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KVM: arm64: Rework detection of SVE, !VHE systems

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An SVE system is so far the only case where we mandate VHE. As we're
starting to grow this requirements, let's slightly rework the way we
deal with that situation, allowing for easy extension of this check.

Acked-by: Christoffer Dall <christoffer.dall@arm.com>
Reviewed-by: James Morse <james.morse@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Marc Zyngier
2018-12-06 17:31:20 +00:00
committed by Will Deacon
parent c987876a80
commit 33e5f4e509
3 changed files with 8 additions and 8 deletions
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8
virt/kvm/arm/arm.c
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@@ -1640,8 +1640,10 @@ int kvm_arch_init(void *opaque)
return -ENODEV;
}
if (!kvm_arch_check_sve_has_vhe()) {
kvm_pr_unimpl("SVE system without VHE unsupported. Broken cpu?");
in_hyp_mode = is_kernel_in_hyp_mode();
if (!in_hyp_mode && kvm_arch_requires_vhe()) {
kvm_pr_unimpl("CPU unsupported in non-VHE mode, not initializing\n");
return -ENODEV;
}
@@ -1657,8 +1659,6 @@ int kvm_arch_init(void *opaque)
if (err)
return err;
in_hyp_mode = is_kernel_in_hyp_mode();
if (!in_hyp_mode) {
err = init_hyp_mode();
if (err)