From patchwork Tue Apr 30 16:49:32 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Edgar E. Iglesias" X-Patchwork-Id: 13649684 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 lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0F0DDC4345F for ; Tue, 30 Apr 2024 16:53:51 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1s1qgo-0007Jw-Gv; Tue, 30 Apr 2024 12:50:46 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1s1qgc-0006Qv-Ne for qemu-devel@nongnu.org; Tue, 30 Apr 2024 12:50:37 -0400 Received: from mail-lf1-x12f.google.com ([2a00:1450:4864:20::12f]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1s1qgY-00062m-BI for qemu-devel@nongnu.org; Tue, 30 Apr 2024 12:50:32 -0400 Received: by mail-lf1-x12f.google.com with SMTP id 2adb3069b0e04-51c077cfc09so7022071e87.2 for ; Tue, 30 Apr 2024 09:50:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1714495828; x=1715100628; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=j0mqQo2QzUWZGYHpYGMWslGBm8Oap0E4Z0qNuGo27BE=; b=R4R+riu6gcSBuWO7Dgjrh6Vb2Z3Meec/GS/vh+1BU+MFkVAj1QdHMMtXwCp75S/sLm IeHNnvQsXjLams01u8PzlLZ+IRG7xDLAxf0dY8dP7tejgjh33QDqhajsWUH1qGz8NEGK pagSsgruDDJwYYb+bU/xsBQ/X1FXmAu8BoYXytd1MnpIx4JKXna5Ycou4uZmu03zG5X0 /h3D5kzI6q+c9ILpgWXtlYwnbSTZhXyOSSXHBhPi+/1jIoOad7+hP4X7H6MtdwkE4upm vqCL+edBpUl26LdXwn6os5SaUN/IzPgyuQY168h4ZESqioYBF9YVw/45Mmbf8d4BpLSH Brpw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1714495828; x=1715100628; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=j0mqQo2QzUWZGYHpYGMWslGBm8Oap0E4Z0qNuGo27BE=; b=jnLWEomAqyvXzsfbW7fdUf7Pncm5Xi65TZqNbi1PrJm2F8GCbvjClsAJJWj4qidkgu 2Wgl7Gvvekbj/T7II0dnzUdpjsCyvL/lYs+o4emOoZ3FYTYUgWFEZJRDhVXrswKOe+T8 AeOpKsAlxDvlGh38wOwg63UZDuxay38OgCuTLr8Dj8SWCZ2V0UflPbzjDZWNhJyLBOU6 4Gz+PNGmprmIpAcETof4MbLeE2RZyPSrSddUW5+7kz1adUWwIEIIGBEOOlozolczAwCL kh1hGBsB2D71V9xyMsJSm8JRnoQVJA8d9lcO4D/kd7jCjsiMSzYzjvpkB+pitTWWyeYg v4Sw== X-Gm-Message-State: AOJu0YznPcJzi/qJ3yIFFPuyUomw5vyWCsJmv/w0Rt82QefRsVspW2zV /Mcx3w43IKTLpC1Nf+vrMe0lB4/hQwG0yiJbMQdwQQBCVIZTHvBGQrGx1pnl X-Google-Smtp-Source: AGHT+IGQCPL9JgHmD1RLCqV4syaus5YjfpEwlBgT76+qyDY37l2dNAYgiSCfXBlfwOjb2G8RuoFmJQ== X-Received: by 2002:ac2:4c4e:0:b0:51d:1830:8380 with SMTP id o14-20020ac24c4e000000b0051d18308380mr58334lfk.8.1714495827628; Tue, 30 Apr 2024 09:50:27 -0700 (PDT) Received: from gmail.com (213-67-3-247-no600.tbcn.telia.com. [213.67.3.247]) by smtp.gmail.com with ESMTPSA id u17-20020a196a11000000b0051aaffe4f1dsm4252114lfu.79.2024.04.30.09.50.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 30 Apr 2024 09:50:26 -0700 (PDT) From: "Edgar E. Iglesias" To: qemu-devel@nongnu.org Cc: edgar.iglesias@gmail.com, sstabellini@kernel.org, jgross@suse.com, "Edgar E. Iglesias" , Anthony Perard , Paul Durrant , xen-devel@lists.xenproject.org Subject: [PATCH v4 10/17] xen: mapcache: Break out xen_map_cache_init_single() Date: Tue, 30 Apr 2024 18:49:32 +0200 Message-Id: <20240430164939.925307-11-edgar.iglesias@gmail.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20240430164939.925307-1-edgar.iglesias@gmail.com> References: <20240430164939.925307-1-edgar.iglesias@gmail.