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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 87302C5AD05 for ; Fri, 7 Aug 2026 21:55:17 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id DC1176B00DB; Fri, 7 Aug 2026 17:53:03 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id D73506B00DD; Fri, 7 Aug 2026 17:53:03 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id C88196B00DE; Fri, 7 Aug 2026 17:53:03 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0016.hostedemail.com [216.40.44.16]) by kanga.kvack.org (Postfix) with ESMTP id 9125B6B00DB for ; Fri, 7 Aug 2026 17:53:03 -0400 (EDT) Received: from smtpin04.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay06.hostedemail.com (Postfix) with ESMTP id 2FC44A0443 for ; Fri, 7 Aug 2026 21:53:03 +0000 (UTC) X-FDA: 85075824246.04.5CD6A11 Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by imf15.hostedemail.com (Postfix) with ESMTP id 36680A000B for ; Fri, 7 Aug 2026 21:53:01 +0000 (UTC) Authentication-Results: imf15.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=IRwBCpot; spf=pass (imf15.hostedemail.com: domain of devnull+ackerleytng.google.com@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=devnull+ackerleytng.google.com@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1786139581; h=from:from:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=TCc1r9LFGMXBcC2eT49sEhtWavsfsAcbxjxR2VN5vIc=; b=AOaxn+rekdf97VcUa8xxf13BY95dmBr4CnO5M5KCzlEeBW0D6heZiBAUUWyzctA8pvMGOY aO7SPXfoJWrsFflEhtjwwEl0Eqi9CpaYitgfgsUVt6Ym13GIaXrpmcjd+W1rO7HHfvIm4o WBJDhTlpatCOqT+gL/7J4jmHCP11GNE= ARC-Authentication-Results: i=1; imf15.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=IRwBCpot; spf=pass (imf15.hostedemail.com: domain of devnull+ackerleytng.google.com@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=devnull+ackerleytng.google.com@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Seal: i=1; a=rsa-sha256; d=hostedemail.com; s=arc-20220608; cv=none; t=1786139581; b=NrTcJEZioLc3aNtP20XNVerrtv1Yz06DNb7Qa1YNDDhHSOLkq2yhyOqse/UXYlCxlb7JXD dIbvVIKMoB8rBrz0IuPb7HMLVozfFCvGjyCU8DIwxCtWp11LcAszx6GBMg6dWNteJmXQJy 24FVHJNpTP4Ul5nFJDMCOkLY9o50vBc= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id B01B844096; Fri, 7 Aug 2026 21:52:50 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPS id 8D2D5C2BCFA; Fri, 7 Aug 2026 21:52:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1786139570; bh=zMXMT+CDwoTrBMuFmmiwUiagBKEjr4ONLUkzSNsyvXY=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=IRwBCpotsMnRqE/t6vavV+M4sse+zzk7TBSXJwNTqlg1x94Vbeksur0htLnBjMrvM 1SwGLaiJ0o73mnoTwcgUEQaZQSv1y/EdT+2UWYvtm0i0D4KUR4XGYjNvTYBiJqrJaO QoMoGIK3AySjaXRQL6LxeRjJM4RkCc2hyAMnq+sL9qq1lVEkSrU2S+ewYBLzUvH8YB oXF1rnmjkAl9vzvwFCegc1hua66gfVuQPsSVHFIgUjN+DdorY5Dn60ffJ2vMBWkB2s Yxt6yhXfo2cz/SKCdnfN3OtqMhkbIc0S593XUDwor3TSQyj4lyMSgCoFcoLw8k1x73 wroXB1cSBBYeA== 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 7611CC5ACD3; Fri, 7 Aug 2026 21:52:50 +0000 (UTC) From: Ackerley Tng via B4 Relay Date: Fri, 07 Aug 2026 14:53:07 -0700 Subject: [PATCH v10 28/41] KVM: selftests: Test conversion flow when INIT_SHARED MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260807-gmem-inplace-conversion-v10-28-2fc18ee6d3ba@google.com> References: <20260807-gmem-inplace-conversion-v10-0-2fc18ee6d3ba@google.com> In-Reply-To: <20260807-gmem-inplace-conversion-v10-0-2fc18ee6d3ba@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, 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, liam@infradead.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 , Barry Song , Axel Rasmussen , Yuanchu Xie , Wei Xu , Youngjun Park , Qi Zheng , Shakeel Butt , Kiryl Shutsemau , Baoquan He , Jason Gunthorpe , John Hubbard , Peter Xu , tarunsahu@google.com, Jason Gunthorpe , Vlastimil Babka , Baoquan He 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=1786139565; l=1820; i=ackerleytng@google.com; s=20260225; h=from:subject:message-id; bh=LCMkQdX+H3WVboFtkpu0Izn3eeZarl7aVfYLiu9r/3g=; b=Lg18aCDxNaQup8NnlNTU3r1S8o1MRkDWstNEis+KSXSyH1OUBseYjRh3CJcj4zFmpEdW+XyOJ IxkFnrEGoYoAIKkN6uEs1bKZAjbgT73XPsOUXQEIVLnllJdawedKU53 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 X-Rspam-User: X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: 36680A000B X-Stat-Signature: xg5pjw9bzhun71wizfoabosyeng7t4j4 X-HE-Tag: 1786139581-158527 X-HE-Meta: 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 b4YNPOb4 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: 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. Co-developed-by: Sean Christopherson Signed-off-by: Sean Christopherson Reviewed-by: Fuad Tabba Tested-by: Shivank Garg Signed-off-by: Ackerley Tng --- .../selftests/kvm/x86/guest_memfd_conversions_test.c | 13 +++++++++++++ 1 file changed, 13 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 77f95d49349ce..4c20d3d8e9349 100644 --- a/tools/testing/selftests/kvm/x86/guest_memfd_conversions_test.c +++ b/tools/testing/selftests/kvm/x86/guest_memfd_conversions_test.c @@ -97,6 +97,12 @@ 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; @@ -188,6 +194,13 @@ 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[]) { TEST_REQUIRE(kvm_check_cap(KVM_CAP_VM_TYPES) & BIT(KVM_X86_SW_PROTECTED_VM)); -- 2.55.0.654.g21b8a5bc05-goog