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 lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (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 5E006C87FCB for ; Tue, 5 Aug 2025 12:11:47 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.1070433.1434047 (Exim 4.92) (envelope-from ) id 1ujGVs-0004tO-1l; Tue, 05 Aug 2025 12:11:28 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 1070433.1434047; Tue, 05 Aug 2025 12:11:28 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1ujGVr-0004tH-VR; Tue, 05 Aug 2025 12:11:27 +0000 Received: by outflank-mailman (input) for mailman id 1070433; Tue, 05 Aug 2025 12:11:26 +0000 Received: from se1-gles-sth1-in.inumbo.com ([159.253.27.254] helo=se1-gles-sth1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1ujGVq-0004tB-8u for xen-devel@lists.xenproject.org; Tue, 05 Aug 2025 12:11:26 +0000 Received: from mail-ej1-x629.google.com (mail-ej1-x629.google.com [2a00:1450:4864:20::629]) by se1-gles-sth1.inumbo.com (Halon) with ESMTPS id 4e246c69-71f5-11f0-a321-13f23c93f187; Tue, 05 Aug 2025 14:11:24 +0200 (CEST) Received: by mail-ej1-x629.google.com with SMTP id a640c23a62f3a-af93381a1d2so629246566b.3 for ; Tue, 05 Aug 2025 05:11:24 -0700 (PDT) Received: from [10.156.60.236] (ip-037-024-206-209.um08.pools.vodafone-ip.de. [37.24.206.209]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-af91a0def2esm875648366b.61.2025.08.05.05.11.22 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 05 Aug 2025 05:11:23 -0700 (PDT) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 4e246c69-71f5-11f0-a321-13f23c93f187 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=google; t=1754395883; x=1755000683; darn=lists.xenproject.org; h=content-transfer-encoding:in-reply-to:autocrypt:from :content-language:references:cc:to:subject:user-agent:mime-version :date:message-id:from:to:cc:subject:date:message-id:reply-to; bh=48uvMbWr2Eqpw/rQqx7V5062XkF17igkPHHZwRWSEWA=; b=GpIw00eewVohJ1jHHVtMf/xhMUY8vywDbUaDGpN25wO5Mgp43Q20qTBBsiHFbbp22W PdBHBsJEXEHIv8x68wFBkFoDHjOwtr31STOPnotN6vM3Pb3+fYYroebZRRYzDwC2JgdK Wj1fVgcdFL8AVkRD96w49RYe6tjekqbMCjAdeWu2prhTzxGNnGiWUXanpWVvZsuXL/h9 PvytIxeBq8p9f1qhvm+URHGoIOsPasgIS/3jIL1XhFHCbt9reNfC4YQq8aAnfLYwZq8U mtdOh/+AsWXdGfTdSrTMs12XoN5Kzvqf3awZx/fVO+3XxY1GakXWgh/CXCDszB5UtMhq vmbQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1754395883; x=1755000683; h=content-transfer-encoding:in-reply-to:autocrypt:from :content-language:references:cc:to:subject:user-agent:mime-version :date:message-id:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=48uvMbWr2Eqpw/rQqx7V5062XkF17igkPHHZwRWSEWA=; b=B70VnP/Q+JZXlrTEU3WTvP9M/++Cw+aP583uXIWDswoEFboSAmUWdBpYrWBYEdlRrC Tf2uuooJRbpAWXdOrkJVVHCfLUZxHqh3kxBjrLXxpaGZsj3v+Vd9EDLRscyHi3hmggjQ HxMY6uTr7nEsxTaSUW10Cm4pXFvHNQr5fGBCjFUb8VKKcul+ZYk+LhN2WCkyy+P2usnK WKOFH72745+0iJ/ojV0bd5zGTm758rCGSgKusRcws0/2CllWBaPIBH2f2Njfhppjdz9+ V8rxxKuFiW/IDc3Bn3kmP+4VeS1P0l4Xp1jkRjghktqUH+FStwkYnnsL6618rtpGI5+F n+5A== X-Forwarded-Encrypted: i=1; AJvYcCWx8yBWn+xgVYpzrPh6N01ExRUpL2cpkmANs2ufxhSUsS5B/rg2ZcMnNrBuvNU6+eE8Y1+ARTw91Ys=@lists.xenproject.org X-Gm-Message-State: AOJu0YxGTvqpmhc+37XTsCsBBSqVw0Mq/3eeuMprAHudV8Ei3oyI4wfN X5zIYiRmPZJxAu2Ml3lFo6Fj6qdnIvKa1OMN99AFJj+v25/n0qOpefpioAflEAuDsg== X-Gm-Gg: ASbGncv7d0vrIqCSRb/VtI3Uq0lZGlaQffyEZxw4QyHhqXNWsMhMZM4DKS++1mStQe4 7HmsEkCdLIrMXTtb77XmzijzTIpaNmMauxCaINXj4qU7k3TPNKZGyy6otBkVELOLQt9lxcJVdDU 1Mfzfx6GkAM3usQyrhjgOaRILUiaPJZ7LqB5btF59sJUoyXfUiqHm4pDjZVZopAiDI2W5nalyaM xGmHWMP5vgSF7ZkSghnK/FKRIzgLGHUU+iu+vQ9uekaDs0xV85K9lCoXM4Fmpde7RLvFGqyfybI x7+p777pHpmH3Q7AwI+hWwLaWb586wPxzysknn+gWFAlstUW17VEsTBTP7pLlpnVPYVnpihFgZj