200
commitacda5430bee4621f218391d0bcfbe4412adb3554 (patch)
treed279ce897d2666ca9481963dca9fc9aede6e85dd /arch/arm64/kvm
parentARM: gic-v3: Introduce 32-to-64-bit mappings for GICv3 cpu registers (diff)
downloadlinux-dev-acda5430bee4621f218391d0bcfbe4412adb3554.tar.xz
linux-dev-acda5430bee4621f218391d0bcfbe4412adb3554.zip
ARM: KVM: Support vgic-v3
This patch allows to build and use vgic-v3 in 32-bit mode. Unfortunately, it can not be split in several steps without extra stubs to keep patches independent and bisectable. For instance, virt/kvm/arm/vgic/vgic-v3.c uses function from vgic-v3-sr.c, handling access to GICv3 cpu interface from the guest requires vgic_v3.vgic_sre to be already defined. It is how support has been done: * handle SGI requests from the guest * report configured SRE on access to GICv3 cpu interface from the guest * required vgic-v3 macros are provided via uapi.h * static keys are used to select GIC backend * to make vgic-v3 build KVM_ARM_VGIC_V3 guard is removed along with the static inlines Acked-by: Marc Zyngier <marc.zyngier@arm.com> Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org> Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Diffstat (limited to 'arch/arm64/kvm')
-rw-r--r--arch/arm64/kvm/Kconfig4
1 files changed, 0 insertions, 4 deletions
diff --git a/arch/arm64/kvm/Kconfig b/arch/arm64/kvm/Kconfig
index 7ba91647d1c5..6eaf12c1d627 100644
--- a/arch/arm64/kvm/Kconfig
+++ b/arch/arm64/kvm/Kconfig
@@ -19,9 +19,6 @@ if VIRTUALIZATION
config KVM_ARM_VGIC_V3_ITS
bool
-config KVM_ARM_VGIC_V3
- bool
-
config KVM
bool "Kernel-based Virtual Machine (KVM) support"
depends on OF
@@ -37,7 +34,6 @@ config KVM
select KVM_VFIO
select HAVE_KVM_EVENTFD
select HAVE_KVM_IRQFD
- select KVM_ARM_VGIC_V3
select KVM_ARM_VGIC_V3_ITS
select KVM_ARM_PMU if HW_PERF_EVENTS
select HAVE_KVM_MSI