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 F24D4ECAAD8 for ; Thu, 22 Sep 2022 22:19:30 +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-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=jgHmLEvpvWhwa7D08AVPoozYHrD6L8R9XH60y86C7vM=; b=r72iU0CM1iVdDx AR/B1oOKSOPWGrn4gdimkdgHOPT+XNVCeS5WsMEVc/XYg/XIRnRKQdrELvLeGVQRJYDCoxzLiwA3X SUurea7ia3yYH5WdOqTFOLaO0Qbl8Y9sB13jnJIwiHwKLQMuV4CuwUJhlPXvizoSwWTa55OA49Z6F /8Kg1PrKk6UIWI2kCXLJaMtJpTDrmseqlPo/yrW4ixmP6sjH5gtqPrysYF2BM+TVwTxR1m773Rrj3 Qcnk9SzJj4/eJiYrdoF4IWIpD9WKQUgt13ujiCwI7sAFyKnSAakkby4IaD95uyq5aoYfM/XZwJg95 vNwPZu3QgfitCB3JG4ng==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1obUWF-000Stn-K7; Thu, 22 Sep 2022 22:18:07 +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 1obUWD-000StR-5a for linux-arm-kernel@lists.infradead.org; Thu, 22 Sep 2022 22:18:06 +0000 Received: by mail-pl1-x62f.google.com with SMTP id x1so10107650plv.5 for ; Thu, 22 Sep 2022 15:18:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=in-reply-to:content-transfer-encoding:content-disposition :mime-version:references:message-id:subject:cc:to:from:date:from:to :cc:subject:date; bh=3tQ8DexTmBQhSl481NWshvFci5ptg/GjLyg2jvTMyy8=; b=m2zXmoY9XUMR6tDEDw/SxGMgC29NNYVTIjkuU19RN+nAKxMR0jR+SlImSib5RdnwhU IBd6KYLL/N+QCZXd0GePsiZhx8eKAG8BnzVYErauhrhmI5L3V68rn5ZqSYUzNktJ6P/M C9FMtt/Yims1ynU3WNfaGSqRCaOjqOdxaLf9I= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=in-reply-to:content-transfer-encoding:content-disposition :mime-version:references:message-id:subject:cc:to:from:date :x-gm-message-state:from:to:cc:subject:date; bh=3tQ8DexTmBQhSl481NWshvFci5ptg/GjLyg2jvTMyy8=; b=rYPAhIpWQl27ipHbNhEURXWMCFWp888KKiMnewj9MtWnCzVRUFRQVDWvu/nSrRYYA2 A6a+GOFPRrF4on3u3fUU9l1NkXCl7nKMuAYBVQVtWXrq7S9pi0k/ND4jzcAq07QYXyPt ISTIozSQcoASSjg39Hg1sqxf51bSeQEdafySiBY6iGHFbtiunt7Pw6ZIhmUanIwLssi1 3h3ndDVkXIGzRj/zFLqt636/nro4Zm1HmkAv9r5LFHf39i08EpGqIpKXKiWHBRwLh90u ilhTU5UU44eNKq+naarQLuITt9/mXsOb112B0lw6yPoc0qje5/MRpf2H0SjHlZcseVaj SV1w== X-Gm-Message-State: ACrzQf0GwLV0gCzmNdgAxyUMTkae7COpvMXkogfetboY8ps4FfRY8ePt 0+wXgGjVXemC/a9JkTxwbF2HwQ== X-Google-Smtp-Source: AMsMyM5IOGzk4mSpLeHRFJnBdY3T8XeyPe0dEzifkjTh1mWaBFGbHYS0gTk2TY8zuFIWmZJDazPXqA== X-Received: by 2002:a17:903:496:b0:176:ba09:1cc0 with SMTP id jj22-20020a170903049600b00176ba091cc0mr5292930plb.41.1663885082768; Thu, 22 Sep 2022 15:18:02 -0700 (PDT) Received: from www.outflux.net (smtp.outflux.net. [198.145.64.163]) by smtp.gmail.com with ESMTPSA id i2-20020a17090332c200b0017834a6966csm4777432plr.176.2022.09.22.15.18.