rTRVRuSji/yGYNHLCKBoduQujQfI5tcfabjgdE0OrJbKSsgu0Mbv3KnuCHIxdpFvR5seV8lhUQ+ e8KNYYWw4= X-Google-Smtp-Source: AGHT+IFGOTIwatLiFtf750sG6ge8Sy9UW56dQB1vOON2wbeFhFVooUiFfC195Q550fiL+SWN51Gd6w== X-Received: by 2002:a17:907:d86:b0:ae0:c976:cc84 with SMTP id a640c23a62f3a-af9400a94a6mr1316212166b.24.1754395883536; Tue, 05 Aug 2025 05:11:23 -0700 (PDT) Message-ID: Date: Tue, 5 Aug 2025 14:11:22 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v4 4/8] pdx: allow per-arch optimization of PDX conversion helpers To: Roger Pau Monne Cc: Andrew Cooper , Anthony PERARD , Michal Orzel , Julien Grall , Stefano Stabellini , xen-devel@lists.xenproject.org References: <20250805095257.74975-1-roger.pau@citrix.com> <20250805095257.74975-5-roger.pau@citrix.com> Content-Language: en-US From: Jan Beulich Autocrypt: addr=jbeulich@suse.com; keydata= xsDiBFk3nEQRBADAEaSw6zC/EJkiwGPXbWtPxl2xCdSoeepS07jW8UgcHNurfHvUzogEq5xk hu507c3BarVjyWCJOylMNR98Yd8VqD9UfmX0Hb8/BrA+Hl6/DB/eqGptrf4BSRwcZQM32aZK 7Pj2XbGWIUrZrd70x1eAP9QE3P79Y2oLrsCgbZJfEwCgvz9JjGmQqQkRiTVzlZVCJYcyGGsD /0tbFCzD2h20ahe8rC1gbb3K3qk+LpBtvjBu1RY9drYk0NymiGbJWZgab6t1jM7sk2vuf0Py O9Hf9XBmK0uE9IgMaiCpc32XV9oASz6UJebwkX+zF2jG5I1BfnO9g7KlotcA/v5ClMjgo6Gl MDY4HxoSRu3i1cqqSDtVlt+AOVBJBACrZcnHAUSuCXBPy0jOlBhxPqRWv6ND4c9PH1xjQ3NP nxJuMBS8rnNg22uyfAgmBKNLpLgAGVRMZGaGoJObGf72s6TeIqKJo/LtggAS9qAUiuKVnygo 3wjfkS9A3DRO+SpU7JqWdsveeIQyeyEJ/8PTowmSQLakF+3fote9ybzd880fSmFuIEJldWxp Y2ggPGpiZXVsaWNoQHN1c2UuY29tPsJgBBMRAgAgBQJZN5xEAhsDBgsJCAcDAgQVAggDBBYC AwECHgECF4AACgkQoDSui/t3IH4J+wCfQ5jHdEjCRHj23O/5ttg9r9OIruwAn3103WUITZee e7Sbg12UgcQ5lv7SzsFNBFk3nEQQCACCuTjCjFOUdi5Nm244F+78kLghRcin/awv+IrTcIWF hUpSs1Y91iQQ7KItirz5uwCPlwejSJDQJLIS+QtJHaXDXeV6NI0Uef1hP20+y8qydDiVkv6l IreXjTb7DvksRgJNvCkWtYnlS3mYvQ9NzS9PhyALWbXnH6sIJd2O9lKS1Mrfq+y0IXCP10eS FFGg+Av3IQeFatkJAyju0PPthyTqxSI4lZYuJVPknzgaeuJv/2NccrPvmeDg6Coe7ZIeQ8Yj t0ARxu2xytAkkLCel1Lz1WLmwLstV30g80nkgZf/wr+/BXJW/oIvRlonUkxv+IbBM3dX2OV8 AmRv1ySWPTP7AAMFB/9PQK/VtlNUJvg8GXj9ootzrteGfVZVVT4XBJkfwBcpC/XcPzldjv+3 HYudvpdNK3lLujXeA5fLOH+Z/G9WBc5pFVSMocI71I8bT8lIAzreg0WvkWg5V2WZsUMlnDL9 mpwIGFhlbM3gfDMs7MPMu8YQRFVdUvtSpaAs8OFfGQ0ia3LGZcjA6Ik2+xcqscEJzNH+qh8V m5jjp28yZgaqTaRbg3M/+MTbMpicpZuqF4rnB0AQD12/3BNWDR6bmh+EkYSMcEIpQmBM51qM EKYTQGybRCjpnKHGOxG0rfFY1085mBDZCH5Kx0cl0HVJuQKC+dV2ZY5AqjcKwAxpE75MLFkr wkkEGBECAAkFAlk3nEQCGwwACgkQoDSui/t3IH7nnwCfcJWUDUFKdCsBH/E5d+0ZnMQi+G0A nAuWpQkjM1ASeQwSHEeAWPgskBQL In-Reply-To: <20250805095257.74975-5-roger.pau@citrix.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit On 05.08.2025 11:52, Roger Pau Monne wrote: > There are four performance critical PDX conversion helpers that do the PFN > to/from PDX and the physical addresses to/from directmap offsets > translations. > > In the absence of an active PDX compression, those functions would still do > the calculations needed, just to return the same input value as no > translation is in place and hence PFN and PDX spaces are identity mapped. > > To reduce the overhead of having to do the pointless calculations allow > architectures to implement the translation helpers in a per-arch header. > Rename the existing conversion functions to add a trailing _xlate suffix, > so that the per-arch headers can define the non suffixed versions. > > Currently only x86 implements meaningful custom handlers to short circuit > the translation when not active, using asm goto. Other architectures use > generic macros that map the non-xlate to the xlate variants to keep the > previous behavior. > > Signed-off-by: Roger Pau Monné Once again: Reviewed-by: Jan Beulich Jan