@@ -419,31 +419,23 @@ bool vgic_v3_rdist_overlap(struct kvm *kvm, gpa_t base, size_t size)
bool vgic_v3_check_base(struct kvm *kvm)
{
struct vgic_dist *d = &kvm->arch.vgic;
- gpa_t redist_size = KVM_VGIC_V3_REDIST_SIZE;
- struct vgic_redist_region *rdreg =
- list_first_entry(&d->rd_regions,
- struct vgic_redist_region, list);
-
- redist_size *= atomic_read(&kvm->online_vcpus);
+ struct vgic_redist_region *rdreg;
if (!IS_VGIC_ADDR_UNDEF(d->vgic_dist_base) &&
d->vgic_dist_base + KVM_VGIC_V3_DIST_SIZE < d->vgic_dist_base)
return false;
- if (rdreg && (rdreg->base + redist_size < rdreg->base))
- return false;
-
- /* Both base addresses must be set to check if they overlap */
- if (IS_VGIC_ADDR_UNDEF(d->vgic_dist_base) || !rdreg)
- return true;
-
- if (d->vgic_dist_base + KVM_VGIC_V3_DIST_SIZE <= rdreg->base)
- return true;
+ list_for_each_entry(rdreg, &d->rd_regions, list) {
+ if (rdreg->base + vgic_v3_rd_region_size(kvm, rdreg) <
+ rdreg->base)
+ return false;
+ }
- if (rdreg->base + redist_size <= d->vgic_dist_base)
+ if (IS_VGIC_ADDR_UNDEF(d->vgic_dist_base))
return true;
- return false;
+ return !vgic_v3_rdist_overlap(kvm, d->vgic_dist_base,
+ KVM_VGIC_V3_DIST_SIZE);
}
/**
We introduce a new helper to check there is no overlap between dist region (if set) and registered rdist regions. This both handles the case of legacy single rdist region (implicitly sized with the number of online vcpus) and the new case of multiple explicitly sized rdist regions. Signed-off-by: Eric Auger <eric.auger@redhat.com> --- virt/kvm/arm/vgic/vgic-v3.c | 26 +++++++++----------------- 1 file changed, 9 insertions(+), 17 deletions(-)