From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from sinmsgout03.his.huawei.com (sinmsgout03.his.huawei.com [119.8.177.38]) (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 47F9B36C0DB for ; Mon, 12 Jan 2026 16:28:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=119.8.177.38 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768235337; cv=none; b=UujDFavZHvbZUZGmxHDP424WUjgK0G6K1E2vajQz83mKZcUmvMi+u4vrZGlO8+49SgCjF/iZaPTcnol7Wy+rHhmcnPIanQ+MsUBnfaFHGaXJ2fFF4gyvW1VKwn8JezzPMCCswXnmTnjx12dCfHfJt1rylQnbbB6GVI5Zgp/Rlog= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768235337; c=relaxed/simple; bh=zW/6QXkoGhIQ0B9emspd1pf+7Ckj3VpZWETFkOGu+I8=; h=Date:From:To:CC:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=ilxaa42V/7Pxu6wB4dc3UPaDhnVx9FzTcUEz3W4qH8v8aIwSaJ+1HQ99Cd1LMBl9rQ9rX+d74zDwncuox0l9z9c5abbUBh1YWpUBdn7bUwcgt6m8TZtwAo1m+LEbDKsCeuA7OIeRLpredf38InspiD6IDG5UGQbDGusCuUfjIYI= 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=AeMRjfEs; arc=none smtp.client-ip=119.8.177.38 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="AeMRjfEs" dkim-signature: v=1; a=rsa-sha256; d=huawei.com; s=dkim; c=relaxed/relaxed; q=dns/txt; h=From; bh=A9VektO+CAqvLnE0XPzoW3dtG8/MTTC0nCaZjXHsMNQ=; b=AeMRjfEsuuc2juhgk3xNdgTRVEM3ZYCBydzsqcnLjRTmLEhgy3FXeVtFQKl44yTTUynr6j74L V8HzsNjW77KU1TjGg/cE6SNqdz5B6vG6VqXqwP02Y0VXHwtlNI3hXJ9SokSTFS4+7tyWH8ilFOH pJw6RIT/JOkW3O9O1x0WzHo= Received: from frasgout.his.huawei.com (unknown [172.18.146.33]) by sinmsgout03.his.huawei.com (SkyGuard) with ESMTPS id 4dqd6k0GDmzMpPg; Tue, 13 Jan 2026 00:26:21 +0800 (CST) Received: from mail.maildlp.com (unknown [172.18.224.83]) by frasgout.his.huawei.com (SkyGuard) with ESMTPS id 4dqd926PttzJ46DD; Tue, 13 Jan 2026 00:28:22 +0800 (CST) Received: from dubpeml100005.china.huawei.com (unknown [7.214.146.113]) by mail.maildlp.com (Postfix) with ESMTPS id 8501640569; Tue, 13 Jan 2026 00:28:34 +0800 (CST) Received: from localhost (10.203.177.15) by dubpeml100005.china.huawei.com (7.214.146.113) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.36; Mon, 12 Jan 2026 16:28:33 +0000 Date: Mon, 12 Jan 2026 16:28:32 +0000 From: Jonathan Cameron To: Sascha Bischoff CC: "linux-arm-kernel@lists.infradead.org" , "kvmarm@lists.linux.dev" , "kvm@vger.kernel.org" , nd , "maz@kernel.org" , "oliver.upton@linux.dev" , Joey Gouly , Suzuki Poulose , "yuzenghui@huawei.com" , "peter.maydell@linaro.org" , "lpieralisi@kernel.org" , Timothy Hayes Subject: Re: [PATCH v3 27/36] KVM: arm64: gic-v5: Mandate architected PPI for PMU emulation on GICv5 Message-ID: <20260112162832.00005a62@huawei.com> In-Reply-To: <20260109170400.1585048-28-sascha.bischoff@arm.com> References: <20260109170400.1585048-1-sascha.bischoff@arm.com> <20260109170400.1585048-28-sascha.bischoff@arm.com> X-Mailer: Claws Mail 4.3.0 (GTK 3.24.42; x86_64-w64-mingw32) Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-ClientProxiedBy: lhrpeml500009.china.huawei.com (7.191.174.84) To dubpeml100005.china.huawei.com (7.214.146.113) On Fri, 9 Jan 2026 17:04:47 +0000 Sascha Bischoff wrote: > Make it mandatory to use the architected PPI when running a GICv5 > guest. Attempts to set anything other than the architected PPI (23) > are rejected. > > Additionally, KVM_ARM_VCPU_PMU_V3_INIT is relaxed to no longer require > KVM_ARM_VCPU_PMU_V3_IRQ to be called for GICv5-based guests. In this > case, the architectued PPI is automatically used. > > Documentation is bumped accordingly. > > Signed-off-by: Sascha Bischoff Reviewed-by: Jonathan Cameron