[PATCH v2 2/4] KVM: arm64: Don't WARN from __pkvm_host_share_guest()
Quentin Perret
qperret at google.com
Mon Feb 24 17:53:25 PST 2025
We currently WARN() if the host attempts to share a page that is not in
an acceptable state with a guest. This isn't strictly necessary and
makes testing much harder, so drop the WARN and fix the error code.
Signed-off-by: Quentin Perret <qperret at google.com>
---
arch/arm64/kvm/hyp/nvhe/mem_protect.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/arch/arm64/kvm/hyp/nvhe/mem_protect.c b/arch/arm64/kvm/hyp/nvhe/mem_protect.c
index 19c3c631708c..ae39abc7e604 100644
--- a/arch/arm64/kvm/hyp/nvhe/mem_protect.c
+++ b/arch/arm64/kvm/hyp/nvhe/mem_protect.c
@@ -912,7 +912,6 @@ int __pkvm_host_share_guest(u64 pfn, u64 gfn, struct pkvm_hyp_vcpu *vcpu,
if (page->host_share_guest_count)
break;
/* Only host to np-guest multi-sharing is tolerated */
- WARN_ON(1);
fallthrough;
default:
ret = -EPERM;
--
2.48.1.658.g4767266eb4-goog
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