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| author | Eric Auger <eric.auger@redhat.com> | 2019-08-23 19:33:30 +0200 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2019-08-25 11:02:52 +0100 |
| commit | 3109741a8d773b91eec4a1f7764c97a1176ec32d (patch) | |
| tree | eaf4b6f30e5d5d290bf2b4ad51d52263c549b3b2 /virt/kvm/arm/vgic/vgic-init.c | |
| parent | 926c61568d0b2e57254e92290369d4539568f8cc (diff) | |
| download | linux-3109741a8d773b91eec4a1f7764c97a1176ec32d.tar.gz linux-3109741a8d773b91eec4a1f7764c97a1176ec32d.tar.bz2 linux-3109741a8d773b91eec4a1f7764c97a1176ec32d.zip | |
KVM: arm/arm64: vgic: Use a single IO device per redistributor
At the moment we use 2 IO devices per GICv3 redistributor: one
one for the RD_base frame and one for the SGI_base frame.
Instead we can use a single IO device per redistributor (the 2
frames are contiguous). This saves slots on the KVM_MMIO_BUS
which is currently limited to NR_IOBUS_DEVS (1000).
This change allows to instantiate up to 512 redistributors and may
speed the guest boot with a large number of VCPUs.
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Diffstat (limited to 'virt/kvm/arm/vgic/vgic-init.c')
| -rw-r--r-- | virt/kvm/arm/vgic/vgic-init.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/virt/kvm/arm/vgic/vgic-init.c b/virt/kvm/arm/vgic/vgic-init.c index 9175bfd83263..958e2f0d2207 100644 --- a/virt/kvm/arm/vgic/vgic-init.c +++ b/virt/kvm/arm/vgic/vgic-init.c @@ -193,7 +193,6 @@ int kvm_vgic_vcpu_init(struct kvm_vcpu *vcpu) int i; vgic_cpu->rd_iodev.base_addr = VGIC_ADDR_UNDEF; - vgic_cpu->sgi_iodev.base_addr = VGIC_ADDR_UNDEF; INIT_LIST_HEAD(&vgic_cpu->ap_list_head); raw_spin_lock_init(&vgic_cpu->ap_list_lock); |