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 lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (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 953B9EB64D7 for ; Fri, 16 Jun 2023 15:38:02 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.550295.859284 (Exim 4.92) (envelope-from ) id 1qABW1-00026O-F1; Fri, 16 Jun 2023 15:37:33 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 550295.859284; Fri, 16 Jun 2023 15:37:33 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1qABW1-00026H-Ar; Fri, 16 Jun 2023 15:37:33 +0000 Received: by outflank-mailman (input) for mailman id 550295; Fri, 16 Jun 2023 15:37:31 +0000 Received: from se1-gles-flk1-in.inumbo.com ([94.247.172.50] helo=se1-gles-flk1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1qABVz-00026B-Pc for xen-devel@lists.xenproject.org; Fri, 16 Jun 2023 15:37:31 +0000 Received: from mo4-p00-ob.smtp.rzone.de (mo4-p00-ob.smtp.rzone.de [85.215.255.22]) by se1-gles-flk1.inumbo.com (Halon) with ESMTPS id b36ee070-0c5b-11ee-8611-37d641c3527e; Fri, 16 Jun 2023 17:37:29 +0200 (CEST) Received: from sender by smtp.strato.de (RZmta 49.6.0 AUTH) with ESMTPSA id y5401az5GFbO8gI (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256 bits)) (Client did not present a certificate); Fri, 16 Jun 2023 17:37:24 +0200 (CEST) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: b36ee070-0c5b-11ee-8611-37d641c3527e ARC-Seal: i=1; a=rsa-sha256; t=1686929844; cv=none; d=strato.com; s=strato-dkim-0002; b=hXlGPjikASoOWrPlfxxrGJYRcCW0YHoJA2CJH5kNikcUujKNjWTGy5dDTHGwuILaxD Jm5BlUs0tvmh61zuvjiZF/y1i8qMaM20hyn0LhVl8zcA/mo9KTEvyPrZXwMIyGAoMWEs erPZTYbM58/t5nlzL8A655mZuK+dzvCEGtJwyOY9MGWC+Q302C4ov1ZYu7PHAkba55i0 HgfY9l5XJ0FpyOv5jN7wIRJvSY9m3dOCNjW1nroar2xXbY+ZjTVr/amaFZvPLyMbqWlY XnKtXY+pmhD59+9JVPAvsn/qTpssuzituitk6RqU7lZFpIN3Bz2GTQ36niOHB3poWYW+ kKQw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; t=1686929844; s=strato-dkim-0002; d=strato.com; h=References:In-Reply-To:Message-ID:Subject:Cc:To:From:Date:Cc:Date: From:Subject:Sender; bh=TOVhKHcZds+z64/Mll4qxdSnkrdEf3civ2YHnUTTv8o=; b=As/c1Ee+N+2i5GSowXKaLTJIDmBrOHtHpxBl10sY+FWhPAP25C2EaX2EnKi4d5u23+ nQugGqmQlQT1cI3PuaDdrkdjoy+OE68az1AJx9FK3Q80P59aZyYkVwAKwuW1vAF3BR4J lW/KZokJs5q4bqkFDfmDEWADnWuZH1LVrJ2KQGjZk1j1moY4gDdLZqT/l8vP/KP1pj7L XWecXlfG9JchjxpI/bdCwWqcdNKPWhYoi8yUYartmD8bEvNIY2FBppezfnrSrubeKDFs kRwA3c2DvxD3cEEto362FqqE6rVB1MuxQRB5RAT2ugZjj+z8kkvSmAGeGWST6hdaD5/h NROw== ARC-Authentication-Results: i=1; strato.com; arc=none; dkim=none X-RZG-CLASS-ID: mo00 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; t=1686929844; s=strato-dkim-0002; d=aepfle.de; h=References:In-Reply-To:Message-ID:Subject:Cc:To:From:Date:Cc:Date: From:Subject:Sender; bh=TOVhKHcZds+z64/Mll4qxdSnkrdEf3civ2YHnUTTv8o=; b=dADoSyZbHHOtf7LO/1DP5V98s4iN3FFG8ri9X7MAyFE5tYv192jLEhI+zb57F1BBCG XCQxUJi84bN18TZhlB49ds2ZQKB1Sr/XJY2EJk6fgypKMFB+VnRpatE8SrS8vT53kUZ3 