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X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org With pKVM enabled, guest stage-2 page tables are owned and managed by the hypervisor. The host's pgt is uninitialised. Skip registering stage-2 ptdump debugfs files when protected KVM is enabled. Fixes: 7c4f73548ed1 ("KVM: arm64: Register ptdump with debugfs on guest creation") Signed-off-by: Vincent Donnefort --- arch/arm64/kvm/ptdump.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/arm64/kvm/ptdump.c b/arch/arm64/kvm/ptdump.c index 69899797dbad..87e5e7a4e612 100644 --- a/arch/arm64/kvm/ptdump.c +++ b/arch/arm64/kvm/ptdump.c @@ -300,6 +300,10 @@ void kvm_nested_s2_ptdump_remove_debugfs(struct kvm_s2_mmu *mmu) void kvm_s2_ptdump_create_debugfs(struct kvm *kvm) { + /* pKVM handles the page-tables in the hypervisor */ + if (is_protected_kvm_enabled()) + return; + debugfs_create_file("stage2_page_tables", 0400, kvm->debugfs_dentry, &kvm->arch.mmu, &kvm_ptdump_guest_fops); debugfs_create_file("ipa_range", 0400, kvm->debugfs_dentry, base-commit: fd73f4a6659897191fa0d40695fe370925dd3780 -- 2.55.0.1082.g2b9226bbc0-goog