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 22 Sep 2022 15:18:02 -0700 (PDT) Date: Thu, 22 Sep 2022 15:18:01 -0700 From: Kees Cook To: Will Deacon Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Sami Tolvanen , Mark Rutland , "Mohan Rao .vanimina" , Nathan Chancellor Subject: Re: [PATCH] vmlinux.lds.h: CFI: Reduce alignment of jump-table to function alignment Message-ID: <202209221514.B2B02622@keescook> References: <20220922215715.13345-1-will@kernel.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20220922215715.13345-1-will@kernel.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220922_151805_246340_141A2CE4 X-CRM114-Status: GOOD ( 13.05 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org T24gVGh1LCBTZXAgMjIsIDIwMjIgYXQgMTA6NTc6MTVQTSArMDEwMCwgV2lsbCBEZWFjb24gd3Jv dGU6Cj4gRHVlIHRvIHVuZG9jdW1lbnRlZCwgaHlzdGVyaWNhbCByYWlzaW5zIG9uIHg4NiwgdGhl IENGSSBqdW1wLXRhYmxlCj4gc2VjdGlvbnMgaW4gLnRleHQgYXJlIG5lZWRsZXNzbHkgYWxpZ25l ZCB0byBQTURfU0laRSBpbiB0aGUgdm1saW51eAo+IGxpbmtlciBzY3JpcHQuIFdoZW4gY29tcGls aW5nIGEgQ0ZJLWVuYWJsZWQgYXJtNjQga2VybmVsIHdpdGggYSA2NEtpQgo+IHBhZ2Utc2l6ZSwg YSBQTUQgbWFwcyA1MTJNaUIgb2YgdmlydHVhbCBtZW1vcnkgYW5kIHNvIHRoZSAudGV4dCBzZWN0 aW9uCj4gaW5jcmVhc2VzIHRvIGEgd2hvcHBpbmcgOTQwTWlCIGFuZCBibG93cyB0aGUgZmluYWwg SW1hZ2UgdXAgdG8gOTYwTWlCLgo+IE90aGVycyByZXBvcnQgYSBsaW5rIGZhaWx1cmUuCgpIZWgu ICJUaGF0J3Mgbm90IGFuIGltYWdlIC4uLiBUSElTIGlzIGFuIGltYWdlLiJbMV0KCj4gU2luY2Ug dGhlIENGSSBqdW1wLXRhYmxlIHJlcXVpcmVzIG9ubHkgaW5zdHJ1Y3Rpb24gYWxpZ25tZW50LCBy ZWR1Y2UgdGhlCj4gYWxpZ25tZW50IGRpcmVjdGl2ZXMgdG8gZnVuY3Rpb24gYWxpZ25tZW50IGZv ciBwYXJpdHkgd2l0aCBvdGhlciBwYXJ0cwo+IG9mIHRoZSAudGV4dCBzZWN0aW9uLiBUaGlzIHJl ZHVjZXMgdGhlIHNpemUgb2YgdGhlIC50ZXh0IHNlY3Rpb24gZm9yIHRoZQo+IGFmb3JlbWVudGlv bmVkIDY0S2lCIHBhZ2Ugc2l6ZSBhcm02NCBrZXJuZWwgdG8gMTlNaUIgZm9yIGEgbXVjaCBtb3Jl Cj4gcmVhc29uYWJsZSB0b3RhbCBJbWFnZSBzaXplIG9mIDM5TWlCLgoK4p2k77iPCgpSZXZpZXdl ZC1ieTogS2VlcyBDb29rIDxrZWVzY29va0BjaHJvbWl1bS5vcmc+CgotS2VlcwoKWzFdIGh0dHBz Oi8vd3d3LnlvdXR1YmUuY29tL3dhdGNoP3Y9cm5lOHBPeEd1d00jdD0yNwoKLS0gCktlZXMgQ29v awoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KbGludXgt YXJtLWtlcm5lbCBtYWlsaW5nIGxpc3QKbGludXgtYXJtLWtlcm5lbEBsaXN0cy5pbmZyYWRlYWQu b3JnCmh0dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8vbGludXgtYXJt LWtlcm5lbAo=