From patchwork Sun Dec 25 12:48:26 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hao Peng X-Patchwork-Id: 36480 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a5d:4e01:0:0:0:0:0 with SMTP id p1csp506411wrt; Sun, 25 Dec 2022 04:50:34 -0800 (PST) X-Google-Smtp-Source: AMrXdXvSC6JioSc8ASMWK0TD7wf5bQltG0tohJUu7Os6IKBRa1gt4Ju9aOncblBfzJWncHV7Fh6F X-Received: by 2002:a17:90a:2bcd:b0:225:be4c:2586 with SMTP id n13-20020a17090a2bcd00b00225be4c2586mr11191640pje.45.1671972633871; Sun, 25 Dec 2022 04:50:33 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1671972633; cv=none; d=google.com; s=arc-20160816; b=MmuJn49RJXT8qeLyFAZkPHBlqpvIgBZRSb/sZ9eAHQT017WjaxkoZJT5DG0g+UsCal A3TRD7YoSZNRsOTrah+wnDR4nll+2CAx4871oc3u0y8emVgXGbVm/AQQ/c8kLjm8YxCn 7iLyFB+bSANc6A4VVZdTYsck/INfeAvAo+86+6cbB0F2LowhUbfWRrl46pS3xT0X9fFI vRL1my4PAEg0SaUYN/FdEUJ/YzFijmRYDe6gosvG+UcghoBmffLJnsMhkC89W7cnCij0 fOJZaHULrzQ6RIpsUa3bn7e+Qj1ssgKNi9hBqB5F1PijRbcuFlGmdBMIYC/IzVkxAnY7 2SwQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:cc:to:subject:message-id:date:from:mime-version :dkim-signature; bh=Wk1BYg8FM+pEOgDUvLnl6H2w5OLbpMOtJjAehLPuXXg=; b=L30Y/kV7Tk42ZEVExq9yWiKlC+L3rzSna2QU6Ntsup+eRryO1/Rd0MsunETE6JkV+m iFT18q+MVkYkptdiqGX07w2NYQk+KP1mhqO3ItJeN/OM25pr936llKWRXppCRcQbH121 nZm6ucQ2zJ24PENlDq/s3dEiMDeePsZEMd1YcwXAZYj8TWAc4FlS5gQwT9sttLHmK7CC WhQuW7s+43MA+GrdbByk/VL+/FJYxAmFy1v8qF52tNHCDpk7eLkmVfiE8oSPrqTaSRog Z0JngUDmLOXxZoXiYoTmb3dt2Izf3Ph04B/ONeeOdAFzqUsRiZqNFDpBfdRS5GeNOS+K EZPw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@gmail.com header.s=20210112 header.b=YHiNy0Am; 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=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id k1-20020a633d01000000b00462ed110adbsi9647201pga.316.2022.12.25.04.50.16; Sun, 25 Dec 2022 04:50:33 -0800 (PST) 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=@gmail.com header.s=20210112 header.b=YHiNy0Am; 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=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229769AbiLYMs2 (ORCPT + 99 others); Sun, 25 Dec 2022 07:48:28 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58616 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229445AbiLYMs0 (ORCPT ); Sun, 25 Dec 2022 07:48:26 -0500 Received: from mail-wr1-x42e.google.com (mail-wr1-x42e.google.com [IPv6:2a00:1450:4864:20::42e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7D2F8F60; Sun, 25 Dec 2022 04:48:25 -0800 (PST) Received: by mail-wr1-x42e.google.com with SMTP id d4so287419wrw.6; Sun, 25 Dec 2022 04:48:25 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=cc:to:subject:message-id:date:from:mime-version:from:to:cc:subject :date:message-id:reply-to; bh=Wk1BYg8FM+pEOgDUvLnl6H2w5OLbpMOtJjAehLPuXXg=; b=YHiNy0AmTytHP/zM9DGOTXAdMVIWPHQKGN7JAJo6k+uIomMU75y8IHyPEW+ES0OPdr M/+FA3SefMb7j5210TxukQhIYcpJOzlHYzq/dJ2mbqVM7OC90BvO2+tNBU7RXjHfGHpA 