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 08D2335EDA5 for ; Mon, 19 Jan 2026 12:48:31 +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=1768826912; cv=none; b=Lhr7gmY+AqA0xB9O3/1G8fAFwqRuD3YT22G4e/6kkZjRwPYqWYkno9AYXQFGt/5XGLWpsouLsinYFflLE86a4ivN4iTWM10MF4rHzqoTs8RUiKCFmTblU+1P/H2jz+DJhMkFajMhdakWlNvUvv/Bae+Vg6cR9P6mOH6e+voSUwU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768826912; c=relaxed/simple; bh=3JZjVUVQiWPZOaeh0sp5ZtCn5it5pdaHxgUfxNJF2sk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ZE5o++HsHcCWNnxfUo08egslkZjbz9mS0pc55d+4UO+SMwOrPBPmCKOPTfgGlosc0y1TlkQ4IQZZMwDUKXj8suQQNEK1aOhPrbHScOV0Em3tdc0B83kyY2vBrQBfH3q1G2IW4GWx03AS0D7/+4uIxVsURjm/6xEFJqPDlUsrW3U= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=L0e8tbFu; 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="L0e8tbFu" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 23885C19424; Mon, 19 Jan 2026 12:48:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1768826911; bh=3JZjVUVQiWPZOaeh0sp5ZtCn5it5pdaHxgUfxNJF2sk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=L0e8tbFueWCCRRZEj+XNIZ96xsoMxc22zmOFdg4HJpbJ4VMxDO9bEOL7A3MwG8SkP 06q5myiHmjj6v4ixJNhgTVA2nbJYWno2+yjRXpN1vJqjDZvmhUE6QTLYZQi1C8b0VE WEbktqvl5KtsARxemi/oHubsolU+djVcp2Y1h6o/TPw/jrvV8SI4IYuob6SPTkl5Z4 zqukl2a0sXywwT7ptonh6El8fez75ZSb1Ujc42WLPoeYdrgpChS4CGVfgq3y/qCa7P ON4Tqo4Ypz3j16FtFSQPfqqXb9qzlijdZN4TBdd8AkRLt+L3xKFkpt0tAtMJeaev0J yryif/qWOMArQ== 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 32/35] KVM: arm64: Extend pKVM page ownership selftests to cover guest donation Date: Mon, 19 Jan 2026 12:46:25 +0000 Message-ID: <20260119124629.2563-33-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> 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 3969a92dc3e2..0d23da060be4 100644 --- a/arch/arm64/kvm/hyp/nvhe/mem_protect.c +++ b/arch/arm64/kvm/hyp/nvhe/mem_protect.c @@ -1757,6 +1757,7 @@ 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; @@ -1776,6 +1777,7 @@ 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); @@ -1788,6 +1790,7 @@ 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(); @@ -1807,6 +1810,7 @@ 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; @@ -1823,6 +1827,7 @@ 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; @@ -1836,6 +1841,23 @@ 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); -- 2.52.0.457.g6b5491de43-goog