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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D67F9EB64DC for ; Tue, 11 Jul 2023 23:01:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231486AbjGKXBh (ORCPT ); Tue, 11 Jul 2023 19:01:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43344 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229963AbjGKXBg (ORCPT ); Tue, 11 Jul 2023 19:01:36 -0400 Received: from mail-pl1-x649.google.com (mail-pl1-x649.google.com [IPv6:2607:f8b0:4864:20::649]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5AB71E60 for ; Tue, 11 Jul 2023 16:01:35 -0700 (PDT) Received: by mail-pl1-x649.google.com with SMTP id d9443c01a7336-1b8ad356f6fso64574975ad.3 for ; Tue, 11 Jul 2023 16:01:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1689116495; x=1691708495; h=cc:to:from:subject:message-id:mime-version:date:reply-to:from:to:cc :subject:date:message-id:reply-to; bh=ArFj1o9NSdPQxx1m9ygKjSQno20NdD8JCdPYTouZybg=; b=x3HRX0SKKbx4+NkpXEbDDUTRypVaGi5VgoGmKzAPfyHkaq+gWEOmJea0l+ewoaRCoI MO0KeNEAbjAVDfwPZsGrevdQcfi1D23vyyqcKUfZ9uuB1Mp1DpNJFiM+rupUsres0QDw U4GVVXSxS1rEzthJHabrf1jVkEVc4hMyLnCLHC/qrZZly88AWh0Fn5bPdfV14ch1ap1q M0LOUGuRRtXHH0IHWpipEXuSwvQDCv9+aMUrqtrbEc9ijPXBDT4lPCc8NzGyjtxQIFrZ M2q4eqVEWBtxTQBkSW96Zv56mj0cnwERzxiQ/8KWp0+vM9060eSDFwE2f7jzcQj9c8xl oj7g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1689116495; x=1691708495; h=cc:to:from:subject:message-id:mime-version:date:reply-to :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=ArFj1o9NSdPQxx1m9ygKjSQno20NdD8JCdPYTouZybg=; b=CNVRITVWGhlnxkQTTQgZjkh9dhDMVS3R5Q/06ddNApuLaUzijU/5noBuP3EmM7dtSC Q4ElnK4IipUid4OfSrf1OIhfOPIQwiD0UK+oXnChjfxgJLZ6GP+47keARQ6nlZjOhViN jTVU1rb0vLK6im/AFP6B0gSUeCh1vjO5Y57Yaa8LhCEWaaeu8fvyefp0NHz261tNBrJR Nsxm1Jha55njwHn0KwIOEl6nVRVRWOS5TMECuK2FoijFLnk4Ll647E/YPVVsdPi8HmMA 6sH9QlZXtOVqfXWA+b4E8WGGPvRuIYqH6PJjksAZvqBj5iIBtEXY8YVgX/vFvl5KkH5f ZRKw== X-Gm-Message-State: ABy/qLbfhu1EQzIbKBWZ0L8idKw3WEaZZHVnIG7ZQQme46JzFCtlL/4m fvaW1SNrnmofEhsAOZiuwuTraZwbJUY= X-Google-Smtp-Source: APBJJlEnsGjdY86SpJV8AfP5O0Y+w0eDh5v2W1Ha3ueE6ESzD8l1xlfCwxQzysRlxUoU47FTo8Gi3Z0O4EQ= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5c37]) (user=seanjc job=sendgmr) by 2002:a17:902:aa09:b0:1b8:95fc:d0f with SMTP id be9-20020a170902aa0900b001b895fc0d0fmr12256129plb.7.1689116494750; Tue, 11 Jul 2023 16:01:34 -0700 (PDT) Reply-To: Sean Christopherson Date: Tue, 11 Jul 2023 16:01:24 -0700 Mime-Version: 1.0 X-Mailer: git-send-email 2.41.0.255.g8b1d071c50-goog Message-ID: <20230711230131.648752-1-seanjc@google.com> Subject: [PATCH 0/7] KVM: Grab KVM references for stats fds From: Sean Christopherson To: Paolo Bonzini Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Zheng Zhang , Kees Cook , Sean Christopherson Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Grab a reference to the VM when handing a userspace stats fds for VMs and vCPUs to ensure the stats files don't outlive the VM and its vCPUs, and add a regression testcase in selftests. Sean Christopherson (7): KVM: Grab a reference to KVM for VM and vCPU stats file descriptors KVM: selftests: Use pread() to read binary stats header KVM: selftests: Clean up stats fd in common stats_test() helper KVM: selftests: Explicitly free vcpus array in binary stats test KVM: selftests: Verify userspace can create "redundant" binary stats files KVM: selftests: Verify stats fd can be dup()'d and read KVM: selftests: Verify stats fd is usable after VM fd has been closed .../selftests/kvm/include/kvm_util_base.h | 6 +- .../selftests/kvm/kvm_binary_stats_test.c | 72 ++++++++++++------- virt/kvm/kvm_main.c | 24 +++++++ 3 files changed, 75 insertions(+), 27 deletions(-) base-commit: 255006adb3da71bb75c334453786df781b415f54 -- 2.41.0.255.g8b1d071c50-goog