4tDbBvzCKebt/i5bjvUEDsitL1mVDSZfFE5muys/FSZftU4uKfvbrdZHVklOnkIdj5N1 WGWKwKotJ0G44uehleF8nS+9xMK5b3idgo62S9Rjaf4gURD30a+nmUg8LFEI5+2cflkJ 9/NW7Fim5c5lDu4IXHn5oApK6cRu5jbFyObmOKF20Ork6Z3KUPZyvQ48GPmVBWFfNRkA GsKw== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; t=1686929844; s=strato-dkim-0003; d=aepfle.de; h=References:In-Reply-To:Message-ID:Subject:Cc:To:From:Date:Cc:Date: From:Subject:Sender; bh=TOVhKHcZds+z64/Mll4qxdSnkrdEf3civ2YHnUTTv8o=; b=ep7KPPYUY1YmJp/1sibf4kO54bBwxQlOs2ZQ+qhnChX3Uhzv8Gu7RKRtgsc7ft442y SC0s7MBmsa57kTVUB7AQ== X-RZG-AUTH: ":P2EQZWCpfu+qG7CngxMFH1J+3q8wa/QLpd5ylWvMDX3y/OuD5rXVisR5AB2Ibh3sRFQAfajHZ8Hr2i7N1ImBUHmXWy0PQg==" Date: Fri, 16 Jun 2023 17:37:17 +0200 From: Olaf Hering To: George Dunlap Cc: Jan Beulich , xen-devel@lists.xenproject.org, Juergen Gross , George Dunlap Subject: Re: xentrace buffer size, maxcpus and online cpus Message-ID: <20230616173717.3f264151.olaf@aepfle.de> In-Reply-To: References: <20230530095859.60a3e4ea.olaf@aepfle.de> <578d341d-0c54-de64-73e7-1dfc7e5d7584@suse.com> <20230530220613.4c4da5cc.olaf@aepfle.de> <1b99e58d-338c-02af-eeab-00d691337d00@suse.com> <20230616134708.6b3c6964.olaf@aepfle.de> X-Mailer: Claws Mail 20230601T090920.68bc28c0 hat ein Softwareproblem, kann man nichts machen. MIME-Version: 1.0 Content-Type: multipart/signed; boundary="Sig_/Ezg3xPca+1bliHFynUjPX5R"; protocol="application/pgp-signature"; micalg=pgp-sha256 Content-Transfer-Encoding: 7bit --Sig_/Ezg3xPca+1bliHFynUjPX5R Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable Fri, 16 Jun 2023 15:22:24 +0100 George Dunlap : > I agree; the clear implication is that with smt=3D0, you might have > num_online_cpus() return 4, but cpuids that look like {1, 3, 5, 7}; so you > need the trace buffer array to be of size 8. I see. Apparently some remapping is required to map a cpuid to an index into the trace buffer metadata. Olaf --Sig_/Ezg3xPca+1bliHFynUjPX5R Content-Type: application/pgp-signature Content-Description: Digitale Signatur von OpenPGP -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEE97o7Um30LT3B+5b/86SN7mm1DoAFAmSMga0ACgkQ86SN7mm1 DoApeA/5AWhL4IlRtXTVrf8ffrYm3pGQ10gFf0+moTq5sxjaSEdtY4FyvPGGOcPd Bmw3Dmbte9xPOe9PXxr5vuvBo8MBI0E1LFo4zhIDlTRDT0wQkZwA4eynq0E40OVR D5Ccz0LYINluE9dquIqKU6K0LZ1R5BEQ6cjhhKrsFuujNNDW+C2if0waj1ICPOsg o+ZX5JKkOWIwud5B+YJ7i9ZJh7UF3LhM8l26WEOUdx5mvN1oNzOOl/nvq5H4JLnm xwSqeUupFHhDFg+/1V4+QgBIAZLF9YwLPrAtTbnraJtQwkPGX8tEE0+uQU6pddZU xJcc2Pl7b1UG2kpSxkT3avhOHtxrWa/nVXdKyFnRilkmzOXvddSAnezTYGruT2wF 2wxl10oKVdZMQRnplqaPpCFpdhbBuTHUXbY1rd625+K4dRidaTpVSjJ4OpnlWauH 5vxqH5Ho1TkV0DqDvbdEVUUF4QujbnMOLh2l+W2ePy2OuVojBOdV44rC4cXCBevx f2RvFco/X/Q0Q0K4CDgcPSEJgxkAW/LvCDSwmy6bmM9d9DwCEVftOWGNEcXKlkL9 YwBTLhXpzjmFbBSEPACdpFKRRIuKIcG30vVoRNd0Z0T9a6cJEoaeo78gECiz4yIn Bw2Zj4YVrU7qAJYdXmfH11mIrBrAz1OxJ1akWu4sSl/wdEinZZQ= =3XJg -----END PGP SIGNATURE----- --Sig_/Ezg3xPca+1bliHFynUjPX5R--