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 AD114C98332 for ; Sat, 26 Sep 2026 12:30:11 +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=OHqtaDWDtrrCe69a++QGiyWYw3CYZvZiu9Spa+fpIo8=; b=FUUdil5HBEx2Qd 9gYKDMeMsgNwpWwBSNf7qxJvLN14ekTFPMk3uS4jSiq9+Uz1JGL7ANVNt5C46Yl2pluoanyHxz1DW o+kZDT0lysSc6sk8O6F8W+nER2ZafIeF+ROPSRHttD2B3vaDfsO4FJ1zfqCJTA/KKihSuS+1/19pv 4cGJ5i2ELuVhzGvBIoih2Zw7iGfXGSDoUMFHZVl4OuQwFop3YbDqeWSP7jyzmM2Kk5tBSLGjXCAJp V0st41RwknTI6kol9QMPXn9kXzlUu/C76uoJfRRN1LaUsa4+bRaWdRyk/+F4IJhiqY0KK589zRHrP RbYzhLS8kXDxQtaBqpDA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1xARXS-0000000FNLv-2AZZ; Sat, 26 Sep 2026 12:29:58 +0000 Received: from tor.source.kernel.org ([172.105.4.254]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1xARXR-0000000FNLi-0Iob; Sat, 26 Sep 2026 12:29:57 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id 7ABD86020C; Sat, 26 Sep 2026 12:29:55 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id CACEC1F000FF; Sat, 26 Sep 2026 12:29:51 +0000 (UTC) Authentication-Results: smtp.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=zx2c4.com header.i=@zx2c4.com header.a=rsa-sha256 header.s=20210105 header.b=fWy2eGCz DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=zx2c4.com; s=20210105; t=1790425789; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=7EWe+cOVuiuALG3fSMmOBzRzFlCFzXc33JkXkx1uiBY=; b=fWy2eGCzqw97MDTi86p7ZoeuZeb3HX+VHXYOxXN775vTmaBLVIqcpfDIhC1t7V0ymOaWu+ 3IB1uP08XisvikuIAPREDKOH2kCgWvF+Vk6g8+Glix60G4mW1/6BTrIDHBmIKlwdI65pbW cYGtmKbAqqECIBmZz5siKYrn8qHZG8U= Received: by mail.zx2c4.com (OpenSMTPD) with ESMTPSA id 1c1acda8 (TLSv1.3:TLS_AES_256_GCM_SHA384:256:NO); Sat, 26 Sep 2026 12:29:48 +0000 (UTC) Date: Sat, 26 Sep 2026 14:29:39 +0200 From: "Jason A. Donenfeld" To: "Christophe Leroy (CS GROUP)" Cc: Nick Desaulniers , Nathan Chancellor , Andy Lutomirski , Thomas Gleixner , Theodore Ts'o , Vincenzo Frascino , Bill Wendling , Justin Stitt , Catalin Marinas , Will Deacon , Mark Rutland , Huacai Chen , WANG Xuerui , Madhavan Srinivasan , Michael Ellerman , Nicholas Piggin , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle , Ingo Molnar , Borislav Petkov , Dave Hansen , "H. Peter Anvin" , x86@kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, loongarch@lists.linux.dev, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, llvm@lists.linux.dev Subject: Re: [PATCH v2] random: vDSO: Avoid call to memset() when zeroing reserved in __cvdso_getrandom_data() Message-ID: References: <20260925-vdso-getrandom-avoid-memset-llvm-24-v2-1-ce640f872393@kernel.org> <9d1c338b-368f-4ea2-a12e-c28d49adff5e@kernel.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <9d1c338b-368f-4ea2-a12e-c28d49adff5e@kernel.org> 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-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org T24gU2F0LCBTZXAgMjYsIDIwMjYgYXQgMTI6NTU6MzRQTSArMDIwMCwgQ2hyaXN0b3BoZSBMZXJv eSAoQ1MgR1JPVVApIHdyb3RlOgo+IEhpIEphc29uLAo+IAo+IExlIDI2LzA5LzIwMjYgw6AgMTI6 MDIsIEphc29uIEEuIERvbmVuZmVsZCBhIMOpY3JpdMKgOgo+ID4gT24gRnJpLCBTZXAgMjUsIDIw MjYgYXQgMDM6MDA6NDZQTSAtMDcwMCwgTmljayBEZXNhdWxuaWVycyB3cm90ZToKPiA+PiBPbiBG cmksIFNlcCAyNSwgMjAyNiBhdCAyOjU24oCvUE0gTmljayBEZXNhdWxuaWVycwo+ID4+IDxuZGVz YXVsbmllcnNAZ29vZ2xlLmNvbT4gd3JvdGU6Cj4gPj4+Cj4gPj4+IE9uIEZyaSwgU2VwIDI1LCAy MDI2IGF0IDI6NTPigK9QTSBOaWNrIERlc2F1bG5pZXJzCj4gPj4+IDxuZGVzYXVsbmllcnNAZ29v Z2xlLmNvbT4gd3JvdGU6Cj4gPj4+Pgo+ID4+Pj4gT24gRnJpLCBTZXAgMjUsIDIwMjYgYXQgMjo0 NuKAr1BNIE5hdGhhbiBDaGFuY2VsbG9yIDxuYXRoYW5Aa2VybmVsLm9yZz4gd3JvdGU6Cj4gPj4+ Pj4KPiA+Pj4+PiBBZnRlciBhIHJlY2VudCBjaGFuZ2UgaW4gTExWTSBbMV0sIGJ1aWxkcyB3aXRo IHRoZSByYW5kb20gdkRTTwo+ID4+Pj4+IGltcGxlbWVudGF0aW9uLCBzdWNoIGFzIFBvd2VyUEMg YW5kIFJJU0MtViwgZmFpbCB3aGVuIGNoZWNraW5nIHRoZSB2RFNPOgo+ID4+Pj4+Cj4gPj4+Pj4g ICAgYXJjaC9wb3dlcnBjL2tlcm5lbC92ZHNvL3Zkc28zMi5zby5kYmc6IGR5bmFtaWMgcmVsb2Nh dGlvbnMgYXJlIG5vdCBzdXBwb3J0ZWQKPiA+Pj4+PiAgICBhcmNoL3Jpc2N2L2tlcm5lbC92ZHNv L3Zkc28uc28uZGJnOiBkeW5hbWljIHJlbG9jYXRpb25zIGFyZSBub3Qgc3VwcG9ydGVkCj4gPj4+ Pj4KPiA+Pj4+PiBtZW1zZXQoKSBpcyBub3cgZ2VuZXJhdGVkIHdoZW4gemVyb2luZyBwYXJhbXMt PnJlc2VydmVkIGZvciBzb21lIGJ1aWxkcwo+ID4+Pj4+IGJlY2F1c2UgTExWTSBoYXMgYW4gb3B0 aW1pemF0aW9uIChub3cgcnVuIGluIG1vcmUgaW5zdGFuY2VzKSB0aGF0IGNhbgo+ID4+Pj4+IHJl Y29nbml6ZSBhdCBjb21waWxlIHRpbWUgd2hlbiBpdCBpcyBhc3NpZ25pbmcgYSBzdGF0aWMgdmFs dWUgdG8gYQo+ID4+Pj4+IGNvbnRpZ3VvdXMgYXJlYSBvZiBtZW1vcnkgYW5kIHR1cm4gdGhhdCBp bnRvIGEgY2FsbCB0byBtZW1zZXQoKS4gQm90aAo+ID4+Pj4+IGNsYW5nIGFuZCBHQ0MgYXNzdW1l IG1lbXNldCgpIGlzIGFsd2F5cyBhdmFpbGFibGUgWzJdLgo+ID4+Pj4+Cj4gPj4+Pj4gY2xhbmcg cHJvdmlkZXMgYSBidWlsdGluLCBfX2J1aWx0aW5fbWVtc2V0X2lubGluZSBbM11bNF0sIHRoYXQg Y2FuIGJlCj4gPj4+Pj4gdXNlZCB0byBlbnN1cmUgYW4gZXh0ZXJuYWwgZnVuY3Rpb24gY2FsbCBp cyBub3QgZ2VuZXJhdGVkIHdoZW4gemVyb2luZwo+ID4+Pj4+IHRoaXMgbWVtb3J5LiBVc2UgaXQg d2hlbiBpdCBpcyBhdmFpbGFibGUuCj4gPj4+Pj4KPiA+Pj4+PiBXaGlsZSBHQ0MgaGFzIG5vIGlz c3VlcyB3aXRoIHRoZSBjdXJyZW50IGNvZGUsIGl0IGhhcyBnZW5lcmF0ZWQgbWVtc2V0KCkKPiA+ Pj4+PiBiZWZvcmUsIGFzIHNlZW4gaW4gY29tbWl0IGI3YmFkMDgyZTExMyAoInJhbmRvbTogdkRT