[PATCH v3 2/4] KVM: arm64: Don't WARN from __pkvm_host_share_guest()

[Quentin Perret]

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 make sure to propage the
error code instead.

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 709d286999a1..4a0f98943577 100644
--- a/arch/arm64/kvm/hyp/nvhe/mem_protect.c
+++ b/arch/arm64/kvm/hyp/nvhe/mem_protect.c
@@ -921,7 +921,6 @@ 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;
-- 
2.49.0.604.gff1f9ca942-goog