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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 E872BC79FB6 for ; Wed, 9 Sep 2026 16:55:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc: To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=MWEmkr+zQ6/VVfarQAkrQrbMrQkcnEMf1D5bh/GH5bM=; b=ZQxFHZcvgZtKmwV8k22Of/krbA 9//Wg28amypFyWQDgJdMWMuziBsmQylw8TeatK1GaagNhThaX0SNzcbntXomagWMP1gJTquc/46m+ TaLVlBNNIFKqrMhIYZDzt2997WQ3SIDJQl6KbfAxKcfNdMBElM28Y8LdjoAp3JmCuORWQmNOKryJa j1ytj7WUe24x1Sg1XeYk9AkTQ1AV23w2MUD8pLa+ff21w6APsBC5HYiOddMuBNqvMSJCimmQBKvFu RJfbSQPAlp8ujcDJhOIpnDPeOnTmKmQ5NvfFgsXbyl77YNnfOqTbl0R1Jy/wjWyuMhF1CgtX1chbY ++Cjz4Kw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1x4La7-0000000CP6D-1lUV; Wed, 09 Sep 2026 16:55:31 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1x4La4-0000000CP5O-2d6b for linux-arm-kernel@lists.infradead.org; Wed, 09 Sep 2026 16:55:29 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 987061576; Wed, 9 Sep 2026 09:55:22 -0700 (PDT) Received: from LeoBrasDK.cambridge.arm.com (LeoBrasDK.cambridge.arm.com [10.2.212.21]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 24FB73F7B4; Wed, 9 Sep 2026 09:55:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1788972926; bh=0ZZI/KQsrsxir9xpZ2e67XFkv+lIjYBkixLNLg+JqcA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=p7E4Iz8AEmwE9eJUybEYpXA9pQPs+YN2nE6ETxwxK8uhWohpguGgbsJ11vYrUCiVF oRqlb18xdfzpoDUW/sRj7s7zRMJSUlXUwINHO3u8NJ97dOFg8YgNtWvAahNwrYX2Qp eKi8URD5ojwhccTUcvGBZKwjXsK8MtkPlsklYUzM= From: Leonardo Bras To: Mark Brown Cc: Leonardo Bras , Catalin Marinas , Will Deacon , Marc Zyngier , Joey Gouly , Suzuki K Poulose , Shuah Khan , Oliver Upton , Fuad Tabba , Peter Maydell , Wei-Lin Chang , Yao Yuan , linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org, kvmarm@lists.linux.dev, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v20 11/14] KVM: selftests: arm64: Add GCS to set_id_regs Date: Wed, 9 Sep 2026 17:55:22 +0100 Message-ID: X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260901-arm64-gcs-v20-11-f31750bdfadb@kernel.org> References: <20260901-arm64-gcs-v20-0-f31750bdfadb@kernel.org> <20260901-arm64-gcs-v20-11-f31750bdfadb@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260909_095528_709014_1F2EDDFB X-CRM114-Status: GOOD ( 14.54 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Tue, Sep 01, 2026 at 10:47:09PM +0100, Mark Brown wrote: > Now that GCS is configurable via the ID registers update set_id_regs to > cover ID_AA64PFR1_EL1.GCS. > > Signed-off-by: Mark Brown > --- > tools/testing/selftests/kvm/arm64/set_id_regs.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/tools/testing/selftests/kvm/arm64/set_id_regs.c b/tools/testing/selftests/kvm/arm64/set_id_regs.c > index 7429a1055df5..34e59fbbbe89 100644 > --- a/tools/testing/selftests/kvm/arm64/set_id_regs.c > +++ b/tools/testing/selftests/kvm/arm64/set_id_regs.c > @@ -154,6 +154,7 @@ static const struct reg_ftr_bits ftr_id_aa64pfr0_el1[] = { > > static const struct reg_ftr_bits ftr_id_aa64pfr1_el1[] = { > REG_FTR_BITS(FTR_LOWER_SAFE, ID_AA64PFR1_EL1, DF2, 0), > + REG_FTR_BITS(FTR_LOWER_SAFE, ID_AA64PFR1_EL1, GCS, 0), > REG_FTR_BITS(FTR_LOWER_SAFE, ID_AA64PFR1_EL1, CSV2_frac, 0), > REG_FTR_BITS(FTR_LOWER_SAFE, ID_AA64PFR1_EL1, SSBS, ID_AA64PFR1_EL1_SSBS_NI), > REG_FTR_BITS(FTR_LOWER_SAFE, ID_AA64PFR1_EL1, BT, 0), Check this register for this GCS field, any value >= 0 is safe. Used to test setting id_regs IIUC. If that's correct, then: Reviewed-by: Leonardo Bras Thanks, Leo