From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from canpmsgout11.his.huawei.com (canpmsgout11.his.huawei.com [113.46.200.226]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 084B7455199; Fri, 11 Sep 2026 08:20:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=113.46.200.226 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789114830; cv=none; b=TDQAHTzOKvzrmI+ofjaN1QgJe+osTAxV7bUAWn7A4PyGiZN4xJt5rddrE8oSLUuLip5j5T8UxIPE2TZ/YMyCObcdTr4w0qpEQ6sV+7TJO37wd3I64LGiSyFnnVEXnfTSvWaOjwH9+yWVRcWyPfG3fGCs+Doyp1KMyHKNy4nNaTs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789114830; c=relaxed/simple; bh=00IoiYJMvc428TUnHqRDhNjDZIuoPykN8PPXnyrtpcU=; h=Message-ID:Date:MIME-Version:Subject:To:CC:References:From: In-Reply-To:Content-Type; b=eBzaZryqiwkMXPfM7kUfzmWFDCKW/UeBEVODidLEXI0dsVbA6lIuT5astznnjnPGUb4WiXLgMeH6J5GMNTHejBxHBGXmA1ut3XhJShB1CaPeKnL1X8xFARdnP84OWi89pwbCManEJUbhhk65r9sn4OUZw0DQyOo6swlxqwPWCJ4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; dkim=pass (1024-bit key) header.d=huawei.com header.i=@huawei.com header.b=VUXwpXLP; arc=none smtp.client-ip=113.46.200.226 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=huawei.com header.i=@huawei.com header.b="VUXwpXLP" 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 Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: 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-ClientProxiedBy: kwepems200001.china.huawei.com (7.221.188.67) To kwepemk200008.china.huawei.com (7.202.194.74) 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 }, >