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=-4.0 required=3.0 tests=BAYES_00,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 DFE9DC433DB for ; Wed, 13 Jan 2021 17:28:00 +0000 (UTC) Received: from mm01.cs.columbia.edu (mm01.cs.columbia.edu [128.59.11.253]) by mail.kernel.org (Postfix) with ESMTP id 3341E23406 for ; Wed, 13 Jan 2021 17:27:59 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3341E23406 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvmarm-bounces@lists.cs.columbia.edu Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 838AD4B150; Wed, 13 Jan 2021 12:27:59 -0500 (EST) X-Virus-Scanned: at lists.cs.columbia.edu Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id NwVqeSceYfnw; Wed, 13 Jan 2021 12:27:58 -0500 (EST) Received: from mm01.cs.columbia.edu (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 833E04B1C8; Wed, 13 Jan 2021 12:27:58 -0500 (EST) Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id B36564B1A9 for ; Wed, 13 Jan 2021 12:27:57 -0500 (EST) X-Virus-Scanned: at lists.cs.columbia.edu Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id KItZUZ0+d7Tk for ; Wed, 13 Jan 2021 12:27:53 -0500 (EST) Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by mm01.cs.columbia.edu (Postfix) with ESMTPS id 0ADD04B19C for ; Wed, 13 Jan 2021 12:27:53 -0500 (EST) Received: from disco-boy.misterjones.org (disco-boy.misterjones.org [51.254.78.96]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id A927520739; Wed, 13 Jan 2021 17:27:51 +0000 (UTC) Received: from disco-boy.misterjones.org ([51.254.78.96] helo=www.loen.fr) by disco-boy.misterjones.org with esmtpsa (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (Exim 4.94) (envelope-from ) id 1kzjvx-007JbX-Ip; Wed, 13 Jan 2021 17:27:49 +0000 MIME-Version: 1.0 Date: Wed, 13 Jan 2021 17:27:49 +0000 From: Marc Zyngier To: Quentin Perret Subject: Re: [RFC PATCH v2 13/26] KVM: arm64: Enable access to sanitized CPU features at EL2 In-Reply-To: References: <20210108121524.656872-1-qperret@google.com> <20210108121524.656872-14-qperret@google.com> User-Agent: Roundcube Webmail/1.4.9 Message-ID: X-Sender: maz@kernel.org X-SA-Exim-Connect-IP: 51.254.78.96 X-SA-Exim-Rcpt-To: qperret@google.com, catalin.marinas@arm.com, will@kernel.org, james.morse@arm.com, julien.thierry.kdev@gmail.com, suzuki.poulose@arm.com, robh+dt@kernel.org, frowand.list@gmail.com, devicetree@vger.kernel.org, android-kvm@google.com, linux-kernel@vger.kernel.org, kernel-team@android.com, kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org, tabba@google.com, mark.rutland@arm.com, dbrazdil@google.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false Cc: devicetree@vger.kernel.org, kernel-team@android.com, Frank Rowand , android-kvm@google.com, Catalin Marinas , Fuad Tabba , linux-kernel@vger.kernel.org, Rob Herring , linux-arm-kernel@lists.infradead.org, Will Deacon , kvmarm@lists.cs.columbia.edu X-BeenThere: kvmarm@lists.cs.columbia.edu X-Mailman-Version: 2.1.14 Precedence: list List-Id: Where KVM/ARM decisions are made List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu On 2021-01-13 14:35, Quentin Perret wrote: > On Wednesday 13 Jan 2021 at 14:23:03 (+0000), Quentin Perret wrote: >> Good point, that would be nice indeed. Can I use that from outside an >> __init function? > > Just gave it a go, and the answer to this appears to be yes, > surprisingly -- I was expecting a compile-time warning similar to what > we get when non-__init code calls into __init, but that doesn't seem to > trigger here. Anyways, I'll add the annotation in v3. That's surprising. I'd definitely expect something to explode... Do you have CONFIG_DEBUG_SECTION_MISMATCH=y? M. -- Jazz is not dead. It just smells funny... _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm 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=-4.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 42B46C433E0 for ; Wed, 13 Jan 2021 17:29:42 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id D93B722D05 for ; Wed, 13 Jan 2021 17:29:41 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D93B722D05 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Type: Content-Transfer-Encoding:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:Message-ID:References:In-Reply-To:Subject:To:From: Date:MIME-Version:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=5UbUt1VZIMZjr1E88bmkz/5y4UU4RX6UTl6UHkVanUc=; b=1ECflOaDMUs8IDAy9lwm5Gumx szZwCsBl4cnBf0fCQbxUIa1lFB3DXAlIXFR2yU/5Y2fBPjKe64B6K9NYHBrK2k2iNSSbOqUELfmbI TUrFpORvCcCjEtuO6BBwhq4Oow43elsuIkJHkL5wfXY4cWtYzRvjOqU9d+T9gNLcUhRyX/Cu7Ts4J ZIggpXYyMGpDIKRsewV7Q5o/uHRV8WqowT2V9DAVlfRGxwNdF6/dKwB7hGJtzBzhMrGUy/V3TdiYu 9jPvot3wmjH27qeBySJ35nTiGsttym4/IDrP81ItPc4YbjvMY3Q0P1kf8+uXP+pyc63gRiWnNBg5N cUDylSPoA==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kzjw4-0002Zr-0B; Wed, 13 Jan 2021 17:27:56 +0000 Received: from mail.kernel.org ([198.145.29.99]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kzjw1-0002ZO-Ft for linux-arm-kernel@lists.infradead.org; Wed, 13 Jan 2021 17:27:54 +0000 Received: from disco-boy.misterjones.org (disco-boy.misterjones.org [51.254.78.96]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id A927520739; Wed, 13 Jan 