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 9AB38CCF2F9 for ; Mon, 19 Jan 2026 12:49:59 +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=dlhyux3x+YR7wopo5K6C9Ezvq+DkfrgfSI0oQQbymkU=; b=H6AnDW6rLrf+yfq5RV6YEtrnZF vFEbvheekGJz8fNVqXMESK+IBHQZTtMphzYzbm0cPT3Vabc6vhEPCgUSyWfthnL4JNkcewGAyGNR/ gu2lyt3JVA3SyUPGuwVfGz1jGVMXrqTBJf+0CtyPgg6aK5PlfPQdJtFsJwE1cn+l8Ky0dO2knU+uL U9IiP0OmPdO2owR4d52N+dGj5mJVud3uY2ZQGfprlrHULa9WahBCf1ihgmbF4H7BH+nNSB5/yL1OQ glPAxgM4Ud7aFaUOX0lpjFLOFIBm7uQh94gIm5ft6LSnJI8uDzqAXJGYEzLYGv1Xga0vwFiuHUzQb qjt+og0g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vhohV-0000000254Z-24kb; Mon, 19 Jan 2026 12:49:45 +0000 Received: from tor.source.kernel.org ([172.105.4.254]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vhogT-000000024GA-39iH for linux-arm-kernel@lists.infradead.org; Mon, 19 Jan 2026 12:48:44 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id 34C9E60131; Mon, 19 Jan 2026 12:48:41 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 56E28C116C6; Mon, 19 Jan 2026 12:48:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1768826920; bh=XtjaNjYBSzXtUDXYEYlzOYWEqBLFkdzbmK8msawMA4I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=tD57yHSrjT61I+3b+qGXsz4c8cbH3DbsLVC7YK/crkzPjska1HS6+EUNnoN6+cXxr TCqkuAyIcHLBSbYHdMbj7WfTzLpliVOR04Glf6ZmNY0Gz1I2jmI1kL0aa76gQXisyj PlE4lS1rL74EFed3ncy2433lx2noj3Y75eynUq55TzqFgtUYBRVviSa1E7HJeo/c1A BWngPFnoKYCk3GBRdBZdCz+P+gl89rlpvDqIOIadc8QKDAJVhP4PBtF51OUur7sVpZ 9o8UTWtmKbcK6QRl/JjWEIWTHvMZbIHCO8W7M/F8OirtkL1MnOjGKcHqF9OuDF9czs 3pk/U6/OvM8NA== 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 Subject: [PATCH v2 35/35] KVM: arm64: Extend pKVM page ownership selftests to cover guest hvcs Date: Mon, 19 Jan 2026 12:46:28 +0000 Message-ID: <20260119124629.2563-36-will@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260119124629.2563-1-will@kernel.org> References: <20260119124629.2563-1-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 a7d880701933..2a75b5649289 100644 --- a/arch/arm64/kvm/hyp/nvhe/mem_protect.c +++ b/arch/arm64/kvm/hyp/nvhe/mem_protect.c @@ -1820,11 +1820,41 @@ 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; -- 2.52.0.457.g6b5491de43-goog