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authorMarc Zyngier <marc.zyngier@arm.com>2018-12-06 17:31:20 +0000
committerWill Deacon <will.deacon@arm.com>2018-12-10 11:57:52 +0000
commit33e5f4e50917c2508c05898f391a971b15eec93e (patch)
tree377aa7ce12171c80a895841c4ecbf6ff69787916 /virt
parentc987876a80e7bcb98a839f10dca9ce7fda4feced (diff)
downloadlinux-stericsson-33e5f4e50917c2508c05898f391a971b15eec93e.tar.gz
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 <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>
Diffstat (limited to 'virt')
-rw-r--r--virt/kvm/arm/arm.c8
1 files changed, 4 insertions, 4 deletions
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)