From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-187.mta1.migadu.com (out-187.mta1.migadu.com [95.215.58.187]) (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 75C77623 for ; Wed, 4 Dec 2024 00:39:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=95.215.58.187 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733272756; cv=none; b=imMfMLn8cUh8lwuSaeI/vz420IBypz0SCyoJ9h+lRiAg/EyO39ce5jmXjkl+jxf4cBYymDNuiLR70I36FWle64iPZsE7GChqG+HnAlfuka0KuGoc1bu7KwWcsVoZFwoY+X9qKlhCDp5lEUQFXk/NDok7GN2fxoMFl2GjZO1IVSQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733272756; c=relaxed/simple; bh=odxI3owKIjmJytS8iq98DHJyPbubrAxeu5B75aU4mcg=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version:Content-Type; b=aKX7XTPLHcmht0fcT1bKTOa2sq4U1G3obVawgzcKTS2CslxLi9c81+L5tnsSF+cn9vvenpNhKYUyYMoIJ+8tJXKHiLSkUkhT0ZOfZXtRKry4fhgQLoxeCVblhoY/ORvNSgeDIo0drg2tJRUp3ztJBZ6yw1NST6DeWSEnSQHNasE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=GF99kdzH; arc=none smtp.client-ip=95.215.58.187 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="GF99kdzH" X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1733272752; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=BuKyh758gXL4H4w1qOWYdSoyL7IX7eUQIvDf/JiLSic=; b=GF99kdzHwPOPu8J2EKxn4AZYU4VtBVBTgBSgGQpLRe4dqm0Usij0/YgeP/TwfIEWMzsIdJ okjsGMZ6swvZymbOrNECi2alxbeBxt5roZGJetiMWmQQaCbPKbqMq59LkttJDiMm7DyKXg Xrn0znXvUv8G7xPO+7hnusDvfmje/Uk= From: Oliver Upton To: linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, Marc Zyngier Cc: Oliver Upton , Joey Gouly , Suzuki K Poulose , Zenghui Yu , Catalin Marinas , stable@vger.kernel.org, Will Deacon , Mark Rutland , James Morse Subject: Re: [PATCH] KVM: arm64: Do not allow ID_AA64MMFR0_EL1.ASIDbits to be overridden Date: Tue, 3 Dec 2024 16:38:55 -0800 Message-Id: <173327270646.1289915.18344519507054696527.b4-ty@linux.dev> In-Reply-To: <20241203190236.505759-1-maz@kernel.org> References: <20241203190236.505759-1-maz@kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT On Tue, 03 Dec 2024 19:02:36 +0000, Marc Zyngier wrote: > Catalin reports that a hypervisor lying to a guest about the size > of the ASID field may result in unexpected issues: > > - if the underlying HW does only supports 8 bit ASIDs, the ASID > field in a TLBI VAE1* operation is only 8 bits, and the HW will > ignore the other 8 bits > > [...] Applied to fixes, thanks! [1/1] KVM: arm64: Do not allow ID_AA64MMFR0_EL1.ASIDbits to be overridden https://git.kernel.org/kvmarm/kvmarm/c/03c7527e97f7 -- Best, Oliver