2021 17:27:51 +0000 (UTC) Received: from disco-boy.misterjones.org ([51.254.78.96] helo=www.loen.fr) by disco-boy.misterjones.org with esmtpsa (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (Exim 4.94) (envelope-from ) id 1kzjvx-007JbX-Ip; Wed, 13 Jan 2021 17:27:49 +0000 MIME-Version: 1.0 Date: Wed, 13 Jan 2021 17:27:49 +0000 From: Marc Zyngier To: Quentin Perret Subject: Re: [RFC PATCH v2 13/26] KVM: arm64: Enable access to sanitized CPU features at EL2 In-Reply-To: References: <20210108121524.656872-1-qperret@google.com> <20210108121524.656872-14-qperret@google.com> User-Agent: Roundcube Webmail/1.4.9 Message-ID: X-Sender: maz@kernel.org X-SA-Exim-Connect-IP: 51.254.78.96 X-SA-Exim-Rcpt-To: qperret@google.com, catalin.marinas@arm.com, will@kernel.org, james.morse@arm.com, julien.thierry.kdev@gmail.com, suzuki.poulose@arm.com, robh+dt@kernel.org, frowand.list@gmail.com, devicetree@vger.kernel.org, android-kvm@google.com, linux-kernel@vger.kernel.org, kernel-team@android.com, kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org, tabba@google.com, mark.rutland@arm.com, dbrazdil@google.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210113_122753_627108_2D3A6220 X-CRM114-Status: GOOD ( 13.76 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , devicetree@vger.kernel.org, kernel-team@android.com, Frank Rowand , Suzuki K Poulose , android-kvm@google.com, Catalin Marinas , Fuad Tabba , linux-kernel@vger.kernel.org, Rob Herring , James Morse , linux-arm-kernel@lists.infradead.org, David Brazdil , Will Deacon , kvmarm@lists.cs.columbia.edu, Julien Thierry Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 2021-01-13 14:35, Quentin Perret wrote: > On Wednesday 13 Jan 2021 at 14:23:03 (+0000), Quentin Perret wrote: >> Good point, that would be nice indeed. Can I use that from outside an >> __init function? > > Just gave it a go, and the answer to this appears to be yes, > surprisingly -- I was expecting a compile-time warning similar to what > we get when non-__init code calls into __init, but that doesn't seem to > trigger here. Anyways, I'll add the annotation in v3. That's surprising. I'd definitely expect something to explode... Do you have CONFIG_DEBUG_SECTION_MISMATCH=y? M. -- Jazz is not dead. It just smells funny... _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel 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=-4.0 required=3.0 tests=BAYES_00,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 D0AF6C433E0 for ; Wed, 13 Jan 2021 17:28:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7B77B20739 for ; Wed, 13 Jan 2021 17:28:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726379AbhAMR2c (ORCPT ); Wed, 13 Jan 2021 12:28:32 -0500 Received: from mail.kernel.org ([198.145.29.99]:54590 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726996AbhAMR2c (ORCPT ); Wed, 13 Jan 2021 12:28:32 -0500 Received: from disco-boy.misterjones.org (disco-boy.misterjones.org [51.254.78.96]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id A927520739; Wed, 13 Jan 2021 17:27:51 +0000 (UTC) Received: from disco-boy.misterjones.org ([51.254.78.96] helo=www.loen.fr) by disco-boy.misterjones.org with esmtpsa (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (Exim 4.94) (envelope-from ) id 1kzjvx-007JbX-Ip; Wed, 13 Jan 2021 17:27:49 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit Date: Wed, 13 Jan 2021 17:27:49 +0000 From: Marc Zyngier To: Quentin Perret Cc: Catalin Marinas , Will Deacon , James Morse , Julien Thierry , Suzuki K Poulose , Rob Herring , Frank Rowand , devicetree@vger.kernel.org, android-kvm@google.com, linux-kernel@vger.kernel.org, kernel-team@android.com, kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org, Fuad Tabba , Mark Rutland , David Brazdil Subject: Re: [RFC PATCH v2 13/26] KVM: arm64: Enable access to sanitized CPU features at EL2 In-Reply-To: References: <20210108121524.656872-1-qperret@google.com> <20210108121524.656872-14-qperret@google.com> User-Agent: Roundcube Webmail/1.4.9 Message-ID: X-Sender: maz@kernel.org X-SA-Exim-Connect-IP: 51.254.78.96 X-SA-Exim-Rcpt-To: qperret@google.com, catalin.marinas@arm.com, will@kernel.org, james.morse@arm.com, julien.thierry.kdev@gmail.com, suzuki.poulose@arm.com, robh+dt@kernel.org, frowand.list@gmail.com, devicetree@vger.kernel.org, android-kvm@google.com, linux-kernel@vger.kernel.org, kernel-team@android.com, kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org, tabba@google.com, mark.rutland@arm.com, dbrazdil@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: devicetree@vger.kernel.org On 2021-01-13 14:35, Quentin Perret wrote: > On Wednesday 13 Jan 2021 at 14:23:03 (+0000), Quentin Perret wrote: >> Good point, that would be nice indeed. Can I use that from outside an >> __init function? > > Just gave it a go, and the answer to this appears to be yes, > surprisingly -- I was expecting a compile-time warning similar to what > we get when non-__init code calls into __init, but that doesn't seem to > trigger here. Anyways, I'll add the annotation in v3. That's surprising. I'd definitely expect something to explode... Do you have CONFIG_DEBUG_SECTION_MISMATCH=y? M. -- Jazz is not dead. It just smells funny...