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 E5F3730CD82 for ; Fri, 27 Mar 2026 14:02:39 +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=1774620160; cv=none; b=hOBACtAqxcTz4M0kfYLPAeVaLGanNn4jNgG+YO20L1Lc2yfWkls3RiWGptl9R9varZFvKervIdrKelUPOknHk+Kz6cf1fVPNAGOAHrw8rpCyCfASyjizI6uHDghFy/wR3Ocu2Z5UECBeNnGYtogOcZzZV+oQLKDvnp13G2SubPA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774620160; c=relaxed/simple; bh=Ka4+inpBD+L8tuFeMgIg5uimmBKJqQeDMko6zx3336Q=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=MmMqT6lyBaWCdMqE/liMsR3YR1gKG8J2LjThVvtewwzJDpit4gqpOTpyIRfCAG9i10qvJHR1elIFuXM+sERTrBDrKHxj41DBHcdU6YaQa+rWUuAA3avDK+VYIMGWsP6wsNNl+bMDjNSyBUSfBxNeYcUoQPz+TfJXKPor6AA2h7E= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=mY/SvfyG; 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="mY/SvfyG" Received: by smtp.kernel.org (Postfix) with ESMTPSA id ED17EC2BCB2; Fri, 27 Mar 2026 14:02:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1774620159; bh=Ka4+inpBD+L8tuFeMgIg5uimmBKJqQeDMko6zx3336Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mY/SvfyGUPpT9fIZWvre7gekn74HswOG6TAqUHgiQIPaBIFw6NFpTjcvFuX+ZhYHB 8D8//6kh04W5ewfSr+EBEtcKF8NToQJyJKk6J4pZtp99Dmp+dMk3ZbDr9zWcoaxhjN qeZJY+X/rn8kcZk0KXs5XM3FkLg2g33uQw6A1fgd6oerCTCx3qpAHz4rgoNXCTxOZk xsVzX/cLLWj4u6zqR8Oks4+s8vh6r063MID8iYsUZXED4X/10ck6Cu8Diem/+tfWY7 n3iTaaDa7uVn3LBF7nHHBRRTQiMAnkIjqo/ZquNZtRcnMA7uy6KK5H/0gGs1c4pKku IRlVfmesViTtA== 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 33/38] KVM: arm64: Extend pKVM page ownership selftests to cover guest donation Date: Fri, 27 Mar 2026 14:00:32 +0000 Message-ID: <20260327140039.21228-34-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> 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. Tested-by: Fuad Tabba Tested-by: Mostafa Saleh 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 898bd5d767ce..6525f9fa274c 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); -- 2.53.0.1018.g2bb0e51243-goog