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 A37EAC3DA59 for ; Mon, 22 Jul 2024 12:58:43 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.761914.1171968 (Exim 4.92) (envelope-from ) id 1sVscc-0001Y6-Qk; Mon, 22 Jul 2024 12:58:34 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 761914.1171968; Mon, 22 Jul 2024 12:58:34 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1sVscc-0001Xz-Mi; Mon, 22 Jul 2024 12:58:34 +0000 Received: by outflank-mailman (input) for mailman id 761914; Mon, 22 Jul 2024 12:58:33 +0000 Received: from se1-gles-flk1-in.inumbo.com ([94.247.172.50] helo=se1-gles-flk1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1sVscb-0001Xt-1m for xen-devel@lists.xenproject.org; Mon, 22 Jul 2024 12:58:33 +0000 Received: from mail-ed1-x535.google.com (mail-ed1-x535.google.com [2a00:1450:4864:20::535]) by se1-gles-flk1.inumbo.com (Halon) with ESMTPS id 18941497-482a-11ef-8776-851b0ebba9a2; Mon, 22 Jul 2024 14:58:31 +0200 (CEST) Received: by mail-ed1-x535.google.com with SMTP id 4fb4d7f45d1cf-5a2ffc346ceso2942208a12.1 for ; Mon, 22 Jul 2024 05:58:31 -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-a7a3c785e12sm422108066b.25.2024.07.22.05.58.29 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 22 Jul 2024 05:58:30 -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: 18941497-482a-11ef-8776-851b0ebba9a2 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=google; t=1721653110; x=1722257910; 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=SfbkEoPW8DpchiHkPo6RKjHVE7QeBc5SXTNAX9kVoJk=; b=GMWURcWbu8+mGpSI9b3gCRSSO7kfujGNkzfA5YwJ5bNehTOMLXPcgHAbtk7iXRENik F6znB7I2Dv5JSCRTRA2VGvBkbXVwSAi15jSgVpLeKF+g7nhmobhucKVfXIeIw17b3pVj b2/czoa6Hv3gB/Es5+XT3vBNhmlrI0cKbSnTlh8ysXhWOBe4OzgRn76s4lyExP6L6NXq xM8nBrx8ImP9UimU5T39crFmPyG311FQSVx/ez8MpP1MAfQJeEKJKuQKII+S617QlqAe Fobrd5mRiMfxu2rN4CtT4nt7U5YXXhKwGi6qEgqlzJzfqDEWNrc6P5xo1yMb1LPG0TMH xnPQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1721653110; x=1722257910; 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=SfbkEoPW8DpchiHkPo6RKjHVE7QeBc5SXTNAX9kVoJk=; b=IoxDcmrMCz2gKY6rG0KiXblcJUTAUHKe7YcOYSKk3eRt91k7WT+Nb+jhLUAtmVlGF1 En8MtxGrkIuzLrXv0C0NJhxfTf66B9+kdCXnxfN7joJYA8t7i/lf41YkgNyebVCavZmr kKMWbAqeNW++4OWt5fcfn9QIpZnnwDY0GNvQ5O5gdP2yWlRl7qUxl8Rv9AGBwuhpWP0m hPaMX69ihm3DAlE3DV2KK1b33UK3RxT2/EU93I7YPK8oaeyfC+xVW0LSQuH9GGV5NFHM ydbfqOgPI3Y3ZgnZphfbXvJs/LSmPNPr5L52GP+J+favUJhprupan+BFNRFs8AHFuhfc y6+Q== X-Forwarded-Encrypted: i=1; AJvYcCXyuQSTC88xVNu9AW6glSa9xUMw2NjzGKVg+i6J72X/JCKzc4zs5obvXBASj92wmzw7MQvwv7n0hXmyIsnYXh/HLTPIQX9tibqy1S9RWpY= X-Gm-Message-State: AOJu0YwGRmYP1y4geWHEQ2YcME4MVoTljV5EqPQJ85VjTs83P7Xfs+1N 2D7Wxv25ljw+oQFAbZ2yzt7IOv3YnO/Jrb7ufyk8SgiFZevJ3ajDlo+1EwT9Jg== X-Google-Smtp-Source: AGHT+IElNfCfp7zgtvKu1pfRm5KiP/OkhURSLwY7MtEa2WtCAcwG8H68c94mAnp47MAN55LsUnDPqQ== X-Received: by 2002:a17:907:869f:b0:a6f:b11b:8ac5 with SMTP id a640c23a62f3a-a7a4c01c13cmr463689766b.30.1721653110555; Mon, 22 Jul 2024 05:58:30 -0700 (PDT) Message-ID: Date: Mon, 22 Jul 2024 14:58:29 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 5/8] xen/riscv: introduce asm/pmap.h header To: Julien Grall Cc: Alistair Francis , Bob Eshleman , Connor Davis , Andrew Cooper , Stefano Stabellini , Oleksii Kurochko , xen-devel@lists.xenproject.org References: <15375179-1c94-43c3-a256-42a856905e21@xen.org> 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: <15375179-1c94-43c3-a256-42a856905e21@xen.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 21.07.2024 10:51, Julien Grall wrote: > On 12/07/2024 17:22, Oleksii Kurochko wrote: >> +inline pte_t mfn_to_xen_entry(mfn_t mfn, unsigned int attr) >> +{ >> + /* there is no attr field in RISC-V's pte */ >> + (void) attr; > > Surely you have a way to say indicate whether an entry is readable/writable? I'm puzzled by this question. The sole outlier in Arm code is pmap.h, in passing PAGE_HYPERVISOR_RW to this function when all others pass memory types (MT_*). Afaics only the low three bits are then used in the function, discarding access control bits altogether. R/W access appears to be implied. Jan