TzogYXZvaWQgY2FsbCB0byBvdXQKPiA+Pj4+PiBvZiBsaW5lIG1lbXNldCgpIikuIEdDQyAxNCBw cm92aWRlcyAnLWZpbmxpbmUtc3RyaW5nb3BzPW1lbXNldCcgWzVdWzZdCj4gPj4+Pj4gd2l0aCBh IHNpbWlsYXIgZ3VhcmFudGVlIHRvIHRoZSBjbGFuZyBidWlsdGluLCBzbyB1c2UgaXQgYW5kCj4g Pj4+Pj4gX19idWlsdGluX21lbXNldCgpIHdoZW4gYXZhaWxhYmxlLgo+ID4+Pj4+Cj4gPj4+Pj4g SWYgbm8gb3B0aW9uIGlzIGF2YWlsYWJsZSwgcHJvdmlkZSBhIHNpbXBsZSBtZW1zZXRfaW5saW5l KCkgbGlrZSB0aGUgb25lCj4gPj4+Pj4gZnJvbSBsaWIvc3RyaW5nLmMgdG8gYXZvaWQgYWRkaW5n IGFuIHVnbHkgaWZkZWYuCj4gPj4+Pj4KPiA+Pj4+PiBMaW5rOiBodHRwczovL2V1cjAxLnNhZmVs aW5rcy5wcm90ZWN0aW9uLm91dGxvb2suY29tLz91cmw9aHR0cHMlM0ElMkYlMkZnaXRodWIuY29t JTJGbGx2bSUyRmxsdm0tcHJvamVjdCUyRmNvbW1pdCUyRjkwY2ViZWYxNDExNjE3ZmMzZWVkZDM1 OWJkZjAwY2I0NGIxYzI0MzkmZGF0YT0wNSU3QzAyJTdDY2hyaXN0b3BoZS5sZXJveSU0MGNzZ3Jv dXAuZXUlN0M0ZGY5NjA2M2ZmZDk0ZTYyMDRkZjA4ZGYxYmI1NGUzZCU3QzhiODdhZjdkODY0NzRk Yzc4ZGY0NWY2OWEyMDExYmI1JTdDMCU3QzAlN0M2MzkyNjAxMzc2NTk2Mjc4MDIlN0NVbmtub3du JTdDVFdGcGJHWnNiM2Q4ZXlKRmJYQjBlVTFoY0draU9uUnlkV1VzSWxZaU9pSXdMakF1TURBd01D SXNJbEFpT2lKWGFXNHpNaUlzSWtGT0lqb2lUV0ZwYkNJc0lsZFVJam95ZlElM0QlM0QlN0MwJTdD JTdDJTdDJnNkYXRhPWt1NGw4T2w1T0oycWklMkJjU2Jsc3B4eFVLT0E2ck5waVVPM1p2R1NvQWIx cyUzRCZyZXNlcnZlZD0wIFsxXQo+ID4+Pj4+IExpbms6IGh0dHBzOi8vZXVyMDEuc2FmZWxpbmtz LnByb3RlY3Rpb24ub3V0bG9vay5jb20vP3VybD1odHRwcyUzQSUyRiUyRmdjYy5nbnUub3JnJTJG b25saW5lZG9jcyUyRmdjYy0xNi4yLjAlMkZnY2MlMkZTdGFuZGFyZHMuaHRtbCUyM2luZGV4LWZm cmVlc3RhbmRpbmcmZGF0YT0wNSU3QzAyJTdDY2hyaXN0b3BoZS5sZXJveSU0MGNzZ3JvdXAuZXUl N0M0ZGY5NjA2M2ZmZDk0ZTYyMDRkZjA4ZGYxYmI1NGUzZCU3QzhiODdhZjdkODY0NzRkYzc4ZGY0 NWY2OWEyMDExYmI1JTdDMCU3QzAlN0M2MzkyNjAxMzc2NTk2NTExOTQlN0NVbmtub3duJTdDVFdG cGJHWnNiM2Q4ZXlKRmJYQjBlVTFoY0draU9uUnlkV1VzSWxZaU9pSXdMakF1TURBd01DSXNJbEFp T2lKWGFXNHpNaUlzSWtGT0lqb2lUV0ZwYkNJc0lsZFVJam95ZlElM0QlM0QlN0MwJTdDJTdDJTdD JnNkYXRhPWpRYTFlVERMazNjUE5UYTNHRUJ3VkVvaEhoNjd1a1NoYVJITVp2QSUyRkhEZyUzRCZy ZXNlcnZlZD0wIFsyXQo+ID4+Pj4+IExpbms6IGh0dHBzOi8vZXVyMDEuc2FmZWxpbmtzLnByb3Rl Y3Rpb24ub3V0bG9vay5jb20vP3VybD1odHRwcyUzQSUyRiUyRmdpdGh1Yi5jb20lMkZsbHZtJTJG bGx2bS1wcm9qZWN0JTJGY29tbWl0JTJGMzg2MzdlZTQ3NzU0MTM3MGE5MGIzN2YxNDkwNjlkOGU1 YzBjMmVmZCZkYXRhPTA1JTdDMDIlN0NjaHJpc3RvcGhlLmxlcm95JTQwY3Nncm91cC5ldSU3QzRk Zjk2MDYzZmZkOTRlNjIwNGRmMDhkZjFiYjU0ZTNkJTdDOGI4N2FmN2Q4NjQ3NGRjNzhkZjQ1ZjY5 YTIwMTFiYjUlN0MwJTdDMCU3QzYzOTI2MDEzNzY1OTY2ODU3OSU3Q1Vua25vd24lN0NUV0ZwYkda c2IzZDhleUpGYlhCMGVVMWhjR2tpT25SeWRXVXNJbFlpT2lJd0xqQXVNREF3TUNJc0lsQWlPaUpY YVc0ek1pSXNJa0ZPSWpvaVRXRnBiQ0lzSWxkVUlqb3lmUSUzRCUzRCU3QzAlN0MlN0MlN0Mmc2Rh dGE9elk3S3I5WlpOTlpSJTJGVnNud1lSbHViUFJwYk1hS2U5UXRNRDJzbmQ4WnZBJTNEJnJlc2Vy dmVkPTAgWzNdCj4gPj4+Pj4gTGluazogaHR0cHM6Ly9ldXIwMS5zYWZlbGlua3MucHJvdGVjdGlv bi5vdXRsb29rLmNvbS8/dXJsPWh0dHBzJTNBJTJGJTJGY2xhbmcubGx2bS5vcmclMkZkb2NzJTJG TGFuZ3VhZ2VFeHRlbnNpb25zLmh0bWwlMjNndWFyYW50ZWVkLWlubGluZWQtbWVtc2V0JmRhdGE9 MDUlN0MwMiU3Q2NocmlzdG9waGUubGVyb3klNDBjc2dyb3VwLmV1JTdDNGRmOTYwNjNmZmQ5NGU2 MjA0ZGYwOGRmMWJiNTRlM2QlN0M4Yjg3YWY3ZDg2NDc0ZGM3OGRmNDVmNjlhMjAxMWJiNSU3QzAl N0MwJTdDNjM5MjYwMTM3NjU5Njc4MzYwJTdDVW5rbm93biU3Q1RXRnBiR1pzYjNkOGV5SkZiWEIw ZVUxaGNHa2lPblJ5ZFdVc0lsWWlPaUl3TGpBdU1EQXdNQ0lzSWxBaU9pSlhhVzR6TWlJc0lrRk9J am9pVFdGcGJDSXNJbGRVSWpveWZRJTNEJTNEJTdDMCU3QyU3QyU3QyZzZGF0YT12VVUyZmhDVmNV V3NiUUQzSXNSYVV6U084S1ZTcHh3U3BncjlTYW40YXEwJTNEJnJlc2VydmVkPTAgWzRdCj4gPj4+ Pj4gTGluazogaHR0cHM6Ly9ldXIwMS5zYWZlbGlua3MucHJvdGVjdGlvbi5vdXRsb29rLmNvbS8/ dXJsPWh0dHBzJTNBJTJGJTJGZ2NjLmdudS5vcmclMkZnaXQlMkYlM0ZwJTNEZ2NjLmdpdCUzQmEl M0Rjb21taXQlM0JoJTNEMWZmNmQ5Zjc0MjhiMDY2OGNkOGFiMGIzZTNhYjk0ZjFkNzMzMTI0ZCZk YXRhPTA1JTdDMDIlN0NjaHJpc3RvcGhlLmxlcm95JTQwY3Nncm91cC5ldSU3QzRkZjk2MDYzZmZk OTRlNjIwNGRmMDhkZjFiYjU0ZTNkJTdDOGI4N2FmN2Q4NjQ3NGRjNzhkZjQ1ZjY5YTIwMTFiYjUl N0MwJTdDMCU3QzYzOTI2MDEzNzY1OTY4NzgxNSU3Q1Vua25vd24lN0NUV0ZwYkdac2IzZDhleUpG YlhCMGVVMWhjR2tpT25SeWRXVXNJbFlpT2lJd0xqQXVNREF3TUNJc0lsQWlPaUpYYVc0ek1pSXNJ a0ZPSWpvaVRXRnBiQ0lzSWxkVUlqb3lmUSUzRCUzRCU3QzAlN0MlN0MlN0Mmc2RhdGE9cUhScXhB TzI1Mmltd0gxVzkzeUhscDZqZGNGR2tGT3IyWTJoWGJHMk1MVSUzRCZyZXNlcnZlZD0wIFs1XQo+ ID4+Pj4+IExpbms6IGh0dHBzOi8vZXVyMDEuc2FmZWxpbmtzLnByb3RlY3Rpb24ub3V0bG9vay5j b20vP3VybD1odHRwcyUzQSUyRiUyRmdjYy5nbnUub3JnJTJGb25saW5lZG9jcyUyRmdjYyUyRk9w dGltaXplLU9wdGlvbnMuaHRtbCUyM2luZGV4LWZpbmxpbmUtc3RyaW5nb3BzJmRhdGE9MDUlN0Mw MiU3Q2NocmlzdG9waGUubGVyb3klNDBjc2dyb3VwLmV1JTdDNGRmOTYwNjNmZmQ5NGU2MjA0ZGYw OGRmMWJiNTRlM2QlN0M4Yjg3YWY3ZDg2NDc0ZGM3OGRmNDVmNjlhMjAxMWJiNSU3QzAlN0MwJTdD NjM5MjYwMTM3NjU5Njk4Mjk4JTdDVW5rbm93biU3Q1RXRnBiR1pzYjNkOGV5SkZiWEIwZVUxaGNH a2lPblJ5ZFdVc0lsWWlPaUl3TGpBdU1EQXdNQ0lzSWxBaU9pSlhhVzR6TWlJc0lrRk9Jam9pVFdG cGJDSXNJbGRVSWpveWZRJTNEJTNEJTdDMCU3QyU3QyU3QyZzZGF0YT0wZWNjJTJCWGQ2bzNub3po M043MWFxJTJGOThYYW0lMkZkb2w3R1VIbUM2MzdJdjdJJTNEJnJlc2VydmVkPTAgWzZdCj4gPj4+ Pj4gU3VnZ2VzdGVkLWJ5OiAiSmFzb24gQS4gRG9uZW5mZWxkIiA8SmFzb25AengyYzQuY29tPgo+ ID4+Pj4+IFN1Z2dlc3RlZC1ieTogTmljayBEZXNhdWxuaWVycyA8bmRlc2F1bG5pZXJzQGdvb2ds ZS5jb20+Cj4gPj4+Pj4gU2lnbmVkLW9mZi1ieTogTmF0aGFuIENoYW5jZWxsb3IgPG5hdGhhbkBr ZXJuZWwub3JnPgo+ID4+Pj4+IC0tLQo+ID4+Pj4+IENoYW5nZXMgaW4gdjI6Cj4gPj4+Pj4gLSBT d2l0Y2ggYXBwcm9hY2ggZW50aXJlbHkgKEphc29uLCBOaWNrKQo+ID4+Pj4+ICAgIC0gY2xhbmc6 