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| author | Marc Zyngier <marc.zyngier@arm.com> | 2018-12-06 17:31:20 +0000 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2018-12-10 11:57:52 +0000 |
| commit | 33e5f4e50917c2508c05898f391a971b15eec93e (patch) | |
| tree | 377aa7ce12171c80a895841c4ecbf6ff69787916 /virt | |
| parent | c987876a80e7bcb98a839f10dca9ce7fda4feced (diff) | |
| download | linux-0-day-33e5f4e50917c2508c05898f391a971b15eec93e.tar.gz linux-0-day-33e5f4e50917c2508c05898f391a971b15eec93e.tar.xz | |
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.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/virt/kvm/arm/arm.c b/virt/kvm/arm/arm.c index 23774970c9df6..36165748a3159 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) |