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::12f; envelope-from=edgar.iglesias@gmail.com; helo=mail-lf1-x12f.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: "Edgar E. Iglesias" Break out xen_map_cache_init_single() in preparation for adding multiple map caches. Signed-off-by: Edgar E. Iglesias Reviewed-by: Stefano Stabellini --- hw/xen/xen-mapcache.c | 53 ++++++++++++++++++++++++++----------------- 1 file changed, 32 insertions(+), 21 deletions(-) diff --git a/hw/xen/xen-mapcache.c b/hw/xen/xen-mapcache.c index dd08cd296b..72a7e25e3e 100644 --- a/hw/xen/xen-mapcache.c +++ b/hw/xen/xen-mapcache.c @@ -93,23 +93,44 @@ static inline int test_bits(int nr, int size, const unsigned long *addr) return 0; } -void xen_map_cache_init(phys_offset_to_gaddr_t f, void *opaque) +static MapCache *xen_map_cache_init_single(phys_offset_to_gaddr_t f, + void *opaque, + unsigned long max_size) { unsigned long size; - struct rlimit rlimit_as; + MapCache *mc; + + mc = g_new0(MapCache, 1); + + mc->phys_offset_to_gaddr = f; + mc->opaque = opaque; + qemu_mutex_init(&mc->lock); + + QTAILQ_INIT(&mc->locked_entries); - mapcache = g_new0(MapCache, 1); + mc->max_mcache_size = max_size; - mapcache->phys_offset_to_gaddr = f; - mapcache->opaque = opaque; - qemu_mutex_init(&mapcache->lock); + mc->nr_buckets = + (((mc->max_mcache_size >> XC_PAGE_SHIFT) + + (1UL << (MCACHE_BUCKET_SHIFT - XC_PAGE_SHIFT)) - 1) >> + (MCACHE_BUCKET_SHIFT - XC_PAGE_SHIFT)); - QTAILQ_INIT(&mapcache->locked_entries); + size = mc->nr_buckets * sizeof(MapCacheEntry); + size = (size + XC_PAGE_SIZE - 1) & ~(XC_PAGE_SIZE - 1); + trace_xen_map_cache_init(mc->nr_buckets, size); + mc->entry = g_malloc0(size); + return mc; +} + +void xen_map_cache_init(phys_offset_to_gaddr_t f, void *opaque) +{ + struct rlimit rlimit_as; + unsigned long max_mcache_size; if (geteuid() == 0) { rlimit_as.rlim_cur = RLIM_INFINITY; rlimit_as.rlim_max = RLIM_INFINITY; - mapcache->max_mcache_size = MCACHE_MAX_SIZE; + max_mcache_size = MCACHE_MAX_SIZE; } else { getrlimit(RLIMIT_AS, &rlimit_as); rlimit_as.rlim_cur = rlimit_as.rlim_max; @@ -119,24 +140,14 @@ void xen_map_cache_init(phys_offset_to_gaddr_t f, void *opaque) " memory is not infinity"); } if (rlimit_as.rlim_max < MCACHE_MAX_SIZE + NON_MCACHE_MEMORY_SIZE) { - mapcache->max_mcache_size = rlimit_as.rlim_max - - NON_MCACHE_MEMORY_SIZE; + max_mcache_size = rlimit_as.rlim_max - NON_MCACHE_MEMORY_SIZE; } else { - mapcache->max_mcache_size = MCACHE_MAX_SIZE; + max_mcache_size = MCACHE_MAX_SIZE; } } + mapcache = xen_map_cache_init_single(f, opaque, max_mcache_size); setrlimit(RLIMIT_AS, &rlimit_as); - - mapcache->nr_buckets = - (((mapcache->max_mcache_size >> XC_PAGE_SHIFT) + - (1UL << (MCACHE_BUCKET_SHIFT - XC_PAGE_SHIFT)) - 1) >> - (MCACHE_BUCKET_SHIFT - XC_PAGE_SHIFT)); - - size = mapcache->nr_buckets * sizeof (MapCacheEntry); - size = (size + XC_PAGE_SIZE - 1) & ~(XC_PAGE_SIZE - 1); - trace_xen_map_cache_init(mapcache->nr_buckets, size); - mapcache->entry = g_malloc0(size); } static void xen_remap_bucket(MapCache *mc,