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 222593A961F for ; Thu, 5 Mar 2026 14:46:12 +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=1772721972; cv=none; b=chJwaD7xg/c/gAZ1uEWEeDJ2iiLQi2dsuCA0vujBoQgIF/hsfycVs+iOfmxbAwXmy5kpr1UXigiBq1yVTGXOx/VMXBnou+QMDhg5azzYsedGZf6/ZzscIR59P6WQXRfXF5XgyhTB6JTSn1PB5GhLZivJ/5e0RZKModJb35FtuYk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772721972; c=relaxed/simple; bh=CIGOKJuZgKjFCfL6DC6C0hs/9MofTsV+iNo7k0rsBuI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=AaaADeIqdhEf/7rRJjiPcvGsJtj9FR4p6DHE8UNKdHUrNQn7JaWhnSO/vtcEgVLzvarBQoY+n5/pextCPrhNsy4R8c/93tsEeBiDFJ353pCIr3SjSeoBSGKj9AcivwNjkpcg3oUzTp+jKPMojLhF/UBuQ0aDHggMdOX4EvYa+KA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=X9TbfUop; 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="X9TbfUop" 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> 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. 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