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 4DA433B2FDF; Tue, 28 Apr 2026 23:25:20 +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=1777418720; cv=none; b=GnMzpEYg4a0CEanoCZzJGKgrR9wFHfhY83aqHywJgG/C3naG2xTpDWIpPaya67N76i3VJPI1ztNdzgMkFa7+HdB0Co0/yn7kv6pzmkXwhmWFXk7MNH3ke7UE97LmsSeAtXHmGPo9EETBWl2+nsYih0u46+frE9XlFWuN4JCPQsg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777418720; c=relaxed/simple; bh=Nf2uujmY9VcGyGCk6p4BfNja9Ll9DL7iKX2wZF1qGok=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=deCY1f/n6va331WYAjC8u2OX6nedPLgt5Jfn0LhltNHUJd+XgRzoiAVyDE27rlC7hfhvw2u+pEPiOmyOuxtgKyoKy8tvkVBbIuIlFIrKM005sQAv3ecTYrtLQzr+vIku2Dll8Y96HGwXIf9aBEJI8d5uGCOxeTwCgko5p+fOkwQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=WrF+40OJ; 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="WrF+40OJ" Received: by smtp.kernel.org (Postfix) with ESMTPS id 2FA8BC4AF18; Tue, 28 Apr 2026 23:25:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1777418720; bh=Nf2uujmY9VcGyGCk6p4BfNja9Ll9DL7iKX2wZF1qGok=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=WrF+40OJeQqWWnSmUHqpMz3NFp9zHeX5q9ij7o6oAPIS4XEJZOG8keQzgMpuXb5zj Wqkg/urSXGlB/2vGQJqwSMbBsCMmLrGYAs2zSkEXEcsdP4wLy+cbLgTCSCpV8MwpkV icSfPBUIFSYL+6v8mCnnVbWQvXwmsR1ND6XgJuhwVd/C6wnQ/3N89jgObvctEekx5l NwnnnitD+95TGli4j2lvygH7r9OAKloP76A+uWf53wEbt8cmGkZfiQDTbeFoWpZsg2 cH6yGyhj8zkLefU3HwA4/Fe24NXDjkLWkhdSHRILrMZBoszWR8ST3AaUMhelWF3Hxd xzBeQ8NielxTA== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 22A65FF8875; Tue, 28 Apr 2026 23:25:20 +0000 (UTC) From: Ackerley Tng via B4 Relay Date: Tue, 28 Apr 2026 16:25:30 -0700 Subject: [PATCH RFC v5 35/53] KVM: selftests: Test conversion flow when INIT_SHARED Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260428-gmem-inplace-conversion-v5-35-d8608ccfca22@google.com> References: <20260428-gmem-inplace-conversion-v5-0-d8608ccfca22@google.com> In-Reply-To: <20260428-gmem-inplace-conversion-v5-0-d8608ccfca22@google.com> To: aik@amd.com, andrew.jones@linux.dev, binbin.wu@linux.intel.com, brauner@kernel.org, chao.p.peng@linux.intel.com, david@kernel.org, ira.weiny@intel.com, jmattson@google.com, jthoughton@google.com, michael.roth@amd.com, oupton@kernel.org, pankaj.gupta@amd.com, qperret@google.com, rick.p.edgecombe@intel.com, rientjes@google.com, shivankg@amd.com, steven.price@arm.com, tabba@google.com, willy@infradead.org, wyihan@google.com, yan.y.zhao@intel.com, forkloop@google.com, pratyush@kernel.org, suzuki.poulose@arm.com, aneesh.kumar@kernel.org, Paolo Bonzini , Sean Christopherson , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Steven Rostedt , Masami Hiramatsu , Mathieu Desnoyers , Jonathan Corbet , Shuah Khan , Shuah Khan , Vishal Annapurve , Andrew Morton , Chris Li , Kairui Song , Kemeng Shi , Nhat Pham , Baoquan He , Barry Song , Axel Rasmussen , Yuanchu Xie , Wei Xu , Youngjun Park , Qi Zheng , Shakeel Butt , Kiryl Shutsemau , Jason Gunthorpe , Vlastimil Babka Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-mm@kvack.org, linux-coco@lists.linux.dev, Ackerley Tng X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1777418714; l=1651; i=ackerleytng@google.com; s=20260225; h=from:subject:message-id; bh=d3diFsGfXmDo2adM4qAr4NDT6FCtct/he0WqILialfA=; b=F2ouDv5e83vQrUQe+V+yDI0Ntg/VBAboJtH84k8Y287idIlHcPCLvX47Bctui/LXKS9D7iBMn 7LsbwypaN9wBM0XghTDCutRLzAiGYO5GECLGthQFpEKChNvrFoy+hi4 X-Developer-Key: i=ackerleytng@google.com; a=ed25519; pk=sAZDYXdm6Iz8FHitpHeFlCMXwabodTm7p8/3/8xUxuU= X-Endpoint-Received: by B4 Relay for ackerleytng@google.com/20260225 with auth_id=649 X-Original-From: Ackerley Tng Reply-To: ackerleytng@google.com From: Ackerley Tng Add a test case to verify that conversions between private and shared memory work correctly when the memory is initially created as shared. Signed-off-by: Ackerley Tng Co-developed-by: Sean Christopherson Signed-off-by: Sean Christopherson --- .../testing/selftests/kvm/x86/guest_memfd_conversions_test.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/tools/testing/selftests/kvm/x86/guest_memfd_conversions_test.c b/tools/testing/selftests/kvm/x86/guest_memfd_conversions_test.c index 1299935689e5b..40ac1b3769af1 100644 --- a/tools/testing/selftests/kvm/x86/guest_memfd_conversions_test.c +++ b/tools/testing/selftests/kvm/x86/guest_memfd_conversions_test.c @@ -99,6 +99,12 @@ static void __gmem_conversions_##test(test_data_t *t, int nr_pages) \ #define GMEM_CONVERSION_TEST_INIT_PRIVATE(test) \ __GMEM_CONVERSION_TEST_INIT_PRIVATE(test, 1) +#define __GMEM_CONVERSION_TEST_INIT_SHARED(test, __nr_pages) \ + GMEM_CONVERSION_TEST(test, __nr_pages, GUEST_MEMFD_FLAG_INIT_SHARED) + +#define GMEM_CONVERSION_TEST_INIT_SHARED(test) \ + __GMEM_CONVERSION_TEST_INIT_SHARED(test, 1) + struct guest_check_data { void *mem; char expected_val; @@ -192,6 +198,12 @@ GMEM_CONVERSION_TEST_INIT_PRIVATE(init_private) test_convert_to_private(t, 0, 'C', 'E'); } +GMEM_CONVERSION_TEST_INIT_SHARED(init_shared) +{ + test_shared(t, 0, 0, 'A', 'B'); + test_convert_to_private(t, 0, 'B', 'C'); + test_convert_to_shared(t, 0, 'C', 'D', 'E'); +} int main(int argc, char *argv[]) { -- 2.54.0.545.g6539524ca2-goog