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| author |   Mark Rutland <mark.rutland@arm.com> | 2025-02-13 09:15:31 +0000 |
|---|---|---|
| committer |   Marc Zyngier <maz@kernel.org> | 2025-02-13 17:55:13 +0000 |
| commit | 332b7e6d62b7a3a988017f5184e547aa20e3a19a (patch) | |
| tree | 0ab6038475abb599eebce85851ed45c1fa793d7e | |
| parent | KVM: arm64: Eagerly switch ZCR_EL{1,2} (diff) | |
| download | wireguard-linux-332b7e6d62b7a3a988017f5184e547aa20e3a19a.tar.xz wireguard-linux-332b7e6d62b7a3a988017f5184e547aa20e3a19a.zip | |
KVM: arm64: Simplify warning in kvm_arch_vcpu_load_fp()
At the end of kvm_arch_vcpu_load_fp() we check that no bits are set in
SVCR. We only check this for protected mode despite this mattering
equally for non-protected mode, and the comment above this is confusing.
Remove the comment and simplify the check, moving from WARN_ON() to
WARN_ON_ONCE() to avoid spamming the log.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
| -rw-r--r-- | arch/arm64/kvm/fpsimd.c | 7 |
1 files changed, 1 insertions, 6 deletions
diff --git a/arch/arm64/kvm/fpsimd.c b/arch/arm64/kvm/fpsimd.c index 3cbb999419af..7f6e43d25691 100644 --- a/arch/arm64/kvm/fpsimd.c +++ b/arch/arm64/kvm/fpsimd.c @@ -65,12 +65,7 @@ void kvm_arch_vcpu_load_fp(struct kvm_vcpu *vcpu) fpsimd_save_and_flush_cpu_state(); *host_data_ptr(fp_owner) = FP_STATE_FREE; - /* - * If normal guests gain SME support, maintain this behavior for pKVM - * guests, which don't support SME. - */ - WARN_ON(is_protected_kvm_enabled() && system_supports_sme() && - read_sysreg_s(SYS_SVCR)); + WARN_ON_ONCE(system_supports_sme() && read_sysreg_s(SYS_SVCR)); } /* |