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 A66ECC88E4C for ; Fri, 11 Sep 2026 11:26:10 +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=r9KGf4/m70RhRiVHEsNWEs7ThjM49jDpalLqOzOzbIw=; b=h3afLRl0rNinOq F6wfLSENJ9Qkdaq0mxdDsauHsAD0IrZBtuV9osvlIA8/hlcaJ8W/nFAsVnUb3m9ofyK7USXZadXCV YiboRquKwPnqGp0WZAq6OUOVTb8izI7LmOS0ou8h7z8L+xXwDB3ybqaee3YyVGxaILCQoamk9N0VG d9/uAGjl8QGZ5y8MS4Kfl7MdgYtUbFo4zO7a+a1Km44Fwvu4cDjVcDuWn6TbkRFXBiS/DvKvJCtFd od2EgdjFmEC/gpZrUK5ks5atCliZCTS3s8B3m1CxkfkdxjSxvgimDaYruYTNc4uVVqbRy4IXSG1Em YtvvGfJfWzF0g7snuAqw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1x4zOF-0000000GUdv-4BNh; Fri, 11 Sep 2026 11:25:56 +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 1x4zOD-0000000GUbI-1kB9; Fri, 11 Sep 2026 11:25:53 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id D3D5A60A59; Fri, 11 Sep 2026 11:25:52 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 58E071F000FF; Fri, 11 Sep 2026 11:25:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1789125952; bh=limdG7iqTJH4ElLSnmTuuK3uee/BjGUPcvZqHysHW0g=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=ovdJkn1+n2Xa/HSnex3YjDFO2KbfhBxhc0ZdaLdHyehs1gqEr51Nzw2uwYipYaf+3 ShJd7JPRyZyDSCQfG1A/B1KlXaZIsedvL3nJMTxIhzKoTY8n59OEYX2qKsowcDVzF8 pu44Si6aULXKS8aAqrd9mM9S6BBNtnqbk81Eaaru496HCuu1b71N/gTwC45BRGxYg0 mj5FhIO3UbgDmDuo2E4Ezz5g76L6FGXyqaHbYCfq9tDi5eK3K0qQga4bPbTWgZmtub eLBHaP6WpPrv35lwy0BOxJ32kvrvGPCDN617FVQ1ORpnq/7MZ3nMUdH3GBDnOksEhS 6Wc0bT7UpLvlQ== Date: Fri, 11 Sep 2026 12:25:38 +0100 From: "Lorenzo Stoakes (ARM)" To: Nick Desaulniers Cc: Nathan Chancellor , Linus Torvalds , Nicolas Schier , Bill Wendling , Justin Stitt , Masahiro Yamada , Alexey Gladkov , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Arnd Bergmann , Catalin Marinas , Will Deacon , Mark Rutland , Ard Biesheuvel , Ilias Apalodimas , Josh Poimboeuf , Peter Zijlstra , Miguel Ojeda , Boqun Feng , Gary Guo , =?utf-8?B?QmrDtnJu?= Roy Baron , Benno Lossin , Andreas Hindborg , Alice Ryhl , Trevor Gross , Danilo Krummrich , Daniel Almeida , Tamir Duberstein , Alexandre Courbot , Onur =?utf-8?B?w5Z6a2Fu?= , Jonathan Corbet , Randy Dunlap , linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, llvm@lists.linux.dev, linux-riscv@lists.infradead.org, linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-efi@vger.kernel.org, rust-for-linux@vger.kernel.org, linux-doc@vger.kernel.org, Jens Axboe Subject: Re: [PATCH 00/23] kbuild: significantly speed up kernel builds Message-ID: References: <20260908-build-speedup-v1-0-5dc1ac01672d@kernel.