8MV3QQhFxANj+r9fYGZjR7hR5SF1/LOP+/OBVJeKHB5EJnkLIhpe99srhnuDwIRFpGeb 58S19os2iTMy2PrOAXYL2nYfWnx2ZFrdxSRgodtYPV8ddBtikcqUxqbxLlemcUJR0j1y PBOtRSXMPqsp9BWYKw/nq8l9UedKeXsYf8ZR/tt+OzA9ebBGfVYHL6n3RSznSiQy+J/3 WXYw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:subject:message-id:date:from:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=Wk1BYg8FM+pEOgDUvLnl6H2w5OLbpMOtJjAehLPuXXg=; b=omIRn/X/YBL7n6QTteyVXhX6Rck9IqlJHaLTL+hfcJiybfw7+LROX5A7ueC+i4YlfS 92KGhFNtT/Zr8HgnLF3FyHQEBDLWx8h8VIgfJc6cEaQmZiW+YfLvlJseyE0JCAqqTJyP YSm9PJL+1c/lOouOVAjmq6ENK2FQMB7Yqs/AwL/Pc6n4cJHlyxzHGEu3PK13za/brsql AkOPKmUoBj7BdAi4cWip1F+1w8J7pd36/O6OO7GOroKaDUsgYeUrPkcgLCdtwvpGik0O APQpY/sWkiimbJ7GbDNVImvG1wNtWgpwEouSFMf20Owz4tZJjrEIsGTq4opBqFVlzugJ M3Qg== X-Gm-Message-State: AFqh2kqQbBb4A04RbsN31miqBYNu79V1D7RnEjn0ByhGeJGGgPrgr++1 vN24qCEftud4dq3uh644MZqGYF7QxPPEa5VBePU= X-Received: by 2002:a5d:4e4b:0:b0:242:4ab7:5a19 with SMTP id r11-20020a5d4e4b000000b002424ab75a19mr275499wrt.389.1671972503776; Sun, 25 Dec 2022 04:48:23 -0800 (PST) MIME-Version: 1.0 From: Hao Peng Date: Sun, 25 Dec 2022 20:48:26 +0800 Message-ID: Subject: [PATCH v2] KVM: use unified srcu interface function To: pbonzini@redhat.com Cc: kvm@vger.kernel.org, Sean Christopherson , linux-kernel@vger.kernel.org X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM, RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS autolearn=ham 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: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1753190376701313433?= X-GMAIL-MSGID: =?utf-8?q?1753190376701313433?= From: Peng Hao kvm->irq_routing is protected by kvm->irq_srcu. Signed-off-by: Peng Hao --- virt/kvm/irqchip.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) -- 2.27.0 diff --git a/virt/kvm/irqchip.c b/virt/kvm/irqchip.c index 1e567d1f6d3d..d3ccfe922880 100644 --- a/virt/kvm/irqchip.c +++ b/virt/kvm/irqchip.c @@ -18,6 +18,10 @@ #include #include +#define kvm_get_irq_routing(kvm) \ + srcu_dereference_check((kvm)->irq_routing, &(kvm)->irq_srcu, \ + lockdep_is_held(&(kvm)->irq_lock)) + int kvm_irq_map_gsi(struct kvm *kvm, struct kvm_kernel_irq_routing_entry *entries, int gsi) { @@ -25,8 +29,7 @@ int kvm_irq_map_gsi(struct kvm *kvm, struct kvm_kernel_irq_routing_entry *e; int n = 0; - irq_rt = srcu_dereference_check(kvm->irq_routing, &kvm->irq_srcu, - lockdep_is_held(&kvm->irq_lock)); + irq_rt = kvm_get_irq_routing(kvm); if (irq_rt && gsi < irq_rt->nr_rt_entries) { hlist_for_each_entry(e, &irq_rt->map[gsi], link) { entries[n] = *e; @@ -216,7 +219,7 @@ int kvm_set_irq_routing(struct kvm *kvm, } mutex_lock(&kvm->irq_lock); - old = rcu_dereference_protected(kvm->irq_routing, 1); + old = kvm_get_irq_routing(kvm); rcu_assign_pointer(kvm->irq_routing, new); kvm_irq_routing_update(kvm); kvm_arch_irq_routing_update(kvm);