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[2620:137:e000::1:20]) by mx.google.com with ESMTP id f2-20020a50ee82000000b0051e3cc20d8bsi3108706edr.158.2023.07.11.16.13.24; Tue, 11 Jul 2023 16:13:47 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@google.com header.s=20221208 header.b=x3HRX0SK; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=google.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231628AbjGKXBi (ORCPT + 99 others); Tue, 11 Jul 2023 19:01:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43346 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229972AbjGKXBg (ORCPT ); Tue, 11 Jul 2023 19:01:36 -0400 Received: from mail-pl1-x64a.google.com (mail-pl1-x64a.google.com [IPv6:2607:f8b0:4864:20::64a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6308610CF for ; Tue, 11 Jul 2023 16:01:35 -0700 (PDT) Received: by mail-pl1-x64a.google.com with SMTP id d9443c01a7336-1b8a7735231so64505355ad.1 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=XApTZNe07CkJrGsmVyHGfdlKLuV8h8dc00z1de8+L5Tl3jmIDuXPFjOIUcXPXQG8Va 50bwMYpHBbsWmkEJL3vTnzpw0JYvsS+kpTYgt2Odh989qfnd4sKlJ26wt7JGJ9fiQyGe PgLYlk3FcUKQcGFgPsb+9tyS+gcHQbWznpMvrTAvpuWHO7cAhhNLMVibtPBttEOleL/R 3J0L3Af7d0ZRaaL8fG+HaEyRgQ9G6kU9S0JWYEnUnoT2dCPrGz6rP+vCDXbPQ6s3KpiZ EiCmOTkhIcU/lBVKquBSSeuF2ctjkNuGLiZNvfOaFhFX9vm2pFNZb7BzGOYI/6zAaIlV gVeg== X-Gm-Message-State: ABy/qLaLCX5b1XV1OW0xbpDvA6mgMhSJ5jsVYRC0jtmLDnQRrqh1Mu8Y oypXPQLhGNL7u2LMDp9hzxSikobXOzE= 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 X-Spam-Status: No, score=-9.6 required=5.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, RCVD_IN_DNSWL_BLOCKED,SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE, USER_IN_DEF_DKIM_WL autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1771167785705182693 X-GMAIL-MSGID: 1771167785705182693 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