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 X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 17106C433B4 for ; Wed, 31 Mar 2021 21:43:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AE1C560FE8 for ; Wed, 31 Mar 2021 21:43:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229968AbhCaVmh (ORCPT ); Wed, 31 Mar 2021 17:42:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55106 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231180AbhCaVmW (ORCPT ); Wed, 31 Mar 2021 17:42:22 -0400 Received: from mail-ua1-x934.google.com (mail-ua1-x934.google.com [IPv6:2607:f8b0:4864:20::934]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id ED9CCC061574; Wed, 31 Mar 2021 14:42:21 -0700 (PDT) Received: by mail-ua1-x934.google.com with SMTP id h34so6607952uah.5; Wed, 31 Mar 2021 14:42:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ocallahan-org.20150623.gappssmtp.com; s=20150623; h=mime-version:references:in-reply-to:reply-to:from:date:message-id :subject:to:cc; bh=Dm0wbOpFh785zQvfbpu+Gc+GoqlFqm/RgMC8mqoD454=; b=WErKMdfwEEzxHs7ggw/O2PQZpwoXB2Iotis7qJYEo0LRMCZXsa+qYkwiSOCFmPYHSa Liu6m1KZBi2RPMTFSN6sNzBiRYruN286prnZ5ftunCiK7tKu5bIHt7mBwhOZ+H7HTnQF AKw0Au9LcsoOAs4NgfVmrL8a+W37Ub2+pqsY//5W3xDYPFdqHmnlsRvQamuZLFdncL2z YjmXe8tXjicjVLSxR0u/VH82Ks94K1sTf8f16ZZnvDYLVWE73Fx/MusoAtKEfKGRqc+q 4w7yY9ULAMo/gfWNdh0RakFn36LylnUnn4LIU8KJ+f37gOVtSFeTCeaY3Zj+mBqxwgFz qLMQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:reply-to :from:date:message-id:subject:to:cc; bh=Dm0wbOpFh785zQvfbpu+Gc+GoqlFqm/RgMC8mqoD454=; b=eYWm2KA1pt3qNY1kOOWNzB39qhncuSHTmRy0FvClfgahfshFggpoIw1REbKqCEzcLv bHxOEh9DqfVMEKG+YnOm9FeIZrSibPUOmDiBsSy5gfExl8emeLQS6fuDWKwJdMHsdrDu mQjYgmijXSJTDuCbX1JGN2zRbDXb29DPFT+MtAJAnkGszQswGEIiNycP27Abiavmz/AR e1tOGJa8JFezqRkPxxZZic48Qt6dxQrm5zSpIcgPcIljSfrgSGVU4glUyKVt+cnRWJYU 9DyAsILY1ZeRQ+RHUIMpZMUMiXHvXsy0pgm8p+cTSXs3H2tPUnIc3r+rFLX3v+mGBDLN rUDA== X-Gm-Message-State: AOAM531+Yy4IDFtbS/mM6V1qp7wEjN5t+4wRZTA0c4kAOvGhh8io/h4U 6K0QkkLJqiY8WJXZ4HawMGlQjkg20ZGl9WnG+OY= X-Google-Smtp-Source: ABdhPJzQXGO7xNMfiF+fsWwrOhWMH2IoZPkeQ1c/q0a5akhIsplUSQbq7ZQS2Km1iImMQjHLVJxaxaOJ6yhhEwdPiGs= X-Received: by 2002:ab0:4042:: with SMTP id h60mr3070914uad.133.1617226940932; Wed, 31 Mar 2021 14:42:20 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: Reply-To: robert@ocallahan.org From: "Robert O'Callahan" Date: Thu, 1 Apr 2021 10:42:09 +1300 Message-ID: Subject: Re: Candidate Linux ABI for Intel AMX and hypothetical new related features To: Andy Lutomirski Cc: Len Brown , David Laight , Dave Hansen , Andy Lutomirski , Greg KH , "Bae, Chang Seok" , X86 ML , LKML , libc-alpha , Florian Weimer , Rich Felker , Kyle Huey , Keno Fischer , Linux API Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-api@vger.kernel.org For the record, the benefits of dynamic XCR0 for rr recording portability still apply. I guess it'd be useful for CRIU too. We would also benefit from anything that incentivizes increased support for CPUID faulting. Rob -- Su ot deraeppa sah dna Rehtaf eht htiw saw hcihw, efil lanrete eht uoy ot mialcorp ew dna, ti ot yfitset dna ti nees evah ew; deraeppa efil eht. Efil fo Drow eht gninrecnoc mialcorp ew siht - dehcuot evah sdnah ruo dna ta dekool evah ew hcihw, seye ruo htiw nees evah ew hcihw, draeh evah ew hcihw, gninnigeb eht morf saw hcihw taht.