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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 E35AFC46467 for ; Wed, 11 Jan 2023 04:28:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Content-Type: Content-Transfer-Encoding:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:From:References:Cc:To:Subject: MIME-Version:Date:Message-ID:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=6txyOroEEQn+hoF68VfWQD3W74HxKkUsCYX/pZzYqoc=; b=upx7BeJ6+MAOor vW1p0ohZWSp+pJsUbPjVxUrZRiBE7mlhbQUXAjG+Ne6GDxy5u6MYtiYvral6SLyX22a5vPyxpow8y b0MlmAe6r4Ox/C+co2kUfYy3V+t9tZvq1m417Hbq1wguuNqN0Y/oahv6hUxn4PA3/QcSJq4t6Mcjg 8BFV2hReKdVV/Ab+ZEeSfV4JHWraiuvqfg4mtVFffZ+zgSeNVQrDs3laAOSpB6HpVrzXoEGuZxRmf R8nzl2CdYJnPb9w4HMb9J+TtjOYDZkrrE6or5JtFBfAG8bmt4D0rIPjZ5kGsd8BjUxqJYWceJfHZ1 gvoNdD0r7022CdoLY8Xg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pFSiw-009Xoa-4N; Wed, 11 Jan 2023 04:28:26 +0000 Received: from mail-pl1-x62f.google.com ([2607:f8b0:4864:20::62f]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1pFSis-009Xnu-I8 for linux-riscv@lists.infradead.org; Wed, 11 Jan 2023 04:28:24 +0000 Received: by mail-pl1-x62f.google.com with SMTP id s8so7196494plk.5 for ; Tue, 10 Jan 2023 20:28:19 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ventanamicro.com; s=google; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=GXZjC/DmwQdIIlQ4/Z/0cbskvNfG/Ewj+78a1mwo7zE=; b=XxgAKHKEBxa3Ku8ewYBVzexUdjK+YpBXdQ9ViBLjXTIvhtQ0R9xNqAQOWYXmoTHoFz J5hCePf+G2g1Mrfc0nvIeYEOZ9ELB0OuzpICfuMWQcCUV/NnHS/jAldeKvnJZ1WYF5AW buEGJyUzNElyL99k3p9CbWFHmW7vKEKjWySoZAXXFCa/nHiGsoAxVXFk7xUHpkxkO5JK gYr8snxcM9tEzzu27zP86/nLXkXYb6+jhVWxUPJabCX8t4t+mLDcrmRjP805w6Ip40k8 puf2kEbWpw/poBuGYinDZSKr7hfFOLfG7PLKjLKZpqjHRhOMLRf1rWHUktbbfX9h4j98 evNA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=GXZjC/DmwQdIIlQ4/Z/0cbskvNfG/Ewj+78a1mwo7zE=; b=JZlnxBdXonXXK8pq8g4XDxBD+2TrZw8RE5sFMY6CMMtapxoodRutnKgM2f+ksOb1d2 GEBVb9umoD0IXz1fO7+VCYh/WCEXZlQb5U7wT4/5O5qCjz9bArQjIVrT158Yy3cezQ9w scmmbn6VMWBOCmnM4AV0s7hXTeur95p1REb1dhdpObQSCYHnz31hTuwRq9bM3LI5uQB0 MJeRSlJnuiAbRw4sJlktQrShpdURAYk80qWerUC52D37sVmbp/GBGnj3BkMWKwMbH97K weUNVsy7lF4ckDxE3Ddj3yrFGw7hxUXJRrqvIOO+nVpJXLJWv85D95etZGMHsrNLUa0d Lxng== X-Gm-Message-State: AFqh2kpWPEgUsxwbdT9ep13xri9buQ9TSJcVQSXmkl9i6R5WI4h8CeMk sDBv4eBmtGSRKy1bv9cAQrqbLQ== X-Google-Smtp-Source: AMrXdXvz//WNvmPcOjdnGix3EEbJUHoqRB5mxb0l9S+zAJsoPE02JWs6w26vSqZ3+p5fNA8wUq9bAQ== X-Received: by 2002:a17:90a:6281:b0:219:b1f3:2401 with SMTP id d1-20020a17090a628100b00219b1f32401mr71627006pjj.13.1673411298802; Tue, 10 Jan 2023 20:28:18 -0800 (PST) Received: from ?IPV6:2601:681:8600:13d0::f0a? ([2601:681:8600:13d0::f0a]) by smtp.gmail.com with ESMTPSA id c7-20020a17090a1d0700b00228da96cfdbsm1054142pjd.20.2023.01.10.20.28.16 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 10 Jan 2023 20:28:18 -0800 (PST) Message-ID: <119da65f-e976-f382-3fe1-1585be738352@ventanamicro.com> Date: Tue, 10 Jan 