IHVzZSBfX2J1aWx0aW5fbWVtc2V0X2lubGluZSgpIHRvIGF2b2lkIGV4dGVybmFsIGNhbGwKPiA+ Pj4+PiAgICAtIEdDQyAxNCs6IHVzZSBfX2J1aWx0aW5fbWVtc2V0ICsgLWZpbmxpbmUtc3RyaW5n b3BzPW1lbXNldCAoaGVuY2UgdGhlCj4gPj4+Pj4gICAgICBtYXNzaXZlIENDIGxpc3QgaW5jcmVh c2UpCj4gPj4+Pj4gICAgLSBHQ0MgPCAxNDogbm8gaXNzdWVzIGN1cnJlbnRseSBidXQgYXZvaWQg aWZkZWYgd2l0aCBzaW1wbGUgbWVtc2V0Cj4gPj4+Pj4gICAgICBpbXBsZW1lbnRhdGlvbgo+ID4+ Pj4+IC0gTGluayB0byB2MTogaHR0cHM6Ly9ldXIwMS5zYWZlbGlua3MucHJvdGVjdGlvbi5vdXRs b29rLmNvbS8/dXJsPWh0dHBzJTNBJTJGJTJGcGF0Y2gubXNnaWQubGluayUyRjIwMjYwOTE2LXZk c28tZ2V0cmFuZG9tLWF2b2lkLW1lbXNldC1sbHZtLTI0LXYxLTEtODBhOTJmMmUyMjVhJTQwa2Vy bmVsLm9yZyZkYXRhPTA1JTdDMDIlN0NjaHJpc3RvcGhlLmxlcm95JTQwY3Nncm91cC5ldSU3QzRk Zjk2MDYzZmZkOTRlNjIwNGRmMDhkZjFiYjU0ZTNkJTdDOGI4N2FmN2Q4NjQ3NGRjNzhkZjQ1ZjY5 YTIwMTFiYjUlN0MwJTdDMCU3QzYzOTI2MDEzNzY1OTcxMjk4MyU3Q1Vua25vd24lN0NUV0ZwYkda c2IzZDhleUpGYlhCMGVVMWhjR2tpT25SeWRXVXNJbFlpT2lJd0xqQXVNREF3TUNJc0lsQWlPaUpY YVc0ek1pSXNJa0ZPSWpvaVRXRnBiQ0lzSWxkVUlqb3lmUSUzRCUzRCU3QzAlN0MlN0MlN0Mmc2Rh dGE9JTJGdHEzdFVIcURtYlhlc3FCNjl3NnVtWEF1YVRzZnpPSWhrNTRKeTc2Y3dvJTNEJnJlc2Vy dmVkPTAKPiA+Pj4+PiAtLS0KPiA+Pj4+PiAgIGFyY2gvYXJtNjQva2VybmVsL3Zkc28vTWFrZWZp bGUgICAgIHwgIDIgKy0KPiA+Pj4+PiAgIGFyY2gvbG9vbmdhcmNoL3Zkc28vTWFrZWZpbGUgICAg ICAgIHwgIDEgKwo+ID4+Pj4+ICAgYXJjaC9wb3dlcnBjL2tlcm5lbC92ZHNvL01ha2VmaWxlICAg fCAgMSArCj4gPj4+Pj4gICBhcmNoL3Jpc2N2L2tlcm5lbC92ZHNvL01ha2VmaWxlICAgICB8ICAx ICsKPiA+Pj4+PiAgIGFyY2gvczM5MC9rZXJuZWwvdmRzby9NYWtlZmlsZSAgICAgIHwgIDEgKwo+ ID4+Pj4+ICAgYXJjaC94ODYvZW50cnkvdmRzby92ZHNvNjQvTWFrZWZpbGUgfCAgMiArLQo+ID4+ Pj4+ICAgaW5pdC9LY29uZmlnICAgICAgICAgICAgICAgICAgICAgICAgfCAgNyArKysrKysrCj4g Pj4+Pj4gICBsaWIvdmRzby9nZXRyYW5kb20uYyAgICAgICAgICAgICAgICB8IDE5ICsrKysrKysr KysrKysrKysrLS0KPiA+Pj4+PiAgIDggZmlsZXMgY2hhbmdlZCwgMzAgaW5zZXJ0aW9ucygrKSwg NCBkZWxldGlvbnMoLSkKPiA+Pj4+Pgo+ID4+Pj4+IGRpZmYgLS1naXQgYS9hcmNoL2FybTY0L2tl cm5lbC92ZHNvL01ha2VmaWxlIGIvYXJjaC9hcm02NC9rZXJuZWwvdmRzby9NYWtlZmlsZQo+ID4+ Pj4+IGluZGV4IDdkZWMwNWRkMzNiNy4uZjY2MTllMWNiMmNlIDEwMDY0NAo+ID4+Pj4+IC0tLSBh L2FyY2gvYXJtNjQva2VybmVsL3Zkc28vTWFrZWZpbGUKPiA+Pj4+PiArKysgYi9hcmNoL2FybTY0 L2tlcm5lbC92ZHNvL01ha2VmaWxlCj4gPj4+Pj4gQEAgLTQxLDcgKzQxLDcgQEAgQ0NfRkxBR1Nf UkVNT1ZFX1ZEU08gOj0gJChDQ19GTEFHU19GVFJBQ0UpIC1PcyAkKENDX0ZMQUdTX1NDUykgXAo+ ID4+Pj4+ICAgICAgICAgICAgICAgICAgICAgICAgICAkKENDX0ZMQUdTX0xUTykgJChDQ19GTEFH U19DRkkpIFwKPiA+Pj4+PiAgICAgICAgICAgICAgICAgICAgICAgICAgLVdtaXNzaW5nLXByb3Rv dHlwZXMgLVdtaXNzaW5nLWRlY2xhcmF0aW9ucwo+ID4+Pj4+Cj4gPj4+Pj4gLUNDX0ZMQUdTX0FE RF9WRFNPIDo9IC1PMiAtbWNtb2RlbD10aW55IC1mYXN5bmNocm9ub3VzLXVud2luZC10YWJsZXMK PiA+Pj4+PiArQ0NfRkxBR1NfQUREX1ZEU08gOj0gLU8yIC1tY21vZGVsPXRpbnkgLWZhc3luY2hy b25vdXMtdW53aW5kLXRhYmxlcyAkKENPTkZJR19DQ19PUFRfSU5MSU5FX01FTVNFVCkKPiA+Pj4+ Pgo+ID4+Pj4+ICAgQ0ZMQUdTX1JFTU9WRV92Z2V0dGltZW9mZGF5Lm8gPSAkKENDX0ZMQUdTX1JF TU9WRV9WRFNPKQo+ID4+Pj4+ICAgQ0ZMQUdTX1JFTU9WRV92Z2V0cmFuZG9tLm8gPSAkKENDX0ZM QUdTX1JFTU9WRV9WRFNPKQo+ID4+Pj4+IGRpZmYgLS1naXQgYS9hcmNoL2xvb25nYXJjaC92ZHNv L01ha2VmaWxlIGIvYXJjaC9sb29uZ2FyY2gvdmRzby9NYWtlZmlsZQo+ID4+Pj4+IGluZGV4IDlj OTE4MWJiNDA3MS4uMGI4NDg5MmQwODRiIDEwMDY0NAo+ID4+Pj4+IC0tLSBhL2FyY2gvbG9vbmdh cmNoL3Zkc28vTWFrZWZpbGUKPiA+Pj4+PiArKysgYi9hcmNoL2xvb25nYXJjaC92ZHNvL01ha2Vm aWxlCj4gPj4+Pj4gQEAgLTE2LDYgKzE2LDcgQEAgY2NmbGFncy12ZHNvIDo9IFwKPiA+Pj4+PiAg ICAgICAgICAkKGZpbHRlciAtbTY0LCQoS0JVSUxEX0NGTEFHUykpIFwKPiA+Pj4+PiAgICAgICAg ICAkKGZpbHRlciAtbWFyY2g9JSwkKEtCVUlMRF9DRkxBR1MpKSBcCj4gPj4+Pj4gICAgICAgICAg JChmaWx0ZXIgLW0lLWZsb2F0LCQoS0JVSUxEX0NGTEFHUykpIFwKPiA+Pj4+PiArICAgICAgICQo Q09ORklHX0NDX09QVF9JTkxJTkVfTUVNU0VUKSBcCj4gPj4+Pj4gICAgICAgICAgJChDTEFOR19G TEFHUykgXAo+ID4+Pj4+ICAgICAgICAgIC1EX19WRFNPX18KPiA+Pj4+Pgo+ID4+Pj4+IGRpZmYg LS1naXQgYS9hcmNoL3Bvd2VycGMva2VybmVsL3Zkc28vTWFrZWZpbGUgYi9hcmNoL3Bvd2VycGMv a2VybmVsL3Zkc28vTWFrZWZpbGUKPiA+Pj4+PiBpbmRleCAzNjg3NTlmODE3MDguLjBkMWE0OTUy OTg4NSAxMDA2NDQKPiA+Pj4+PiAtLS0gYS9hcmNoL3Bvd2VycGMva2VybmVsL3Zkc28vTWFrZWZp bGUKPiA+Pj4+PiArKysgYi9hcmNoL3Bvd2VycGMva2VybmVsL3Zkc28vTWFrZWZpbGUKPiA+Pj4+ PiBAQCAtNDMsNiArNDMsNyBAQCBjY2ZsYWdzLXkgOj0gLWZuby1jb21tb24gLWZuby1idWlsdGlu IC1EQlVJTERfVkRTTwo+ID4+Pj4+ICAgY2NmbGFncy15ICs9ICQoRElTQUJMRV9MQVRFTlRfRU5U Uk9QWV9QTFVHSU4pCj4gPj4+Pj4gICBjY2ZsYWdzLXkgKz0gJChjYWxsIGNjLW9wdGlvbiwgLWZu by1zdGFjay1wcm90ZWN0b3IpCj4gPj4+Pj4gICBjY2ZsYWdzLXkgKz0gLURESVNBQkxFX0JSQU5D SF9QUk9GSUxJTkcKPiA+Pj4+PiArY2NmbGFncy15ICs9ICQoQ09ORklHX0NDX09QVF9JTkxJTkVf TUVNU0VUKQo+ID4+Pj4+ICAgY2NmbGFncy15ICs9IC1mZnJlZXN0YW5kaW5nIC1mYXN5bmNocm9u b3VzLXVud2luZC10YWJsZXMKPiA+Pj4+PiAgIGNjZmxhZ3MtcmVtb3ZlLXkgOj0gJChDQ19GTEFH U19GVFJBQ0UpCj4gPj4+Pj4gICBsZGZsYWdzLXkgOj0gLVdsLC0taGFzaC1zdHlsZT1ib3RoIC1u b3N0ZGxpYiAtc2hhcmVkIC16IG5vZXhlY3N0YWNrICQoQ0xBTkdfRkxBR1MpCj4gPj4+Pj4gZGlm ZiAtLWdpdCBhL2FyY2gvcmlzY3Yva2VybmVsL3Zkc28vTWFrZWZpbGUgYi9hcmNoL3Jpc2N2L2tl cm5lbC92ZHNvL01ha2VmaWxlCj4gPj4+Pj4gaW5kZXggOGRiZjI1MzJhNTczLi5jMDIzMDQ2YTNm ZDcgMTAwNjQ0Cj4gPj4+Pj4gLS0tIGEvYXJjaC9yaXNjdi9rZXJuZWwvdmRzby9NYWtlZmlsZQo+ ID4+Pj4+ICsrKyBiL2FyY2gvcmlzY3Yva2VybmVsL3Zkc28vTWFrZWZpbGUKPiA+Pj4+PiBAQCAt