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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 233F3C433F5 for ; Mon, 29 Nov 2021 15:11:20 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 80F756B0071; Mon, 29 Nov 2021 10:11:09 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 7BF896B0072; Mon, 29 Nov 2021 10:11:09 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 687736B0073; Mon, 29 Nov 2021 10:11:09 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0020.hostedemail.com [216.40.44.20]) by kanga.kvack.org (Postfix) with ESMTP id 594596B0071 for ; Mon, 29 Nov 2021 10:11:09 -0500 (EST) Received: from smtpin10.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id 279141836942D for ; Mon, 29 Nov 2021 15:10:59 +0000 (UTC) X-FDA: 78862305480.10.B17BE48 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf13.hostedemail.com (Postfix) with ESMTP id 64FFF105610E for ; Mon, 29 Nov 2021 15:07:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=fGya+d7JQ+VE2Ixm7VmIitr62xoALtxhc2z8CJxZNJE=; b=Z5p2PXVAcRjmbrHa3NKplEsb+o o/aiFiuACfd7c8jVkKm1AZolMeL8KnZTRMbQhIwhcKbBXEq8nH5eM+uUPfojl9m/Y7z4HHK8WUeHK PFxamuEIk3xZp6FLb+6iYBXYxGlt69id6SdwXNRAYjlCWt3J6MDd7uyCs9w+H8slulKxwdiRrxFSe ObpIdHYxv4U+j69nj13JCATwsVMoR5PrgBXS/0M58AVetgT33mp5MYgEFPKtMZeLQfbxO1CmaSGaQ IpmEtUFm3nZbxEK3YWmYxmiq45Jm08HDUZKyl4w23292qiIdBJEWVPsqI67YcY2LIdU6p3rYrgmsx dEJCv0IA==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=noisy.programming.kicks-ass.net) by casper.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1mriG5-0083LL-E4; Mon, 29 Nov 2021 15:07:58 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id C03F9300235; Mon, 29 Nov 2021 16:07:57 +0100 (CET) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id A72942B2FE9E1; Mon, 29 Nov 2021 16:07:57 +0100 (CET) Date: Mon, 29 Nov 2021 16:07:57 +0100 From: Peter Zijlstra To: Thomas Gleixner Cc: Peter Oskolkov , Ingo Molnar , Andrew Morton , Dave Hansen , Andy Lutomirski , Linux Memory Management List , Linux Kernel Mailing List , linux-api@vger.kernel.org, Paul Turner , Ben Segall , Peter Oskolkov , Andrei Vagin , Jann Horn , Thierry Delisle Subject: Re: [PATCH v0.9.1 3/6] sched/umcg: implement UMCG syscalls Message-ID: References: <20211122211327.5931-1-posk@google.com> <20211122211327.5931-4-posk@google.com> <20211124200822.GF721624@worktop.programming.kicks-ass.net> <87r1b2fldw.ffs@tglx> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <87r1b2fldw.ffs@tglx> X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 64FFF105610E X-Stat-Signature: tuzj9kaxzkbf18hh6nw6jms975etoibp Authentication-Results: imf13.hostedemail.com; dkim=pass header.d=infradead.org header.s=casper.20170209 header.b=Z5p2PXVA; dmarc=none; spf=none (imf13.hostedemail.com: domain of peterz@infradead.org has no SPF policy when checking 90.155.50.34) smtp.mailfrom=peterz@infradead.org X-HE-Tag: 1638198478-887704 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Sat, Nov 27, 2021 at 02:16:43AM +0100, Thomas Gleixner wrote: > So yes, this should work, but I hate the sticky nature of TIF_UMCG. I > have no real good idea how to avoid that yet, but let me think about it > some more. Yeah, that, I couldn't come up with anything saner either.