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: 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 T24gV2VkLCBTZXAgMDksIDIwMjYgYXQgMDM6MDk6MTBQTSAtMDcwMCwgTmljayBEZXNhdWxuaWVy cyB3cm90ZToKPiBPbiBXZWQsIFNlcCA5LCAyMDI2IGF0IDc6MTfigK9BTSBMb3JlbnpvIFN0b2Fr ZXMgKEFSTSkgPGxqc0BrZXJuZWwub3JnPiB3cm90ZToKPiA+Cj4gPiBPbiBUdWUsIFNlcCAwOCwg MjAyNiBhdCAwMjowNjoxOFBNIC0wNzAwLCBOaWNrIERlc2F1bG5pZXJzIHdyb3RlOgo+ID4gPiBJ dCB3b3VsZCBiZSBjb29sIGlmIHlvdXIgTExNIGNvdWxkIGdlbmVyYXRlIGFueSB2aXN1YWxpemF0 aW9ucyBvZgo+ID4gPiB3aGF0J3MgZ29pbmcgb24gZHVyaW5nIGEgYnVpbGQ/IFNlZWluZyB3aGF0 J3Mgc2VyaWFsIHZzIHBhcmFsbGVsaXplZAo+ID4gPiBpbiBwZXJoYXBzIHVzZWZ1bC4gUGFydGlj dWxhcmx5IHdoZW4geW91IGNhbiBjb21wYXJlIHRoZSBiZWZvcmUgdnMKPiA+ID4gYWZ0ZXIuCj4g Pgo+ID4gR3JlYXQgaWRlYSEKPiA+Cj4gPiBJIGFza2VkIGl0IHRvIGRvIGV4YWN0bHkgdGhhdCwg YXR0YWNoZWQuIENhbWUgb3V0IHF1aXRlIG5pY2UgYW5kIHN1bXMgaXQgdXAKPiA+IG5pY2VseSA6 KQo+ID4KPiA+IEl0IGFsc28gcHJvdmlkZWQgYW4gQVNDSUkgdmVyc2lvbjoKPgo+IHVucmVhZGFi bGUsIGJ1dCB0aGUgcGljdHVyZXMgeW91IGF0dGFjaGVkIGFyZSB3b3J0aCBhIHRob3VzYW5kIHdv cmRzLgoKOikgWWVhaCBJIGRpZG4ndCB0aGluayB0aGUgQVNDSUkgd2FzIGFtYXppbmcgZWl0aGVy IGJ1dCBmdW4gdGhhdCBpdCB0cmllZCA7KSBhbmQKeWVhaCBJIHdhcyBzdXJwcmlzZWQgYXQgaG93 IG5pY2UgdGhlIGdyYXBoaWMgY2FtZSBvdXQuLi4hCgo+IFBhcnRpY3VsYXJseSBleGNpdGluZyBh cmUgdGhlIHNwZWVkIHVwcyB0byB0aGUgdXN1YWwgZWRpdCtjb21waWxlK3J1bgo+IGxvb3AuCgpZ ZXMhIEkgbmV2ZXIgcmVhbGx5IGV4cGVjdGVkIHRoYXQgb3V0IG9mIHRoaXMhCgpJIG1lYW4gSSBk aWRuJ3QgdGhpbmsgdGhlcmUnZCBiZSBzdWNoIGEgYmlnIHNwZWVkIHVwIGluIGdlbmVyYWwsIHRo b3VnaCBJCmV4cGVjdGVkIGF0IGxlYXN0IHRvIHNoYXZlIG9mZiBhIGJpZyBjaHVuayBvZiB0aGUg ZGVsdGEgYmV0d2VlbiBjb21waWxlICsgZnVsbApidWlsZCBvbiBhIGRlZmNvbmZpZyBjbGVhbiBi dWlsZC4KCkJ1dCB0aGUgaW5jcmVtZW50YWwvbm9vcCBidWlsZCBpbXByb3ZlbWVudHMgYXJlIHJl YWxseSBpbXBvcnRhbnQgdG8gZGF5LXRvLWRheQp1c2UuCgo+Cj4gRm9yIHRoZSBibHVlIGdyYXBo ICh0aGUgdG9wIG9uZSwgZmlyc3QpLCBhbnkgaWRlYSB3aGF0IHRoYXQgZGlwIGluIHRoZQo+IG1p ZGRsZSBpcz8gVGhhdCdzIGFsd2F5cyB3aGF0IGFubm95ZWQgbWUuCgpUaGF0J3MgbGQgLXIgb2Yg dm1saW51eC5vLCB0aGVuIG1vZHBvc3QgYW5kIG9ianRvb2wgd2hpY2ggYXJlIGNyaXRpY2FsIHBh dGgKYmxvY2tlcnMgb24gdGhlIHJlc3Qgb2YgdGhlIGJ1aWxkLgoKQmVmb3JlIHRoZSBzZXJpZXMg dGhhdCB3YXMgMjMgc2Vjb25kcyBmb3IgYWxsbW9kY29uZmlnIG9uIHRoZSB0aHJlYWRyaXBwZXIs IG5vdwo3cyA6KQoKVGhlcmUncyBzdGlsbCBtb3JlIG9ianRvb2wgc3R1ZmYgdGhhdCBjb3VsZCBi ZSBkb25lIHRoYXQgSSBvcHRlZCBub3QgdG8gZG8geWV0LAppdCB0YWtlcyA2cyB0byBydW4gc28g ZG9taW5hdGluZy4KCj4gLS0KPiBUaGFua3MsCj4gfk5pY2sgRGVzYXVsbmllcnMKCi0tCkNoZWVy cywgTG9yZW56bwoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X18KbGludXgtcmlzY3YgbWFpbGluZyBsaXN0CmxpbnV4LXJpc2N2QGxpc3RzLmluZnJhZGVhZC5v cmcKaHR0cDovL2xpc3RzLmluZnJhZGVhZC5vcmcvbWFpbG1hbi9saXN0aW5mby9saW51eC1yaXNj dgo=