From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D7F3510ED67C for ; Fri, 27 Mar 2026 14:04:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=36AvUlNtgK0T7U0U4oZfdexMOsAgghtB3DUynVUApCo=; b=LOIuo7L8bir0KcdjaFYv0YWgjg y/XfqT4V4RFYA5El7V8CAqAhyB6XilGyUDFMPDGZiRxerZKBt3VGyJ/HnwqbzbaPmzc7V5cD2wyGe wsf5Y35Ex+VLRpfGLBu4RGW6fy1Las/YC9nWOSQ+vHxMbh7DdhnHRxkd5JAG9vPGd8APhyEPf1an+ 7AlrRh0wnFhlkueJhiv1dPRefKBBUk3RpsAKLof+MK4K08F0q3FXI7yYG+cx6FqLG0VGNBybN/72i 3i/Vll5OFzjZGN/wWTmZHEhZe+BdFZxt2f2AhkydDc6JdTEAum3YtTkJK6Zx+VG5SQzxejp3cxdP7 rpiomCfw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1w67mz-00000007Xil-2lSv; Fri, 27 Mar 2026 14:03:53 +0000 Received: from sea.source.kernel.org ([172.234.252.31]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1w67ly-00000007Wyr-0VzL for linux-arm-kernel@lists.infradead.org; Fri, 27 Mar 2026 14:02:57 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 9B2B142A48; Fri, 27 Mar 2026 14:02:49 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C5122C19423; Fri, 27 Mar 2026 14:02:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1774620169; bh=Lt5f4dcoCx+8QH+YtzLO7DvbDoIX+GF3jrrIPRh/lk0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=TybQmRMghihEsVjuRnCaUj4SMLLRoPsxWCyHL4I8WvcneUizNAotgG1BYgUt4thj/ Cm4fi1HILYK9vULdPIkCsvE144v6JsVRxox6r/NyZl/gzeGDU7RSrrvHt0QxA/bq36 qehm/uKn7W2VN3FlzOTQVz+rqELrxxGMrnmQGi/h7EDaUc0pKycm2cwwUHQqOXmJj4 uG0DX7sh/Fe2XJWBwHCj7++1pe1mas3gTtZTvT938LCRMzQ19+xjq3Dtx2LmsWECns slvP82aPFq5R/jtAn2hLVPCx38a1p5Tlm1JNF+75rACa7WLMx1nnP9tE1yFQK+RC5G XggexcdUoFbdA== 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 v4 36/38] KVM: arm64: Extend pKVM page ownership selftests to cover guest hvcs Date: Fri, 27 Mar 2026 14:00:35 +0000 Message-ID: <20260327140039.21228-37-will@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260327140039.21228-1-will@kernel.org> References: <20260327140039.21228-1-will@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260327_070250_297234_0F499BAA X-CRM114-Status: UNSURE ( 7.91 ) X-CRM114-Notice: Please train this message. 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 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 05a5b145e303..0921efb8a16f 100644 --- a/arch/arm64/kvm/hyp/nvhe/mem_protect.c +++ b/arch/arm64/kvm/hyp/nvhe/mem_protect.c @@ -1812,11 +1812,41 @@ 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