From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 82C50211C; Sun, 9 Mar 2025 18:24:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741544685; cv=none; b=kBMDAfbq8W/8yWTMFAN7R8m7fKyLNl+8RMfa4RRtFB6SWBotLkonKdPdXjkQ9fwVWISWD5hjva/n7O43w0QNu5xDorXWOANDvfjbk+yztf3JSLKGRjReAQTs5AG5SrGo04UrnaBEsP+sPT9Zk+eOEA5f069orXBCJgsFHG1iKRw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741544685; c=relaxed/simple; bh=xqmbU01GvdRaqLnnBBBn3XWRf5tpVBKdGgOv8hcAq4I=; h=Date:Message-ID:From:To:Cc:Subject:In-Reply-To:References: MIME-Version:Content-Type; b=himhBry343npvibQEsEb88tzzHVqzIXWxcemMgyugNajqu2oeUIb6X1okIlqrLQL+lZ+CDAg9Nbq31oQn8mQyVRBLLUjI0I4cPFv244cGsG0uHDYcanIIriVmebFQZn/AY7uZTJg4F8TdhPJbKRi91pZWy/5RSbTcI+83u5I6A4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=TuxO7sln; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="TuxO7sln" Received: by smtp.kernel.org (Postfix) with ESMTPSA id EC2FCC4CEE3; Sun, 9 Mar 2025 18:24:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1741544685; bh=xqmbU01GvdRaqLnnBBBn3XWRf5tpVBKdGgOv8hcAq4I=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=TuxO7slnvPm42OZE3We1kr9s6YsqJXcntDBJM4sjjHr1gJZU6KOwvqWRKv5mrj1Da 191Zb644if4IMPc5rLlMjMd2+ykoEiY2ok19kR26i4AuWOmnDnDs3n7AnEn8C/N8oH F0TeLtOqy5mZ8NdP61zJAIie/uGQ+0pjgbeec7yzrTYcH/4LBk7xtPtTa8dOtHqoCG DGVBl/1g7P2HCe90jeRPsYZfnBaItg+j5GuQwIeViKkQnwcs4zIo2TbAtWDuvZYuv6 eFGt0y+qLjKb2zs+RcY4ovh++NeyMy6aOl04C1WiDbgZ97FUsNX+1RFUOLp6VUv4rC ALlRemASiI7pg== Received: from sofa.misterjones.org ([185.219.108.64] helo=goblin-girl.misterjones.org) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1trLKM-00Bxrp-9T; Sun, 09 Mar 2025 18:24:42 +0000 Date: Sun, 09 Mar 2025 18:24:40 +0000 Message-ID: <868qpeoydz.wl-maz@kernel.org> From: Marc Zyngier To: Sebastian Ott Cc: Oliver Upton , Joey Gouly , Suzuki K Poulose , Zenghui Yu , Catalin Marinas , Will Deacon , linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, linux-kernel@vger.kernel.org Subject: Re: [PATCH] KVM: arm64: Writable TGRAN*_2 In-Reply-To: <20250306184013.30008-1-sebott@redhat.com> References: <20250306184013.30008-1-sebott@redhat.com> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM-LB/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL-LB/10.8 EasyPG/1.0.0 Emacs/29.4 (aarch64-unknown-linux-gnu) MULE/6.0 (HANACHIRUSATO) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: sebott@redhat.com, oliver.upton@linux.dev, joey.gouly@arm.com, suzuki.poulose@arm.com, yuzenghui@huawei.com, catalin.marinas@arm.com, will@kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, linux-kernel@vger.kernel.org X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false On Thu, 06 Mar 2025 18:40:13 +0000, Sebastian Ott wrote: > > Allow userspace to write the safe (NI) value for ID_AA64MMFR0_EL1.TGRAN*_2. > Disallow to change these fields for NV since kvm provides a sanitized view > for them based on the PAGE_SIZE. > Also add these bits to the set_id_regs selftest. > > Signed-off-by: Sebastian Ott Acked-by: Marc Zyngier M. -- Without deviation from the norm, progress is not possible.