From 33e5f4e50917c2508c05898f391a971b15eec93e Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Thu, 6 Dec 2018 17:31:20 +0000 Subject: KVM: arm64: Rework detection of SVE, !VHE systems 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 Reviewed-by: James Morse Signed-off-by: Marc Zyngier Signed-off-by: Will Deacon --- virt/kvm/arm/arm.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'virt/kvm') diff --git a/virt/kvm/arm/arm.c b/virt/kvm/arm/arm.c index 23774970c9df..36165748a315 100644 --- a/virt/kvm/arm/arm.c +++ b/virt/kvm/arm/arm.c @@ -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) -- cgit v1.2.3