MzYsNiArMzYsNyBAQCBlbmRpZgo+ID4+Pj4+ICAgY2NmbGFncy15IDo9IC1mbm8tc3RhY2stcHJv dGVjdG9yCj4gPj4+Pj4gICBjY2ZsYWdzLXkgKz0gLURESVNBQkxFX0JSQU5DSF9QUk9GSUxJTkcK PiA+Pj4+PiAgIGNjZmxhZ3MteSArPSAtZm5vLWJ1aWx0aW4KPiA+Pj4+PiArY2NmbGFncy15ICs9 ICQoQ09ORklHX0NDX09QVF9JTkxJTkVfTUVNU0VUKQo+ID4+Pj4+ICAgY2NmbGFncy15ICs9ICQo S0JVSUxEX0JBU0VfSVNBKSQoQ0ZJX01BUkNIKQo+ID4+Pj4+ICAgY2NmbGFncy15ICs9ICQoQ0ZJ X0ZVTEwpCj4gPj4+Pj4gICBhc2ZsYWdzLXkgKz0gJChLQlVJTERfQkFTRV9JU0EpJChDRklfTUFS Q0gpCj4gPj4+Pj4gZGlmZiAtLWdpdCBhL2FyY2gvczM5MC9rZXJuZWwvdmRzby9NYWtlZmlsZSBi L2FyY2gvczM5MC9rZXJuZWwvdmRzby9NYWtlZmlsZQo+ID4+Pj4+IGluZGV4IDM1YzgzNGI4OTVl Yy4uNTRiY2YyOTg0Y2ExIDEwMDY0NAo+ID4+Pj4+IC0tLSBhL2FyY2gvczM5MC9rZXJuZWwvdmRz by9NYWtlZmlsZQo+ID4+Pj4+ICsrKyBiL2FyY2gvczM5MC9rZXJuZWwvdmRzby9NYWtlZmlsZQo+ ID4+Pj4+IEBAIC0yOSw2ICsyOSw3IEBAIEtCVUlMRF9DRkxBR1NfVkRTTyA6PSAkKGZpbHRlci1v dXQgLW11bmFsaWduZWQtc3ltYm9scywkKEtCVUlMRF9DRkxBR1NfVkRTTykpCj4gPj4+Pj4gICBL QlVJTERfQ0ZMQUdTX1ZEU08gOj0gJChmaWx0ZXItb3V0IC1mbm8tYXN5bmNocm9ub3VzLXVud2lu ZC10YWJsZXMsJChLQlVJTERfQ0ZMQUdTX1ZEU08pKQo+ID4+Pj4+ICAgS0JVSUxEX0NGTEFHU19W RFNPICs9IC1mUElDIC1mbm8tY29tbW9uIC1mbm8tYnVpbHRpbiAtZmFzeW5jaHJvbm91cy11bndp bmQtdGFibGVzCj4gPj4+Pj4gICBLQlVJTERfQ0ZMQUdTX1ZEU08gKz0gLWZuby1zdGFjay1wcm90 ZWN0b3IgJChESVNBQkxFX0tTVEFDS19FUkFTRSkKPiA+Pj4+PiArS0JVSUxEX0NGTEFHU19WRFNP ICs9ICQoQ09ORklHX0NDX09QVF9JTkxJTkVfTUVNU0VUKQo+ID4+Pj4+ICAgbGRmbGFncy15IDo9 IC1zaGFyZWQgLXNvbmFtZT1saW51eC12ZHNvLnNvLjEgXAo+ID4+Pj4+ICAgICAgICAgICAgICAg LS1oYXNoLXN0eWxlPWJvdGggLS1idWlsZC1pZD1zaGExIFwKPiA+Pj4+PiAgICAgICAgICAgICAg ICQoY2FsbCBsZC1vcHRpb24sIC0tZWgtZnJhbWUtaGRyKSAtVAo+ID4+Pj4+IGRpZmYgLS1naXQg YS9hcmNoL3g4Ni9lbnRyeS92ZHNvL3Zkc282NC9NYWtlZmlsZSBiL2FyY2gveDg2L2VudHJ5L3Zk c28vdmRzbzY0L01ha2VmaWxlCj4gPj4+Pj4gaW5kZXggN2MwNzkwMDY1YjVlLi5jMjM1M2EwNjUy NzkgMTAwNjQ0Cj4gPj4+Pj4gLS0tIGEvYXJjaC94ODYvZW50cnkvdmRzby92ZHNvNjQvTWFrZWZp bGUKPiA+Pj4+PiArKysgYi9hcmNoL3g4Ni9lbnRyeS92ZHNvL3Zkc282NC9NYWtlZmlsZQo+ID4+ Pj4+IEBAIC0xNCw3ICsxNCw3IEBAIHZvYmpzLSQoQ09ORklHX1g4Nl9TR1gpICAgICAgICAgICAg ICAgICAgICAgICArPSB2c2d4Lm8KPiA+Pj4+PiAgIHZvYmpzLSQoQ09ORklHX0ZVVEVYX1JPQlVT VF9VTkxPQ0spICAgICs9IHZmdXRleC5vCj4gPj4+Pj4KPiA+Pj4+PiAgICMgQ29tcGlsYXRpb24g ZmxhZ3MKPiA+Pj4+PiAtZmxhZ3MteSAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgOj0g LURCVUlMRF9WRFNPNjQgLW02NCAtbWNtb2RlbD1zbWFsbAo+ID4+Pj4+ICtmbGFncy15ICAgICAg ICAgICAgICAgICAgICAgICAgICAgICAgICA6PSAtREJVSUxEX1ZEU082NCAtbTY0IC1tY21vZGVs PXNtYWxsICQoQ09ORklHX0NDX09QVF9JTkxJTkVfTUVNU0VUKQo+ID4+Pj4+Cj4gPj4+Pj4gICAj IFRoZSBsb2NhdGlvbiBvZiB0aGlzIGluY2x1ZGUgbWF0dGVycyEKPiA+Pj4+PiAgIGluY2x1ZGUg JChzcmMpLy4uL2NvbW1vbi9NYWtlZmlsZS5pbmNsdWRlCj4gPj4+Pj4gZGlmZiAtLWdpdCBhL2lu aXQvS2NvbmZpZyBiL2luaXQvS2NvbmZpZwo+ID4+Pj4+IGluZGV4IDg1ODNkOWYwNmM1Mi4uZmYz Zjg0NzVkZDJmIDEwMDY0NAo+ID4+Pj4+IC0tLSBhL2luaXQvS2NvbmZpZwo+ID4+Pj4+ICsrKyBi L2luaXQvS2NvbmZpZwo+ID4+Pj4+IEBAIC0xNzMsNiArMTczLDEzIEBAIGNvbmZpZyBDQ19IQVNf QUxMT0NfVE9LRU4KPiA+Pj4+PiAgIGNvbmZpZyBDQ19IQVNfTVVMVElESU1FTlNJT05BTF9OT05T VFJJTkcKPiA+Pj4+PiAgICAgICAgICBkZWZfYm9vbCAkKHN1Y2Nlc3MsZWNobyAnY2hhciB0YWdb XVs0XSBfX2F0dHJpYnV0ZV9fKChfX25vbnN0cmluZ19fKSkgPSB7IH07JyB8ICQoQ0MpICQoQ0xB TkdfRkxBR1MpIC14IGMgLSAtYyAtbyAvZGV2L251bGwgLVdlcnJvcikKPiA+Pj4+Pgo+ID4+Pj4+ ICtjb25maWcgQ0NfSEFTX09QVF9JTkxJTkVfTUVNU0VUCj4gPj4+Pj4gKyAgICAgICBkZWZfYm9v bCAkKGNjLW9wdGlvbiwtZmlubGluZS1zdHJpbmdvcHM9bWVtc2V0KQo+ID4+Pj4+ICsKPiA+Pj4+ PiArY29uZmlnIENDX09QVF9JTkxJTkVfTUVNU0VUCj4gPj4+Pj4gKyAgICAgICBzdHJpbmcKPiA+ Pj4+PiArICAgICAgIGRlZmF1bHQgIi1maW5saW5lLXN0cmluZ29wcz1tZW1zZXQiIGlmIENDX0hB U19PUFRfSU5MSU5FX01FTVNFVAo+ID4+Pj4+ICsKPiA+Pj4+PiAgIGNvbmZpZyBMRF9DQU5fVVNF X0tFRVBfSU5fT1ZFUkxBWQo+ID4+Pj4+ICAgICAgICAgICMgbGQubGxkIHByaW9yIHRvIDIxLjAu MCBkaWQgbm90IHN1cHBvcnQgS0VFUCB3aXRoaW4gYW4gb3ZlcmxheSBkZXNjcmlwdGlvbgo+ID4+ Pj4+ICAgICAgICAgICMgaHR0cHM6Ly9ldXIwMS5zYWZlbGlua3MucHJvdGVjdGlvbi5vdXRsb29r LmNvbS8/dXJsPWh0dHBzJTNBJTJGJTJGZ2l0aHViLmNvbSUyRmxsdm0lMkZsbHZtLXByb2plY3Ql MkZwdWxsJTJGMTMwNjYxJmRhdGE9MDUlN0MwMiU3Q2NocmlzdG9waGUubGVyb3klNDBjc2dyb3Vw LmV1JTdDNGRmOTYwNjNmZmQ5NGU2MjA0ZGYwOGRmMWJiNTRlM2QlN0M4Yjg3YWY3ZDg2NDc0ZGM3 OGRmNDVmNjlhMjAxMWJiNSU3QzAlN0MwJTdDNjM5MjYwMTM3NjU5NzI3MzUyJTdDVW5rbm93biU3 Q1RXRnBiR1pzYjNkOGV5SkZiWEIwZVUxaGNHa2lPblJ5ZFdVc0lsWWlPaUl3TGpBdU1EQXdNQ0lz SWxBaU9pSlhhVzR6TWlJc0lrRk9Jam9pVFdGcGJDSXNJbGRVSWpveWZRJTNEJTNEJTdDMCU3QyU3 QyU3QyZzZGF0YT0wM2VBUXZQVERzJTJGTjI4YllpaVpBVlljeDJKRlNrdU9NN3gyaXdGVSUyRiUy RnhBJTNEJnJlc2VydmVkPTAKPiA+Pj4+PiBkaWZmIC0tZ2l0IGEvbGliL3Zkc28vZ2V0cmFuZG9t LmMgYi9saWIvdmRzby9nZXRyYW5kb20uYwo+ID4+Pj4+IGluZGV4IDI4NTFhZmE5MTU0Zi4uZjVj YWQ1NjQxOTg1IDEwMDY0NAo+ID4+Pj4+IC0tLSBhL2xpYi92ZHNvL2dldHJhbmRvbS5jCj4gPj4+ Pj4gKysrIGIvbGliL3Zkc28vZ2V0cmFuZG9tLmMKPiA+Pj4+PiBAQCAtMjksNiArMjksMjIgQEAK PiA+Pj4+PiAgICAgICAgICB9ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAg ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICBcCj4gPj4+Pj4gICB9IHdoaWxlICgwKQo+ ID4+Pj4+Cj4gPj4+Pj4gKyNpZiBfX2hhc19idWlsdGluKF9fYnVpbHRpbl9tZW1zZXRfaW5saW5l KQo+ID4+Pj4+ICsjZGVmaW5lIG1lbXNldF9pbmxpbmUoZHN0LCB2YWx1ZSwgc2l6ZSkgX19idWls dGluX21lbXNldF9pbmxpbmUoZHN0LCB2YWx1ZSwgc2l6ZSkKPiA+Pj4+PiArI2VsaWYgSVNfRU5B