From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by sourceware.org (Postfix) with ESMTPS id 45DC83857C66 for ; Wed, 22 Nov 2023 21:04:56 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 45DC83857C66 Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=redhat.com ARC-Filter: OpenARC Filter v1.0.0 sourceware.org 45DC83857C66 Authentication-Results: server2.sourceware.org; arc=none smtp.remote-ip=170.10.129.124 ARC-Seal: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1700687106; cv=none; b=BqBwCMniX2zUnCu9Wl0jfU82MUFkm0+ihvd8+ZQjfqYU8OC8o7JG5RhkYTq8w0xdXYGF+Wmn0/oWBn2Xxwn/GGWuXGKZiQ6uS9b2XOjXzKRFqGA79Rpb8POEqqiwWmpWSaJJVx8GBTOuU8w+XRpWgfYnjeZvbes3ltoJ0Kumqps= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1700687106; c=relaxed/simple; bh=AweX96hSZrgbtRGA4dopOHbUZDxoKFDCLj/+libVIKE=; h=DKIM-Signature:From:To:Subject:Date:Message-ID:MIME-Version; b=J5Ah7H2xVFqKsm1yHflcgr4AfwDnj6SYK0mPNuYy7tQmi+HzBs8Neh1rkNyb96iYW4prYz6jGwEUPqrlmX6voTo5sL5y9OWk8FIHoWsRBFaCbaIgB9vws1xevUWJJafIzC4yxnvoar751pjKKu7q53oJutt+RRtKiDWnn/ds/YU= ARC-Authentication-Results: i=1; server2.sourceware.org DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1700687095; 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: in-reply-to:in-reply-to; bh=f4p2OLTt6Vp/tdWgBuiPyoUJFnV3fg0DXgCTNwpLp/U=; b=VVjuD5b7fNeFPGNvgULkZMXyHiLC1v4i+vgc6EZb5EDJP97VyWM9nqFAjvvuk8M/Vd8gBG WN4AoZJsV+WMpmZKJ+UyAsUhBKnVhP3lggdIVfBTmCfxxU+MzL6MGLtUbxIcIzKsQLLAxh BH7LKUx1w8YE9gc35uLRc88nKuZooo0= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-611-26eC_KZaOMatubXfRWkbaw-1; Wed, 22 Nov 2023 16:04:54 -0500 X-MC-Unique: 26eC_KZaOMatubXfRWkbaw-1 Received: from smtp.corp.redhat.com (int-mx09.intmail.prod.int.rdu2.redhat.com [10.11.54.9]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id D3C17101A52D; Wed, 22 Nov 2023 21:04:53 +0000 (UTC) Received: from greed.delorie.com (unknown [10.22.8.208]) by smtp.corp.redhat.com (Postfix) with ESMTPS id B5BF3492BE0; Wed, 22 Nov 2023 21:04:53 +0000 (UTC) Received: from greed.delorie.com.redhat.com (localhost [127.0.0.1]) by greed.delorie.com (8.15.2/8.15.2) with ESMTP id 3AML4rO1257129; Wed, 22 Nov 2023 16:04:53 -0500 From: DJ Delorie To: Adhemerval Zanella Netto Cc: libc-alpha@sourceware.org, carlos@redhat.com Subject: Re: [patch/idea v2] Add register scrambling to testsuite In-Reply-To: <6f71d0cf-6f2c-4b97-9b75-7b5f495735a1@linaro.org> (message from Adhemerval Zanella Netto on Wed, 22 Nov 2023 11:16:09 -0300) Date: Wed, 22 Nov 2023 16:04:53 -0500 Message-ID: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.9 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H4,RCVD_IN_MSPIKE_WL,SPF_HELO_NONE,SPF_NONE,TXREP,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: Adhemerval Zanella Netto writes: > Maybe also add some state perturbation for ISA extensions, like AVX, VSX, NEON, > etc? The original issue 0218463dd8265ed937622f88ac68c7d984fe0cfc that motivate > this patch was originally for the powerpc vector extension. In my original posting long ago, I proposed that the ISA maintainers provide ISA-specific macros to scramble the appopriate registers if present. I don't have the knowledge to implement that accurately for all (or any) ISAs. My patch is for the framework.