From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9D0643242BD for ; Mon, 30 Mar 2026 14:50:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774882250; cv=none; b=eoX8AvhQV2iys8+JgxHVvPsOAbWAX8c65ntRoDUC7pCovHxM3IoLTsP71GEduCK5AsNFna5F9kurTUBQohYr9K9aExyV3FaJ8qB3OGWkKBcAfKR10TQzDjR50fcI8rWpl7IOrsB5g1nhYsXHfg2gk0hYMpjeyBeXk+VwGtoMyMw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774882250; c=relaxed/simple; bh=GiSskl8OLA12RfOjYegapiMD5zVMQpADJ6x/WJGQmpQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Pxb5mXb+CSV9YKWLOgpRwSZtrxHKUKjkV8fBGy961MzLXie9AhkCfp0iq0cpCyJOSV1TrckfVooq97zyLBwcQt0tqTnehmmwcyVUlruZ+7AKiMDZZDfdVojEsRrjQdOepx9LFC2+S1OPH7dic6eibKlF0OuabJgW43DcR8yHA/Y= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=rBYb6CSv; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="rBYb6CSv" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C3DDCC4CEF7; Mon, 30 Mar 2026 14:50:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1774882250; bh=GiSskl8OLA12RfOjYegapiMD5zVMQpADJ6x/WJGQmpQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=rBYb6CSvb0qq4VRZK4TH0YhGUUtgPYKfm5g69OM1x1bCv5Zp8f1tJguRkM3LNoMdj m4hZt6LKkNPVTjLToBmw3lWE2Cn3It40yvLporQU496rEDTJzRTLugOT5cOHdz8XjJ Dzu8OIiuwd69ReU7x/G3UDRYsQIs+VGlbu0FfP0f1e/2S1qKeRpQ5OB89Rtn4LtAsK TB+rakES9BH2rPwhBH3yZlxbHE76E+RaiZgfqTc8LDEbljuDzlrQakY7MU4r0beW7A 5lk6bu+SDAlZ9LR1eSFm3Bdar/J51PPN1nR/0bd/jnLdFMWJlGM7ER4X7GS6fYCfhe 2+ZOoo9J+muTw== From: Will Deacon To: kvmarm@lists.linux.dev Cc: linux-arm-kernel@lists.infradead.org, Will Deacon , Marc Zyngier , Oliver Upton , Joey Gouly , Suzuki K Poulose , Zenghui Yu , Catalin Marinas , Quentin Perret , Fuad Tabba , Vincent Donnefort , Mostafa Saleh , Alexandru Elisei Subject: [PATCH v5 36/38] KVM: arm64: Extend pKVM page ownership selftests to cover guest hvcs Date: Mon, 30 Mar 2026 15:48:37 +0100 Message-ID: <20260330144841.26181-37-will@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260330144841.26181-1-will@kernel.org> References: <20260330144841.26181-1-will@kernel.org> Precedence: bulk X-Mailing-List: kvmarm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Now that the guest can share and unshare memory with the host using hypercalls, extend the pKVM page ownership selftest to exercise these new transitions. Tested-by: Fuad Tabba Tested-by: Mostafa Saleh Signed-off-by: Will Deacon --- arch/arm64/kvm/hyp/nvhe/mem_protect.c | 30 +++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/arch/arm64/kvm/hyp/nvhe/mem_protect.c b/arch/arm64/kvm/hyp/nvhe/mem_protect.c index 0775a82ee4fe..28a471d1927c 100644 --- a/arch/arm64/kvm/hyp/nvhe/mem_protect.c +++ b/arch/arm64/kvm/hyp/nvhe/mem_protect.c @@ -1814,11 +1814,41 @@ void pkvm_ownership_selftest(void *base) assert_transition_res(-EPERM, __pkvm_host_unshare_hyp, pfn); assert_transition_res(-EPERM, __pkvm_hyp_donate_host, pfn, 1); + selftest_state.host = PKVM_PAGE_SHARED_BORROWED; + selftest_state.guest[0] = PKVM_PAGE_SHARED_OWNED; + assert_transition_res(0, __pkvm_guest_share_host, vcpu, gfn); + assert_transition_res(-EPERM, __pkvm_guest_share_host, vcpu, gfn); + assert_transition_res(-EPERM, __pkvm_host_donate_guest, pfn, gfn, vcpu); + assert_transition_res(-EPERM, __pkvm_host_donate_guest, pfn, gfn + 1, vcpu); + assert_transition_res(-EPERM, __pkvm_host_share_guest, pfn, gfn, 1, vcpu, prot); + assert_transition_res(-EPERM, __pkvm_host_share_guest, pfn, gfn + 1, 1, vcpu, prot); + assert_transition_res(-EPERM, __pkvm_host_share_ffa, pfn, 1); + assert_transition_res(-EPERM, __pkvm_host_donate_hyp, pfn, 1); + assert_transition_res(-EPERM, __pkvm_host_share_hyp, pfn); + assert_transition_res(-EPERM, __pkvm_host_unshare_hyp, pfn); + assert_transition_res(-EPERM, __pkvm_hyp_donate_host, pfn, 1); + + selftest_state.host = PKVM_NOPAGE; + selftest_state.guest[0] = PKVM_PAGE_OWNED; + assert_transition_res(0, __pkvm_guest_unshare_host, vcpu, gfn); + assert_transition_res(-EPERM, __pkvm_guest_unshare_host, vcpu, gfn); + assert_transition_res(-EPERM, __pkvm_host_donate_guest, pfn, gfn, vcpu); + assert_transition_res(-EPERM, __pkvm_host_donate_guest, pfn, gfn + 1, vcpu); + assert_transition_res(-EPERM, __pkvm_host_share_guest, pfn, gfn, 1, vcpu, prot); + assert_transition_res(-EPERM, __pkvm_host_share_guest, pfn, gfn + 1, 1, vcpu, prot); + assert_transition_res(-EPERM, __pkvm_host_share_ffa, pfn, 1); + assert_transition_res(-EPERM, __pkvm_host_donate_hyp, pfn, 1); + assert_transition_res(-EPERM, __pkvm_host_share_hyp, pfn); + assert_transition_res(-EPERM, __pkvm_host_unshare_hyp, pfn); + assert_transition_res(-EPERM, __pkvm_hyp_donate_host, pfn, 1); + selftest_state.host = PKVM_PAGE_OWNED; selftest_state.guest[0] = PKVM_POISON; assert_transition_res(0, __pkvm_host_force_reclaim_page_guest, phys); assert_transition_res(-EPERM, __pkvm_host_donate_guest, pfn, gfn, vcpu); assert_transition_res(-EPERM, __pkvm_host_share_guest, pfn, gfn, 1, vcpu, prot); + assert_transition_res(-EHWPOISON, __pkvm_guest_share_host, vcpu, gfn); + assert_transition_res(-EHWPOISON, __pkvm_guest_unshare_host, vcpu, gfn); selftest_state.host = PKVM_NOPAGE; selftest_state.guest[1] = PKVM_PAGE_OWNED; -- 2.53.0.1018.g2bb0e51243-goog