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 93BA6F33A75 for ; Thu, 5 Mar 2026 14:46:21 +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=WCLWYQ18/s6Nm4fe1duu2e+pVwieQtkohLKILTlNCGo=; b=widy19fAlVLyyemqnmaeK2MGgu T57EVjUqXe09A00+fcrIVWGsV/JDqLc8J+wpSqG+OziXwmoUTYc3btMzWpBNlHK8KEHfUPjsUs3RI GCJn/gbp+/i2d9TGtOqS2yS49Q3qvj1gAKE3gWBe+3sL1KV8ktRXbu01Yzi5HPsu+DVv0qcvmw4gx Y+qsPUarCz8h6skAxeLmhGs4LaiKnHkpMp1HL1Wx1hjkGAle1Y/vkZ8zxrNwGPmTBSlBf9FwN4OHd s8hbjLNdycg/FCAuZbpAe8uC9HLcgeypEvA4roQ7oz2wpuO5l4inoZMDmobK4KIR8HEe4UK9qSLRw Ma61EyqQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vy9xw-000000023D5-3hnN; Thu, 05 Mar 2026 14:46:16 +0000 Received: from tor.source.kernel.org ([2600:3c04:e001:324:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vy9xt-0000000237A-0KHd for linux-arm-kernel@lists.infradead.org; Thu, 05 Mar 2026 14:46:13 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id 50E3361857; Thu, 5 Mar 2026 14:46:12 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1E76FC2BC9E; Thu, 5 Mar 2026 14:46:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772721972; bh=CIGOKJuZgKjFCfL6DC6C0hs/9MofTsV+iNo7k0rsBuI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=X9TbfUopPoGk3E4Rh/PUqiF8HXSVSirfRUHrJ3lA/MkElzVDm3y4aFJy7YZCxnkCo Et9yaISXp13cUDM0rL3csspZIajejutExk5MXOox/0MMTW3gelFbxgjNskNiPdILo2 r2b8owgqfQlvyjLudYko9fI/JeWJUECF6G/x88tczZlBv49jZa931+UYvhsOeM3I8/ pn3C/ncEouVl/E50f3/2lCpoCHa5sx33yv6Y94SREDT0uKKO3twjRGgPED+4xyB5CF FdYVPind0jXCLHaKoONvPltCoVC2KjHnhOXjC8ihQeNazVd2kcxNHssTyi9KDOYiZt I6npCQHmYi/3A== 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 v3 35/36] KVM: arm64: Extend pKVM page ownership selftests to cover guest hvcs Date: Thu, 5 Mar 2026 14:43:48 +0000 Message-ID: <20260305144351.17071-36-will@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260305144351.17071-1-will@kernel.org> References: <20260305144351.17071-1-will@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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. 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 de224e4ffeeb..f8f38c0e6835 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; -- 2.53.0.473.g4a7958ca14-goog