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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5FA04C00140 for ; Fri, 5 Aug 2022 18:46:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241446AbiHESqy (ORCPT ); Fri, 5 Aug 2022 14:46:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46176 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241416AbiHESqv (ORCPT ); Fri, 5 Aug 2022 14:46:51 -0400 Received: from shelob.surriel.com (shelob.surriel.com [96.67.55.147]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B1BBC1EC5C for ; Fri, 5 Aug 2022 11:46:50 -0700 (PDT) Received: from imladris.surriel.com ([96.67.55.152]) by shelob.surriel.com with esmtpsa (TLS1.2) tls TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1oK2LR-0007nN-Bx; Fri, 05 Aug 2022 14:46:49 -0400 Message-ID: <002c12c92bf17fab467c28660abf933e12709183.camel@surriel.com> Subject: Re: [RFC PATCH 5/5] x86/entry: Store CPU info on exception entry From: Rik van Riel To: ira.weiny@intel.com, Borislav Petkov , Dave Hansen Cc: x86@kernel.org, linux-kernel@vger.kernel.org, kernel-team@fb.com Date: Fri, 05 Aug 2022 14:46:48 -0400 In-Reply-To: <20220805173009.3128098-6-ira.weiny@intel.com> References: <20220805173009.3128098-1-ira.weiny@intel.com> <20220805173009.3128098-6-ira.weiny@intel.com> Content-Type: multipart/signed; micalg="pgp-sha256"; protocol="application/pgp-signature"; boundary="=-ky+2NogySQXq+2iwZg1g" User-Agent: Evolution 3.42.4 (3.42.4-1.fc35) MIME-Version: 1.0 Sender: riel@shelob.surriel.com Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --=-ky+2NogySQXq+2iwZg1g Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Fri, 2022-08-05 at 10:30 -0700, ira.weiny@intel.com wrote: > From: Ira Weiny >=20 > The CPU information of an exception is useful in determining where > bad > CPUs are in a large data center. >=20 > Define arch_{save|restore}_auxiliary_pt_regs() and set > ARCH_HAS_PTREGS_AUXILIARY default to yes. >=20 > Store the CPU on exception entry and use it later. >=20 > Cc: Rik van Riel > Suggested-by: Borislav Petkov > Suggested-by: Dave Hansen > Signed-off-by: Ira Weiny Acked-by: Rik van Riel --=20 All Rights Reversed. --=-ky+2NogySQXq+2iwZg1g Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEEKR73pCCtJ5Xj3yADznnekoTE3oMFAmLtZZkACgkQznnekoTE 3oMPfwf/SzHHY5MJ9SXgHddmkMiQqg5au3t7boXsCeXuiSBrqw8wb1anemZvfAlG hAqzfzx0HADaxXpGcoLnhIgv0QqXWMmpwlp+JkTyUnuZQiNU6OWKiWLhqC+mQduD z1C0uZhIOZc7nadcRXIv6ZN3y26SclRQWqz54GRvuOSB/XvefCYwfhlt+OKnzQn1 lp/GQOffG5IzF4KeyiiXOQBJqhUfWwYTC8kDNdjfjdj2Dt+bbGYyyq+3XDp44Ziq YvzP790hb1nPdCCvNYJxVLTqaNUb1yIPpwCF9zQNCEOLNM3gsMn0oZJJFsk1VqPY nzvdZmntoZdznMjbZ3MdfF6XDbQVpQ== =oo38 -----END PGP SIGNATURE----- --=-ky+2NogySQXq+2iwZg1g--