From patchwork Fri Jan 27 15:40:15 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Paolo Bonzini X-Patchwork-Id: 720809 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3v93my4dl0z9ryk for ; Sat, 28 Jan 2017 03:16:02 +1100 (AEDT) Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="HWBRqeTd"; dkim-atps=neutral Received: from localhost ([::1]:46525 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cX9Bw-00033B-3w for incoming@patchwork.ozlabs.org; Fri, 27 Jan 2017 11:16:00 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:33242) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cX8dc-0002TL-T8 for qemu-devel@nongnu.org; Fri, 27 Jan 2017 10:40:36 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cX8dY-0007ll-UL for qemu-devel@nongnu.org; Fri, 27 Jan 2017 10:40:32 -0500 Received: from mail-wm0-x241.google.com ([2a00:1450:400c:c09::241]:33220) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1cX8dY-0007kh-O6 for qemu-devel@nongnu.org; Fri, 27 Jan 2017 10:40:28 -0500 Received: by mail-wm0-x241.google.com with SMTP id r144so59112040wme.0 for ; Fri, 27 Jan 2017 07:40:28 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references; bh=g3j55NISqxK754dtl75iyKVDotg3TYKl6xnwgL4qIw8=; b=HWBRqeTdOZbWAuWZdPEFZmFo6ZvKhyQu9Uhrv/jR/AJLn/1Lk7cOmqoErwjhHpq3RL JPQ1zDEq53dEhhzf5BIzuy+gR5asZ0+IdJcionavL5sax7ls843EGcGk3kvamMl1cPoN SymdgnebT15W4M7cbed2SI7o9CmvwDGdO3sXZW/VRQHQ+AMPsjIMHSrrplKuvFauslQc dreBJQiuiTtSOq2S0SlibNJKWG+lmPRuh/9Of6CMZgsN+heHQcVJmXB1Q7p2frkzqrzh 4ZtznWvXH0PSyrzheToOSYRPPP5Cgu0fFBlHVlNEp7hObiuCcSjZy6Hf2d9TDrXCzeY0 zV5A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:from:to:cc:subject:date:message-id :in-reply-to:references; bh=g3j55NISqxK754dtl75iyKVDotg3TYKl6xnwgL4qIw8=; b=ILNQiovvbG++argP8ezGYoyrWdfmKIBGKc7ZHZ5GDPlYOXbKAVzQ4p52sHT8+gTLQ6 8P1KjqBh8v8I+cR2oRMyDF/pMb2lll7F6YGuDNoidAw1cXEyR35YekH5tTjBZ6XJriHH QYSvGUMUNDd043NNvKnqLSqXP3qyDmAcWrAzdr7cg99n7Fik3ljdGGPpUM5mX22zO4rl L8HXuawHtPzeGlfOYEd4tKRCTb8Hpf8rb2o8PLuhaCNfO/Ts7vCtmaSVuTIeshdIW0Bh vaj9u1VjOHaO0YdmETrxOj6P2VJwAOx4ZQX9JMyO8osBpQmvSGBEae22JSfVXzRiRwU8 eWOA== X-Gm-Message-State: AIkVDXLqTw07vCfjFlUEKPpoCWdol7q2ghBLYAH5G5JBJ4HDXw+iVDk/YAsEox15vIsaRA== X-Received: by 10.28.167.204 with SMTP id q195mr3464656wme.19.1485531627691; Fri, 27 Jan 2017 07:40:27 -0800 (PST) Received: from 640k.lan (94-39-187-56.adsl-ull.clienti.tiscali.it. [94.39.187.56]) by smtp.gmail.com with ESMTPSA id e16sm8530160wra.36.2017.01.27.07.40.26 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 27 Jan 2017 07:40:27 -0800 (PST) From: Paolo Bonzini To: qemu-devel@nongnu.org Date: Fri, 27 Jan 2017 16:40:15 +0100 Message-Id: <1485531620-121182-5-git-send-email-pbonzini@redhat.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1485531620-121182-1-git-send-email-pbonzini@redhat.com> References: <1485531620-121182-1-git-send-email-pbonzini@redhat.com> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 2a00:1450:400c:c09::241 Subject: [Qemu-devel] [PATCH 4/9] exec: make address_space_cache_destroy idempotent X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mst@redhat.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Clear cache->mr so that address_space_cache_destroy does nothing the second time it is called. Reviewed-by: Stefan Hajnoczi Signed-off-by: Paolo Bonzini Reviewed-by: Philippe Mathieu-Daudé --- exec.c | 1 + 1 file changed, 1 insertion(+) diff --git a/exec.c b/exec.c index f2bed92..5de15cf 100644 --- a/exec.c +++ b/exec.c @@ -3165,6 +3165,7 @@ void address_space_cache_destroy(MemoryRegionCache *cache) xen_invalidate_map_cache_entry(cache->ptr); } memory_region_unref(cache->mr); + cache->mr = NULL; } /* Called from RCU critical section. This function has the same