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 EB3D5C00140 for ; Mon, 8 Aug 2022 10:40:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234589AbiHHKkH (ORCPT ); Mon, 8 Aug 2022 06:40:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58142 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232528AbiHHKkG (ORCPT ); Mon, 8 Aug 2022 06:40:06 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D970FA1B9 for ; Mon, 8 Aug 2022 03:40:04 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 7677E6105D for ; Mon, 8 Aug 2022 10:40:04 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C9B9AC433C1; Mon, 8 Aug 2022 10:40:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1659955203; bh=8T4tJN0mEWGMZDnn9v3qiuDFgGhyI8V1fDSNzDI/SAc=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=XA/GanuY6m4drh+sZleZ+GuIi6F//tU6AYQ7sORf52taxwP/c+0mwXEzAVOOHgMEW 9OHZRfpzOYZ5jasj2lYkveY0MjpUFG9nq8+qD9J72jYY40eY9Tg7ReDYz3FFT4Pq5+ OJQgN0lkwqKaTj7AG9EvwzLHPJO0622pc+TKIwsywp5qleMbDcfi1lZ6DXjMCefZKn LtImiA4OZLPbkFB5uxe6Ut75vJk8brbNhb7J6NErjNWf1Cn2e/whfQE4fwEoDxhfcD 9kjttohPigrSoblsncXScomGonhv/3fvSY+gACbVYLiimkVI8rBbFmWNJToOfE6hSv CnQCFIpczWG4w== Received: from sofa.misterjones.org ([185.219.108.64] helo=why.misterjones.org) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1oL0Az-001dfr-JL; Mon, 08 Aug 2022 11:40:01 +0100 Date: Mon, 08 Aug 2022 11:40:01 +0100 Message-ID: <87czdbvx1a.wl-maz@kernel.org> From: Marc Zyngier To: eric.auger@redhat.com Cc: Ricardo Koller , kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu, andrew.jones@linux.dev, alexandru.elisei@arm.com, oliver.upton@linux.dev, reijiw@google.com Subject: Re: [kvm-unit-tests PATCH v2 3/3] arm: pmu: Check for overflow in the low counter in chained counters tests In-Reply-To: <289609de-ca61-2257-caf0-daedaf6c9bc3@redhat.com> References: <20220803182328.2438598-1-ricarkol@google.com> <20220803182328.2438598-4-ricarkol@google.com> <289609de-ca61-2257-caf0-daedaf6c9bc3@redhat.com> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM-LB/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL-LB/10.8 EasyPG/1.0.0 Emacs/27.1 (x86_64-pc-linux-gnu) MULE/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: eric.auger@redhat.com, ricarkol@google.com, kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu, andrew.jones@linux.dev, alexandru.elisei@arm.com, oliver.upton@linux.dev, reijiw@google.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On Thu, 04 Aug 2022 19:21:49 +0100, Eric Auger wrote: > > I definitively missed that spec detail when originally writing the test, > thank you for fixing. To be fair, it is only in a very recent version of the ARM ARM that this detail came to light, and we collectively misunderstood the spec for a few years, resulting in a over-complicated KVM infrastructure (the new emulation code is so much simpler). BTW, I think I forgot to Cc you and Andrew on the KVM rework at [1], sorry about that. Thanks, M. [1] https://lore.kernel.org/kvm/20220805135813.2102034-1-maz@kernel.org -- Without deviation from the norm, progress is not possible.