Commit 845f1267 authored by Quentin Perret's avatar Quentin Perret Committed by Marc Zyngier
Browse files

KVM: arm64: Don't WARN from __pkvm_host_share_guest() 



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: default avatarQuentin Perret <qperret@google.com>
Link: https://lore.kernel.org/r/20250416160900.3078417-3-qperret@google.com


Signed-off-by: default avatarMarc Zyngier <maz@kernel.org>
parent 74b13d58

arch/arm64/kvm/hyp/nvhe/mem_protect.c

+0 −1
Original line number Diff line number Diff line
@@ -919,7 +919,6 @@ 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;