2023 21:28:16 -0700 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.5.1 Subject: Re: Auto-enabling V unit and/or use of elf attributes (was Re: Adding V-ext regs to signal context w/o expanding kernel struct sigcontext to avoid glibc ABI break) Content-Language: en-US To: Richard Henderson , Vineet Gupta , Kito Cheng Cc: Philipp Tomsich , Andy Chiu , Vincent Chen , Florian Weimer , Rich Felker , Andrew Waterman , Palmer Dabbelt , =?UTF-8?Q?Christoph_M=c3=bcllner?= , davidlt@rivosinc.com, Arnd Bergmann , =?UTF-8?B?QmrDtnJuIFTDtnBlbA==?= , Szabolcs Nagy , Greentime Hu , Aaron Durbin , Andrew de los Reyes , linux-riscv , GNU C Library References: <1631497278-29829-1-git-send-email-vincent.chen@sifive.com> <7430f494-9b43-5e03-c1e9-6b83e2611a11@rivosinc.com> <91ef3c45-165f-d2b3-7c77-322c01802c41@rivosinc.com> <18465ca3-934f-5b3e-170c-1ff0edea3a89@rivosinc.com> <1f8f1d21-4a19-54fe-8b29-bf9e2a8501d7@rivosinc.com> <3a838afe-974b-60bb-a0e5-83e366ec652e@rivosinc.com> <3923eeee-e4dc-0911-40bf-84c34aee962d@linaro.org> From: Jeff Law In-Reply-To: <3923eeee-e4dc-0911-40bf-84c34aee962d@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230110_202822_644930_37E66863 X-CRM114-Status: GOOD ( 11.58 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org CgpPbiAxLzEwLzIzIDE4OjIyLCBSaWNoYXJkIEhlbmRlcnNvbiB3cm90ZToKPiBPbiAxLzEwLzIz IDEwOjA3LCBWaW5lZXQgR3VwdGEgd3JvdGU6Cj4+IFllcyBidWxrIG9mIGdsaWJjIG1pZ2h0IG5v dCBoYXZlIHZlY3RvciBjb2RlLCBidXQgdGhvc2UgViBpZnVuYyAKPj4gcm91dGluZXMgZG8gYW5k IElNTyB0aGlzIGluZm9ybWF0aW9uIG5lZWRzIHRvIGJlIHJlY29yZGVkIHNvbWV3aGVyZSBpbiAK Pj4gdGhlIGVsZi4gQ2FzZSBpbiBwb2ludCBiZWluZyB0aGUgY3VycmVudCBpc3N1ZSB3aXRoIGhv dyB0byBlbmFibGUgViAKPj4gdW5pdC4gQ29tbXVuaXR5IHdhbnRzIGEgcGVyLXByb2Nlc3MgZW5h YmxlLCB1c2luZyBhbiBleHBsaWNpdCBwcmN0bCAKPj4gZnJvbSB1c2Vyc3BhY2UgKHNpbmNlIFJW IGRvZXNuJ3QgaGF2ZSBmYXVsdC1vbi1maXJzdCB1c2UgaGFyZHdhcmUgCj4+IG1lY2hhbmlzbSB1 bmxpa2Ugc29tZSBvZiB0aGUgb3RoZXIgYXJjaGVzKS4gQnV0IGhvdyBkb2VzIHRoZSBnbGliYyAK Pj4gbG9hZGVyIGtub3cgdG8gaW52b2tlIHByY3RsLiBXZSBjYW4ndCBqdXN0IHJlbHkgb24gdXNl ciBlbnYgCj4+IEdMSUJDX1RVTkFCTEUgZXRjIHNpbmNlIHRoYXQgbWlnaHQgbm90IGJlIGFjY3Vy YXRlLiBJdCBuZWVkcyBzb21ldGhpZ24gCj4+IGNvbmNyZXRlIHdoaWNoIElNTyBjYW4gY29tZSBm cm9tIGVsZiBhdHRyaWJ1dGVzLiBJZiBub3QsIGRvIHlvdSBoYXZlIAo+PiBzdWdnZXN0aW9ucyBv biBob3cgdG8gc29sdmUgdGhpcyBpc3N1ZSA/Cj4gCj4gV2h5IG5vdCBqdXN0IGZhdWx0IG9uIGZp cnN0IHVzZSB0byBlbmFibGU/wqAgVGhhdCdzIHZhc3RseSBsZXNzIAo+IGNvbXBsaWNhdGVkIHRo YW4gdHJ5aW5nIHRvIHBsdW1iIGFueXRoaW5nIHRocm91Z2ggZWxmIHJlc3VsdGluZyBpbiBhIHBy Y3RsLgpXZWxsLCB0aGUgYW5zd2VyIGlzIGluIFZpbmVldCdzIHBhcmFncmFwaCAtLSB0aGUgaGFy ZHdhcmUgYXBwYXJlbnRseSAKZG9lc24ndCBoYXZlIGZhdWx0LW9uLWZpcnN0LXVzZSB3aGljaCBp cyBtaWdodHkgdW5mb3J0dW5hdGUuCgpKZWZmCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fXwpsaW51eC1yaXNjdiBtYWlsaW5nIGxpc3QKbGludXgtcmlzY3ZA bGlzdHMuaW5mcmFkZWFkLm9yZwpodHRwOi8vbGlzdHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xp c3RpbmZvL2xpbnV4LXJpc2N2Cg==