QkxFRChDT05GSUdfQ0NfSEFTX09QVF9JTkxJTkVfTUVNU0VUKQo+ID4+Pj4+ICsjZGVmaW5lIG1l bXNldF9pbmxpbmUoZHN0LCB2YWx1ZSwgc2l6ZSkgX19idWlsdGluX21lbXNldChkc3QsIHZhbHVl LCBzaXplKQo+ID4+Pj4+ICsjZWxzZQo+ID4+Pj4+ICtzdGF0aWMgaW5saW5lIHZvaWQgKm1lbXNl dF9pbmxpbmUodm9pZCAqZHN0LCBpbnQgdmFsdWUsIHNpemVfdCBzaXplKQo+ID4+Pj4+ICt7Cj4g Pj4+Pj4gKyAgICAgICBjaGFyICpkID0gZHN0Owo+ID4+Pj4+ICsKPiA+Pj4+PiArICAgICAgIHdo aWxlIChzaXplLS0pCj4gPj4+Pj4gKyAgICAgICAgICAgICAgICpkKysgPSB2YWx1ZTsKPiA+Pj4+ PiArCj4gPj4+Pj4gKyAgICAgICByZXR1cm4gZDsKPiA+Pj4+PiArfQo+ID4+Pj4+ICsjZW5kaWYK PiA+Pj4+Cj4gPj4+PiBEb2VzIHRoaXMgd29yaz8KPiA+Pj4+IGh0dHBzOi8vZXVyMDEuc2FmZWxp bmtzLnByb3RlY3Rpb24ub3V0bG9vay5jb20vP3VybD1odHRwcyUzQSUyRiUyRmdvZGJvbHQub3Jn JTJGeiUyRlR4NkVhR01mYiZkYXRhPTA1JTdDMDIlN0NjaHJpc3RvcGhlLmxlcm95JTQwY3Nncm91 cC5ldSU3QzRkZjk2MDYzZmZkOTRlNjIwNGRmMDhkZjFiYjU0ZTNkJTdDOGI4N2FmN2Q4NjQ3NGRj NzhkZjQ1ZjY5YTIwMTFiYjUlN0MwJTdDMCU3QzYzOTI2MDEzNzY1OTc0MTE2MCU3Q1Vua25vd24l N0NUV0ZwYkdac2IzZDhleUpGYlhCMGVVMWhjR2tpT25SeWRXVXNJbFlpT2lJd0xqQXVNREF3TUNJ c0lsQWlPaUpYYVc0ek1pSXNJa0ZPSWpvaVRXRnBiQ0lzSWxkVUlqb3lmUSUzRCUzRCU3QzAlN0Ml N0MlN0Mmc2RhdGE9WHYwcmxlODVKczVCSDJxTlVMNHEySXYyWndnSmhKNEZhVHVIWUF2dkVWbyUz RCZyZXNlcnZlZD0wCj4gPj4+Cj4gPj4+IEhtbW0uLi5wb3NzaWJseS4KPiA+Pj4gaHR0cHM6Ly9l dXIwMS5zYWZlbGlua3MucHJvdGVjdGlvbi5vdXRsb29rLmNvbS8/dXJsPWh0dHBzJTNBJTJGJTJG Z29kYm9sdC5vcmclMkZ6JTJGZWM5cnpkOVlmJmRhdGE9MDUlN0MwMiU3Q2NocmlzdG9waGUubGVy b3klNDBjc2dyb3VwLmV1JTdDNGRmOTYwNjNmZmQ5NGU2MjA0ZGYwOGRmMWJiNTRlM2QlN0M4Yjg3 YWY3ZDg2NDc0ZGM3OGRmNDVmNjlhMjAxMWJiNSU3QzAlN0MwJTdDNjM5MjYwMTM3NjU5NzU0MDIy JTdDVW5rbm93biU3Q1RXRnBiR1pzYjNkOGV5SkZiWEIwZVUxaGNHa2lPblJ5ZFdVc0lsWWlPaUl3 TGpBdU1EQXdNQ0lzSWxBaU9pSlhhVzR6TWlJc0lrRk9Jam9pVFdGcGJDSXNJbGRVSWpveWZRJTNE JTNEJTdDMCU3QyU3QyU3QyZzZGF0YT1iTGFqWTZjM0NiWU9aTUpsQkE0YllsVkUzYk5WYyUyRnhl MUtZazByVUpnak0lM0QmcmVzZXJ2ZWQ9MAo+ID4+PiBJIGRvbid0IGdldCBpdC4uLgo+ID4+Cj4g Pj4gSnVzdCBrZWVwIGl0IHVuZGVyIDIgcGFnZXMsIGl0IHdpbGwgYmUgZmluZToKPiA+PiBodHRw czovL2V1cjAxLnNhZmVsaW5rcy5wcm90ZWN0aW9uLm91dGxvb2suY29tLz91cmw9aHR0cHMlM0El MkYlMkZnb2Rib2x0Lm9yZyUyRnolMkZxcW9NcWZ4ZXYmZGF0YT0wNSU3QzAyJTdDY2hyaXN0b3Bo ZS5sZXJveSU0MGNzZ3JvdXAuZXUlN0M0ZGY5NjA2M2ZmZDk0ZTYyMDRkZjA4ZGYxYmI1NGUzZCU3 QzhiODdhZjdkODY0NzRkYzc4ZGY0NWY2OWEyMDExYmI1JTdDMCU3QzAlN0M2MzkyNjAxMzc2NTk3 NjM4MDQlN0NVbmtub3duJTdDVFdGcGJHWnNiM2Q4ZXlKRmJYQjBlVTFoY0draU9uUnlkV1VzSWxZ aU9pSXdMakF1TURBd01DSXNJbEFpT2lKWGFXNHpNaUlzSWtGT0lqb2lUV0ZwYkNJc0lsZFVJam95 ZlElM0QlM0QlN0MwJTdDJTdDJTdDJnNkYXRhPUJjcDElMkIlMkZpcjA1dHNQd2YwOE9Ra0p4NHZE a1BsaWFTcHBhbTFlJTJCVFBwcmslM0QmcmVzZXJ2ZWQ9MAo+ID4gCj4gPiBodHRwczovL2V1cjAx LnNhZmVsaW5rcy5wcm90ZWN0aW9uLm91dGxvb2suY29tLz91cmw9aHR0cHMlM0ElMkYlMkZnb2Ri b2x0Lm9yZyUyRnolMkY5VzlmNWE3V3gmZGF0YT0wNSU3QzAyJTdDY2hyaXN0b3BoZS5sZXJveSU0 MGNzZ3JvdXAuZXUlN0M0ZGY5NjA2M2ZmZDk0ZTYyMDRkZjA4ZGYxYmI1NGUzZCU3QzhiODdhZjdk ODY0NzRkYzc4ZGY0NWY2OWEyMDExYmI1JTdDMCU3QzAlN0M2MzkyNjAxMzc2NTk3NzMxNjklN0NV bmtub3duJTdDVFdGcGJHWnNiM2Q4ZXlKRmJYQjBlVTFoY0draU9uUnlkV1VzSWxZaU9pSXdMakF1 TURBd01DSXNJbEFpT2lKWGFXNHpNaUlzSWtGT0lqb2lUV0ZwYkNJc0lsZFVJam95ZlElM0QlM0Ql N0MwJTdDJTdDJTdDJnNkYXRhPVlQR1lYY0tybk00ZTFRMm5IZHNoUlVhTVQzNnclMkJSa0h1SVdJ Z2NicEE5NCUzRCZyZXNlcnZlZD0wCj4gPiAKPiA+IEFwcGFyZW50bHkgbm90IG9uIFJJU0NWLCB3 aGljaCBpcyB3aGF0IHByb21wdGVkIHRoaXMgcGF0Y2ggaW4gdGhlIGZpcnN0Cj4gPiBwbGFjZS4g U28gSSBzdXNwZWN0IE5hdGhhbidzIHYyIGhlcmUgaXMgdGhlIHdheSB0byBnby4KPiAKPiAKPiBE b24ndCB5b3UgaGF2ZSAtZm5vLWJ1aWx0aW4gb24gUklTQ1YgbGlrZSB3ZSBoYXZlIG9uIHBvd2Vy cGMgPwoKSSB0aGluayBOaWNrIG1lbnRpb25lZCB0aGlzIGxlZCB0byBvdGhlciBwcm9ibGVtcyBh bmQgZGlkbid0IGV4YWN0bHkKc29sdmUgdGhlIHByb2JsZW0uCgpfX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fXwpsaW51eC1yaXNjdiBtYWlsaW5nIGxpc3QKbGlu dXgtcmlzY3ZAbGlzdHMuaW5mcmFkZWFkLm9yZwpodHRwOi8vbGlzdHMuaW5mcmFkZWFkLm9yZy9t YWlsbWFuL2xpc3RpbmZvL2xpbnV4LXJpc2N2Cg== From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B0F483438BB; Sat, 26 Sep 2026 12:29:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790425797; cv=none; b=KsMuOcyVfZSLvcXQbOurs6cSkrGF0cdQS4rqPwOGRMwo2RasJZHiYNVYvCVjXAiTUrJvaOOWsXgZLMS8JZhCBRKao/dOE3nbTXPmsOpE8b/GFm65o4h7/HNaPNkuniy/kcqR4kHtn4fOctZVfD4MZPAI3dUtLEebsUqldbCtrGc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790425797; c=relaxed/simple; bh=3BoegXZ4FhEsum2c4xlR4lV4B3w70XMS/NsW3wJGzKs=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=cWIRtNORtIWa+W9eHQXp+Zga7bpEBVE9A7y4h4tfsd6HKT4nU4aAJPxNjlk9GqqOMW/ImXvPKbU1ikd7cWrCZ7nHpm9piGgQjqcZff0Ke1gwokD9RIazQE1lRTtT+IuY3ZdROYpx8Nt7rh48D4AePn47hfCE79HZ42lacNiqTdI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=zx2c4.com header.i=@zx2c4.com header.b=fWy2eGCz; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=zx2c4.com header.i=@zx2c4.com header.b="fWy2eGCz" Received: by smtp.kernel.org (Postfix) with ESMTPSA id CACEC1F000FF; Sat, 26 Sep 2026 12:29:51 +0000 (UTC) Authentication-Results: smtp.