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 0620C3A7F6D for ; Thu, 5 Mar 2026 14:46:01 +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=1772721962; cv=none; b=ns2FpwrhRlGDyrtQ61H9QYInConVpEmZ5zLHgaD0qZxXypEsuMlpTkGxOZZGzcx8el90y3igQO6SD/cVWNP1Crhk1zf1vDa+/DAJz+ltQPslZt4l+Wb1k9msdOqpRCWePMPUUeZFMzuy7aoxpkSD+vdyP3zLV7IrGSy485EAxOI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772721962; c=relaxed/simple; bh=JMsADauVwoK+rhbXcdhmsfcGVmS4DV0WhUMrvOzFvmI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=pECk2GQaEiKTAdNcWX9D3an1kC4IQcQZiU+KqVWt4DHYo/d15+WWDhjkW9Rq2KTK/rHAlDSkJmTn2lk7woXggOBRYCrB+69avTCocYJXcxclEzfKJEWQTDFSOjZotIyKs40lndjvq5PObwuNJRalflJU8ISLRA7RLwPd7UwpsTs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=tn0cJn9L; 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="tn0cJn9L" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BC736C2BCB0; Thu, 5 Mar 2026 14:45:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772721961; bh=JMsADauVwoK+rhbXcdhmsfcGVmS4DV0WhUMrvOzFvmI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=tn0cJn9LzZ+mrl3/VCy4skw6dMAjgx/KyUN/x6wm+Id4OVhDU5IYwxi5DbV/1q4EV MuOEMFK222ZyWewoaIJKSEm7RNDp2tODoGDuBBj65jptDgbADXmqe0Nma+v211f+ob vCz3DQe9w3XlqkrpQfMjuqUp4ZxDraxhz5v+S61oK2+wfLAbnuJqzHPt8uu/EKx5Y+ g8daLEXAvgw6WmLLtOOiNBT+omsU7tRWHvoTnJ/NbAjl7p2Cwu/i6vqbjd7OX5RqNd Y4ICTlwnIzJXluGXMQvT/zLquoP1JVJPtGQzkMQQdPgTGZHVadsMh6ALwZIeyju967 Vom6nAWy/cB3w== 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 32/36] KVM: arm64: Extend pKVM page ownership selftests to cover guest donation Date: Thu, 5 Mar 2026 14:43:45 +0000 Message-ID: <20260305144351.17071-33-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 Extend the pKVM page ownership selftests to donate and reclaim a page to/from a guest. Signed-off-by: Will Deacon --- arch/arm64/kvm/hyp/nvhe/mem_protect.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/arch/arm64/kvm/hyp/nvhe/mem_protect.c b/arch/arm64/kvm/hyp/nvhe/mem_protect.c index 4451955ac767..d13ea7b7e878 100644 --- a/arch/arm64/kvm/hyp/nvhe/mem_protect.c +++ b/arch/arm64/kvm/hyp/nvhe/mem_protect.c @@ -1749,6 +1749,7 @@ void pkvm_ownership_selftest(void *base) assert_transition_res(-EPERM, hyp_pin_shared_mem, virt, virt + size); assert_transition_res(-EPERM, __pkvm_host_share_guest, pfn, gfn, 1, vcpu, prot); assert_transition_res(-ENOENT, __pkvm_host_unshare_guest, gfn, 1, vm); + assert_transition_res(-EPERM, __pkvm_host_donate_guest, pfn, gfn, vcpu); selftest_state.host = PKVM_PAGE_OWNED; selftest_state.hyp = PKVM_NOPAGE; @@ -1768,6 +1769,7 @@ void pkvm_ownership_selftest(void *base) assert_transition_res(-EPERM, __pkvm_hyp_donate_host, pfn, 1); assert_transition_res(-EPERM, __pkvm_host_share_guest, pfn, gfn, 1, vcpu, prot); assert_transition_res(-ENOENT, __pkvm_host_unshare_guest, gfn, 1, vm); + assert_transition_res(-EPERM, __pkvm_host_donate_guest, pfn, gfn, vcpu); assert_transition_res(0, hyp_pin_shared_mem, virt, virt + size); assert_transition_res(0, hyp_pin_shared_mem, virt, virt + size); @@ -1780,6 +1782,7 @@ void pkvm_ownership_selftest(void *base) assert_transition_res(-EPERM, __pkvm_hyp_donate_host, pfn, 1); assert_transition_res(-EPERM, __pkvm_host_share_guest, pfn, gfn, 1, vcpu, prot); assert_transition_res(-ENOENT, __pkvm_host_unshare_guest, gfn, 1, vm); + assert_transition_res(-EPERM, __pkvm_host_donate_guest, pfn, gfn, vcpu); hyp_unpin_shared_mem(virt, virt + size); assert_page_state(); @@ -1799,6 +1802,7 @@ void pkvm_ownership_selftest(void *base) assert_transition_res(-EPERM, __pkvm_hyp_donate_host, pfn, 1); assert_transition_res(-EPERM, __pkvm_host_share_guest, pfn, gfn, 1, vcpu, prot); assert_transition_res(-ENOENT, __pkvm_host_unshare_guest, gfn, 1, vm); + assert_transition_res(-EPERM, __pkvm_host_donate_guest, pfn, gfn, vcpu); assert_transition_res(-EPERM, hyp_pin_shared_mem, virt, virt + size); selftest_state.host = PKVM_PAGE_OWNED; @@ -1815,6 +1819,7 @@ void pkvm_ownership_selftest(void *base) 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); + assert_transition_res(-EPERM, __pkvm_host_donate_guest, pfn, gfn, vcpu); assert_transition_res(-EPERM, hyp_pin_shared_mem, virt, virt + size); selftest_state.guest[1] = PKVM_PAGE_SHARED_BORROWED; @@ -1828,6 +1833,23 @@ void pkvm_ownership_selftest(void *base) selftest_state.host = PKVM_PAGE_OWNED; assert_transition_res(0, __pkvm_host_unshare_guest, gfn + 1, 1, vm); + selftest_state.host = PKVM_NOPAGE; + selftest_state.guest[0] = PKVM_PAGE_OWNED; + assert_transition_res(0, __pkvm_host_donate_guest, pfn, gfn, vcpu); + 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_NOPAGE; + assert_transition_res(0, __pkvm_host_reclaim_page_guest, gfn, vm); + selftest_state.host = PKVM_NOPAGE; selftest_state.hyp = PKVM_PAGE_OWNED; assert_transition_res(0, __pkvm_host_donate_hyp, pfn, 1); -- 2.53.0.473.g4a7958ca14-goog