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 42B4DC88E4C for ; Fri, 11 Sep 2026 08:20:45 +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:In-Reply-To:From:References:CC:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=UPlgI6itf/jQAT/aGqHZlGQ1rbaMbhD6LnTalkOaXRQ=; b=XjHLshiflcqQ7lUPSBqGOZ82Gu sjvVYh7iseeLBk5bh1z0gMqUnrRB7l4XsgZSkWrsbV0OCtGzeZxqMT6cd27ShYOoxLssh3ZAIKSBc ECqhcFx002M4tLAd17QxzeWE8zE5XGrCZP/PDXv+/R+xLpuXc4tAOlJbK14pBHEiqJiB57Gv6Q2iE UHmU+Jv12RxXOl8+VS0wkLEazvTmeR3A7JAjiXhq1IM16AOV2n9OmHrSB70EEki4mie1d3dQvASmK Hs1eacv2nd2qP+ntYyEomxP4VfPP/HBPOw9XqWqiVRXJra81hUOBkMG//zw5S98N8uBpGYgzyxoYQ broZnXgA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1x4wUx-0000000G73B-152p; Fri, 11 Sep 2026 08:20:39 +0000 Received: from canpmsgout11.his.huawei.com ([113.46.200.226]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1x4wUr-0000000G725-2zG3 for linux-arm-kernel@lists.infradead.org; Fri, 11 Sep 2026 08:20:35 +0000 dkim-signature: v=1; a=rsa-sha256; d=huawei.com; s=dkim; c=relaxed/relaxed; q=dns/txt; h=From; bh=UPlgI6itf/jQAT/aGqHZlGQ1rbaMbhD6LnTalkOaXRQ=; b=VUXwpXLPX3wlAPyKd9HP3OrmXW/ey4+zvbJbIX499s4n/+IXiH0dkVEQr5TrMy2E3XAeziUBI RR1vctPY0rEiuDKk8KSfefyOOHQNi1FOLtB6ohyZdvDu1rfdf/aZquVFDwQ4S7mK7uJu0FiGKWR iGRHUTDuyAd1BdWFcR4o6Lo= Received: from mail.maildlp.com (unknown [172.19.163.214]) by canpmsgout11.his.huawei.com (SkyGuard) with ESMTPS id 4hh6dd0TMyzKm5t; Fri, 11 Sep 2026 16:09:25 +0800 (CST) Received: from kwepemk200008.china.huawei.com (unknown [7.202.194.74]) by mail.maildlp.com (Postfix) with ESMTPS id 476474056C; Fri, 11 Sep 2026 16:20:24 +0800 (CST) Received: from [10.67.109.254] (10.67.109.254) by kwepemk200008.china.huawei.com (7.202.194.74) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.45; Fri, 11 Sep 2026 16:20:22 +0800 Message-ID: <66752c5a-8bdf-4895-b692-585ccfce3b01@huawei.com> Date: Fri, 11 Sep 2026 16:20:21 +0800 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v6 05/40] KVM: arm64: Make MPAMSM_EL1 accesses UNDEF To: Ben Horgan CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Shaopeng Tan References: <20260313144617.3420416-1-ben.horgan@arm.com> <20260313144617.3420416-6-ben.horgan@arm.com> From: Jinjie Ruan In-Reply-To: <20260313144617.3420416-6-ben.horgan@arm.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit X-Originating-IP: [10.67.109.254] X-ClientProxiedBy: kwepems200001.china.huawei.com (7.221.188.67) To kwepemk200008.china.huawei.com (7.202.194.74) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260911_012034_081173_84B4D444 X-CRM114-Status: GOOD ( 10.48 ) 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 在 2026/3/13 22:45, Ben Horgan 写道: > The MPAMSM_EL1 register controls the MPAM labeling for an SMCU, Streaming > Mode Compute Unit. As there is no MPAM support in KVM, make sure MPAMSM_EL1 > accesses trigger an UNDEF. > > Tested-by: Gavin Shan > Tested-by: Shaopeng Tan > Tested-by: Peter Newman > Tested-by: Zeng Heng > Tested-by: Punit Agrawal > Reviewed-by: Zeng Heng > Reviewed-by: Shaopeng Tan > Reviewed-by: Jonathan Cameron > Reviewed-by: Gavin Shan > Acked-by: Marc Zyngier > Signed-off-by: Ben Horgan > --- > Changes since v2: > Remove paragraph from commit on allowed range of values > --- > arch/arm64/kvm/sys_regs.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c > index 1b4cacb6e918..0edd655934a9 100644 > --- a/arch/arm64/kvm/sys_regs.c > +++ b/arch/arm64/kvm/sys_regs.c > @@ -3376,6 +3376,8 @@ static const struct sys_reg_desc sys_reg_descs[] = { > > { SYS_DESC(SYS_MPAM1_EL1), undef_access }, > { SYS_DESC(SYS_MPAM0_EL1), undef_access }, > + { SYS_DESC(SYS_MPAMSM_EL1), undef_access }, Reviewed-by: Jinjie Ruan > + > { SYS_DESC(SYS_VBAR_EL1), access_rw, reset_val, VBAR_EL1, 0 }, > { SYS_DESC(SYS_DISR_EL1), NULL, reset_val, DISR_EL1, 0 }, >