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=zx2c4.com header.i=@zx2c4.com header.a=rsa-sha256 header.s=20210105 header.b=fWy2eGCz DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=zx2c4.com; s=20210105; t=1790425789; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=7EWe+cOVuiuALG3fSMmOBzRzFlCFzXc33JkXkx1uiBY=; b=fWy2eGCzqw97MDTi86p7ZoeuZeb3HX+VHXYOxXN775vTmaBLVIqcpfDIhC1t7V0ymOaWu+ 3IB1uP08XisvikuIAPREDKOH2kCgWvF+Vk6g8+Glix60G4mW1/6BTrIDHBmIKlwdI65pbW cYGtmKbAqqECIBmZz5siKYrn8qHZG8U= Received: by mail.zx2c4.com (OpenSMTPD) with ESMTPSA id 1c1acda8 (TLSv1.3:TLS_AES_256_GCM_SHA384:256:NO); Sat, 26 Sep 2026 12:29:48 +0000 (UTC) Date: Sat, 26 Sep 2026 14:29:39 +0200 From: "Jason A. Donenfeld" To: "Christophe Leroy (CS GROUP)" Cc: Nick Desaulniers , Nathan Chancellor , Andy Lutomirski , Thomas Gleixner , Theodore Ts'o , Vincenzo Frascino , Bill Wendling , Justin Stitt , Catalin Marinas , Will Deacon , Mark Rutland , Huacai Chen , WANG Xuerui , Madhavan Srinivasan , Michael Ellerman , Nicholas Piggin , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle , Ingo Molnar , Borislav Petkov , Dave Hansen , "H. Peter Anvin" , x86@kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, loongarch@lists.linux.dev, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, llvm@lists.linux.dev Subject: Re: [PATCH v2] random: vDSO: Avoid call to memset() when zeroing reserved in __cvdso_getrandom_data() Message-ID: References: <20260925-vdso-getrandom-avoid-memset-llvm-24-v2-1-ce640f872393@kernel.org> <9d1c338b-368f-4ea2-a12e-c28d49adff5e@kernel.org> Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <9d1c338b-368f-4ea2-a12e-c28d49adff5e@kernel.org> On Sat, Sep 26, 2026 at 12:55:34PM +0200, Christophe Leroy (CS GROUP) wrote: > Hi Jason, > > Le 26/09/2026 à 12:02, Jason A. Donenfeld a écrit : > > On Fri, Sep 25, 2026 at 03:00:46PM -0700, Nick Desaulniers wrote: > >> On Fri, Sep 25, 2026 at 2:56 PM Nick Desaulniers > >> wrote: > >>> > >>> On Fri, Sep 25, 2026 at 2:53 PM Nick Desaulniers > >>> wrote: > >>>> > >>>> On Fri, Sep 25, 2026 at 2:46 PM Nathan Chancellor wrote: > >>>>> > >>>>> After a recent change in LLVM [1], builds with the random vDSO > >>>>> implementation, such as PowerPC and RISC-V, fail when checking the vDSO: > >>>>> > >>>>> arch/powerpc/kernel/vdso/vdso32.so.dbg: dynamic relocations are not supported > >>>>> arch/riscv/kernel/vdso/vdso.so.dbg: dynamic relocations are not supported > >>>>> > >>>>> memset() is now generated when zeroing params->reserved for some builds > >>>>> because LLVM has an optimization (now run in more instances) that can > >>>>> recognize at compile time when it is assigning a static value to a > >>>>> contiguous area of memory and turn that into a call to memset(). Both > >>>>> clang and GCC assume memset() is always available [2]. > >>>>> > >>>>> clang provides a builtin, __builtin_memset_inline [3][4], that can be > >>>>> used to ensure an external function call is not generated when zeroing > >>>>> this memory. Use it when it is available. > >>>>> > >>>>> While GCC has no issues with the current code, it has generated memset() > >>>>> before, as seen in commit b7bad082e113 ("random: vDSO: avoid call to out > >>>>> of line memset()"). GCC 14 provides '-finline-stringops=memset' [5][6] > >>>>> with a similar guarantee to the clang builtin, so use it and > >>>>> __builtin_memset() when available. > >>>>> > >>>>> If no option is available, provide a simple memset_inline() like the one > >>>>> from lib/string.c to avoid adding an ugly ifdef. > >>>>> > >>>>> Link: https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fllvm%2Fllvm-project%2Fcommit%2F90cebef1411617fc3eedd359bdf00cb44b1c2439&data=05%7C02%7Cchristophe.leroy%40csgroup.eu%7C4df96063ffd94e6204df08df1bb54e3d%7C8b87af7d86474dc78df45f69a2011bb5%7C0%7C0%7C639260137659627802%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=ku4l8Ol5OJ2qi%2BcSblspxxUKOA6rNpiUO3ZvGSoAb1s%3D&reserved=0 [1] > >>>>> Link: https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgcc.gnu.org%2Fonlinedocs%2Fgcc-16.2.0%2Fgcc%2FStandards.html%23index-ffreestanding&data=05%7C02%7Cchristophe.leroy%40csgroup.eu%7C4df96063ffd94e6204df08df1bb54e3d%7C8b87af7d86474dc78df45f69a2011bb5%7C0%7C0%7C639260137659651194%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=jQa1eTDLk3cPNTa3GEBwVEohHh67ukShaRHMZvA%2FHDg%3D&reserved=0 [2] > >>>>> Link: https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fllvm%2Fllvm-project%2Fcommit%2F38637ee477541370a90b37f149069d8e5c0c2efd&data=05%7C02%7Cchristophe.leroy%40csgroup.eu%7C4df96063ffd94e6204df08df1bb54e3d%7C8b87af7d86474dc78df45f69a2011bb5%7C0%7C0%7C639260137659668579%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=zY7Kr9ZZNNZR%2FVsnwYRlubPRpbMaKe9QtMD2snd8ZvA%3D&reserved=0 [3] > >>>>> Link: https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fclang.llvm.org%2Fdocs%2FLanguageExtensions.html%23guaranteed-inlined-memset&data=05%7C02%7Cchristophe.leroy%40csgroup.eu%7C4df96063ffd94e6204df08df1bb54e3d%7C8b87af7d86474dc78df45f69a2011bb5%7C0%7C0%7C639260137659678360%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=vUU2fhCVcUWsbQD3IsRaUzSO8KVSpxwSpgr9San4aq0%3D&reserved=0 [4] > >>>>> Link: https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgcc.gnu.org%2Fgit%2F%3Fp%3Dgcc.git%3Ba%3Dcommit%3Bh%3D1ff6d9f7428b0668cd8ab0b3e3ab94f1d733124d&data=05%7C02%7Cchristophe.leroy%40csgroup.eu%7C4df96063ffd94e6204df08df1bb54e3d%7C8b87af7d86474dc78df45f69a2011bb5%7C0%7C0%7C639260137659687815%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=qHRqxAO252imwH1W93yHlp6jdcFGkFOr2Y2hXbG2MLU%3D&reserved=0 [5] > >>>>> Link: https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgcc.gnu.org%2Fonlinedocs%2Fgcc%2FOptimize-Options.html%23index-finline-stringops&data=05%7C02%7Cchristophe.leroy%40csgroup.eu%7C4df96063ffd94e6204df08df1bb54e3d%7C8b87af7d86474dc78df45f69a2011bb5%7C0%7C0%7C639260137659698298%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=0ecc%2BXd6o3nozh3N71aq%2F98Xam%2Fdol7GUHmC637Iv7I%3D&reserved=0 [6] > >>>>> Suggested-by: "Jason A. Donenfeld" > >>>>> Suggested-by: Nick Desaulniers > >>>>> Signed-off-by: Nathan Chancellor > >>>>> --- > >>>>> Changes in v2: > >>>>> - Switch approach entirely (Jason, Nick) > >>>>> - clang: use __builtin_memset_inline() to avoid external call > >>>>> - GCC 14+: use __builtin_memset + -finline-stringops=memset (hence the > >>>>> massive CC list increase) > >>>>> - GCC < 14: no issues currently but avoid ifdef with simple memset > >>>>> implementation > >>>>> - Link to v1: https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpatch.msgid.link%2F20260916-vdso-getrandom-avoid-memset-llvm-24-v1-1-80a92f2e225a%40kernel.org&data=05%7C02%7Cchristophe.leroy%40csgroup.eu%7C4df96063ffd94e6204df08df1bb54e3d%7C8b87af7d86474dc78df45f69a2011bb5%7C0%7C0%7C639260137659712983%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=%2Ftq3tUHqDmbXesqB69w6umXAuaTsfzOIhk54Jy76cwo%3D&reserved=0 > >>>>> --- > >>>>> arch/arm64/kernel/vdso/Makefile | 2 +- > >>>>> arch/loongarch/vdso/Makefile | 1 + > >>>>> arch/powerpc/kernel/vdso/Makefile | 1 + > >>>>> arch/riscv/kernel/vdso/Makefile | 1 + > >>>>> arch/s390/kernel/vdso/Makefile | 1 + > >>>>> arch/x86/entry/vdso/vdso64/Makefile | 2 +- > >>>>> init/Kconfig | 7 +++++++ > >>>>> lib/vdso/getrandom.c | 19 +++++++++++++++++-- > >>>>> 8 files changed, 30 insertions(+), 4 deletions(-) > >>>>> > >>>>> diff --git a/arch/arm64/kernel/vdso/Makefile b/arch/arm64/kernel/vdso/Makefile > >>>>> index 7dec05dd33b7..f6619e1cb2ce 100644 > >>>>> --- a/arch/arm64/kernel/vdso/Makefile > >>>>> +++ b/arch/arm64/kernel/vdso/Makefile > >>>>> @@ -41,7 +41,7 @@ CC_FLAGS_REMOVE_VDSO := $(CC_FLAGS_FTRACE) -Os $(CC_FLAGS_SCS) \ > >>>>> $(CC_FLAGS_LTO) $(CC_FLAGS_CFI) \ > >>>>> -Wmissing-prototypes -Wmissing-declarations > >>>>> > >>>>> -CC_FLAGS_ADD_VDSO := -O2 -mcmodel=tiny -fasynchronous-unwind-tables > >>>>> +CC_FLAGS_ADD_VDSO := -O2 -mcmodel=tiny -fasynchronous-unwind-tables $(CONFIG_CC_OPT_INLINE_MEMSET) > >>>>> > >>>>> CFLAGS_REMOVE_vgettimeofday.o = $(CC_FLAGS_REMOVE_VDSO) > >>>>> CFLAGS_REMOVE_vgetrandom.o = $(CC_FLAGS_REMOVE_VDSO) > >>>>> diff --git a/arch/loongarch/vdso/Makefile b/arch/loongarch/vdso/Makefile > >>>>> index 9c9181bb4071..0b84892d084b 100644 > >>>>> --- a/arch/loongarch/vdso/Makefile > >>>>> +++ b/arch/loongarch/vdso/Makefile > >>>>> @@ -16,6 +16,7 @@ ccflags-vdso := \ > >>>>> $(filter -m64,$(KBUILD_CFLAGS)) \ > >>>>> $(filter -march=%,$(KBUILD_CFLAGS)) \ > >>>>> $(filter -m%-float,$(KBUILD_CFLAGS)) \ > >>>>> + $(CONFIG_CC_OPT_INLINE_MEMSET) \ > >>>>> $(CLANG_FLAGS) \ > >>>>> -D__VDSO__ > >>>>> > >>>>> diff --git a/arch/powerpc/kernel/vdso/Makefile b/arch/powerpc/kernel/vdso/Makefile > >>>>> index 368759f81708..0d1a49529885 100644 > >>>>> --- a/arch/powerpc/kernel/vdso/Makefile > >>>>> +++ b/arch/powerpc/kernel/vdso/Makefile > >>>>> @@ -43,6 +43,7 @@ ccflags-y := -fno-common -fno-builtin -DBUILD_VDSO > >>>>> ccflags-y += $(DISABLE_LATENT_ENTROPY_PLUGIN) > >>>>> ccflags-y += $(call cc-option, -fno-stack-protector) > >>>>> ccflags-y += -DDISABLE_BRANCH_PROFILING > >>>>> +ccflags-y += $(CONFIG_CC_OPT_INLINE_MEMSET) > >>>>> ccflags-y += -ffreestanding -fasynchronous-unwind-tables > >>>>> ccflags-remove-y := $(CC_FLAGS_FTRACE) > >>>>> ldflags-y := -Wl,--hash-style=both -nostdlib -shared -z noexecstack $(CLANG_FLAGS) > >>>>> diff --git a/arch/riscv/kernel/vdso/Makefile b/arch/riscv/kernel/vdso/Makefile > >>>>> index 8dbf2532a573..c023046a3fd7 100644 > >>>>> --- a/arch/riscv/kernel/vdso/Makefile > >>>>> +++ b/arch/riscv/kernel/vdso/Makefile > >>>>> @@ -36,6 +36,7 @@ endif > >>>>> ccflags-y := -fno-stack-protector > >>>>> ccflags-y += -DDISABLE_BRANCH_PROFILING > >>>>> ccflags-y += -fno-builtin > >>>>> +ccflags-y += $(CONFIG_CC_OPT_INLINE_MEMSET) > >>>>> ccflags-y += $(KBUILD_BASE_ISA)$(CFI_MARCH) > >>>>> ccflags-y += $(CFI_FULL) > >>>>> asflags-y += $(KBUILD_BASE_ISA)$(CFI_MARCH) > >>>>> diff --git a/arch/s390/kernel/vdso/Makefile b/arch/s390/kernel/vdso/Makefile > >>>>> index 35c834b895ec..54bcf2984ca1 100644 > >>>>> --- a/arch/s390/kernel/vdso/Makefile > >>>>> +++ b/arch/s390/kernel/vdso/Makefile > >>>>> @@ -29,6 +29,7 @@ KBUILD_CFLAGS_VDSO := $(filter-out -munaligned-symbols,$(KBUILD_CFLAGS_VDSO)) > >>>>> KBUILD_CFLAGS_VDSO := $(filter-out -fno-asynchronous-unwind-tables,$(KBUILD_CFLAGS_VDSO)) > >>>>> KBUILD_CFLAGS_VDSO += -fPIC -fno-common -fno-builtin -fasynchronous-unwind-tables > >>>>> KBUILD_CFLAGS_VDSO += -fno-stack-protector $(DISABLE_KSTACK_ERASE) > >>>>> +KBUILD_CFLAGS_VDSO += $(CONFIG_CC_OPT_INLINE_MEMSET) > >>>>> ldflags-y := -shared -soname=linux-vdso.so.1 \ > >>>>> --hash-style=both --build-id=sha1 \ > >>>>> $(call ld-option, --eh-frame-hdr) -T > >>>>> diff --git a/arch/x86/entry/vdso/vdso64/Makefile b/arch/x86/entry/vdso/vdso64/Makefile > >>>>> index 7c0790065b5e..c2353a065279 100644 > >>>>> --- a/arch/x86/entry/vdso/vdso64/Makefile > >>>>> +++ b/arch/x86/entry/vdso/vdso64/Makefile > >>>>> @@ -14,7 +14,7 @@ vobjs-$(CONFIG_X86_SGX) += vsgx.o > >>>>> vobjs-$(CONFIG_FUTEX_ROBUST_UNLOCK) += vfutex.o > >>>>> > >>>>> # Compilation flags > >>>>> -flags-y := -DBUILD_VDSO64 -m64 -mcmodel=small > >>>>> +flags-y := -DBUILD_VDSO64 -m64 -mcmodel=small $(CONFIG_CC_OPT_INLINE_MEMSET) > >>>>> > >>>>> # The location of this include matters! > >>>>> include $(src)/../common/Makefile.include > >>>>> diff --git a/init/Kconfig b/init/Kconfig > >>>>> index 8583d9f06c52..ff3f8475dd2f 100644 > >>>>> --- a/init/Kconfig > >>>>> +++ b/init/Kconfig > >>>>> @@ -173,6 +173,13 @@ config CC_HAS_ALLOC_TOKEN > >>>>> config CC_HAS_MULTIDIMENSIONAL_NONSTRING > >>>>> def_bool $(success,echo 'char tag[][4] __attribute__((__nonstring__)) = { };' | $(CC) $(CLANG_FLAGS) -x c - -c -o /dev/null -Werror) > >>>>> > >>>>> +config CC_HAS_OPT_INLINE_MEMSET > >>>>> + def_bool $(cc-option,-finline-stringops=memset) > >>>>> + > >>>>> +config CC_OPT_INLINE_MEMSET > >>>>> + string > >>>>> + default "-finline-stringops=memset" if CC_HAS_OPT_INLINE_MEMSET > >>>>> + > >>>>> config LD_CAN_USE_KEEP_IN_OVERLAY > >>>>> # ld.lld prior to 21.0.0 did not support KEEP within an overlay description > >>>>> # https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fllvm%2Fllvm-project%2Fpull%2F130661&data=05%7C02%7Cchristophe.leroy%40csgroup.eu%7C4df96063ffd94e6204df08df1bb54e3d%7C8b87af7d86474dc78df45f69a2011bb5%7C0%7C0%7C639260137659727352%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=03eAQvPTDs%2FN28bYiiZAVYcx2JFSkuOM7x2iwFU%2F%2FxA%3D&reserved=0 > >>>>> diff --git a/lib/vdso/getrandom.c b/lib/vdso/getrandom.c > >>>>> index 2851afa9154f..f5cad5641985 100644 > >>>>> --- a/lib/vdso/getrandom.c > >>>>> +++ b/lib/vdso/getrandom.c > >>>>> @@ -29,6 +29,22 @@ > >>>>> } \ > >>>>> } while (0) > >>>>> > >>>>> +#if __has_builtin(__builtin_memset_inline) > >>>>> +#define memset_inline(dst, value, size) __builtin_memset_inline(dst, value, size) > >>>>> +#elif IS_ENABLED(CONFIG_CC_HAS_OPT_INLINE_MEMSET) > >>>>> +#define memset_inline(dst, value, size) __builtin_memset(dst, value, size) > >>>>> +#else > >>>>> +static inline void *memset_inline(void *dst, int value, size_t size) > >>>>> +{ > >>>>> + char *d = dst; > >>>>> + > >>>>> + while (size--) > >>>>> + *d++ = value; > >>>>> + > >>>>> + return d; > >>>>> +} > >>>>> +#endif > >>>> > >>>> Does this work? > >>>> https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgodbolt.org%2Fz%2FTx6EaGMfb&data=05%7C02%7Cchristophe.leroy%40csgroup.eu%7C4df96063ffd94e6204df08df1bb54e3d%7C8b87af7d86474dc78df45f69a2011bb5%7C0%7C0%7C639260137659741160%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=Xv0rle85Js5BH2qNUL4q2Iv2ZwgJhJ4FaTuHYAvvEVo%3D&reserved=0 > >>> > >>> Hmmm...possibly. > >>> https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgodbolt.org%2Fz%2Fec9rzd9Yf&data=05%7C02%7Cchristophe.leroy%40csgroup.eu%7C4df96063ffd94e6204df08df1bb54e3d%7C8b87af7d86474dc78df45f69a2011bb5%7C0%7C0%7C639260137659754022%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=bLajY6c3CbYOZMJlBA4bYlVE3bNVc%2Fxe1KYk0rUJgjM%3D&reserved=0 > >>> I don't get it... > >> > >> Just keep it under 2 pages, it will be fine: > >> https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgodbolt.org%2Fz%2FqqoMqfxev&data=05%7C02%7Cchristophe.leroy%40csgroup.eu%7C4df96063ffd94e6204df08df1bb54e3d%7C8b87af7d86474dc78df45f69a2011bb5%7C0%7C0%7C639260137659763804%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=Bcp1%2B%2Fir05tsPwf08OQkJx4vDkPliaSppam1e%2BTPprk%3D&reserved=0 > > > > https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgodbolt.org%2Fz%2F9W9f5a7Wx&data=05%7C02%7Cchristophe.leroy%40csgroup.eu%7C4df96063ffd94e6204df08df1bb54e3d%7C8b87af7d86474dc78df45f69a2011bb5%7C0%7C0%7C639260137659773169%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=YPGYXcKrnM4e1Q2nHdshRUaMT36w%2BRkHuIWIgcbpA94%3D&reserved=0 > > > > Apparently not on RISCV, which is what prompted this patch in the first > > place. So I suspect Nathan's v2 here is the way to go. > > > Don't you have -fno-builtin on RISCV like we have on powerpc ? I think Nick mentioned this led to other problems and didn't exactly solve the problem.