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a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1733846887; h=from:from:sender: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: in-reply-to:in-reply-to:references:references; bh=UhGwtCZQPUWo8JC928lQsGKK4ZTYsXyCnf30A3VDezM=; b=1G76LZQSAHAkhgLa03N61yDBtXmD4UXoQDk+kOhkzCCLScU0DsysOkArIb+nBbTBGBNjrr +67HQJVFM/SdGIrd4gECTJaSK+8z1hwhwyf0eQf4Vk9xN6Nt53JeuTnGTTLctluD01lTVI HSPLQSi36zkESAmbF0O293JudjF+T+U= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 060F95C481A; Tue, 10 Dec 2024 16:07:34 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C2401C4CED6; Tue, 10 Dec 2024 16:08:09 +0000 (UTC) Date: Tue, 10 Dec 2024 16:08:07 +0000 From: Catalin Marinas To: Donald Dutile Cc: Jason Gunthorpe , Will Deacon , ankita@nvidia.com, maz@kernel.org, oliver.upton@linux.dev, joey.gouly@arm.com, suzuki.poulose@arm.com, yuzenghui@huawei.com, ryan.roberts@arm.com, shahuang@redhat.com, lpieralisi@kernel.org, aniketa@nvidia.com, cjia@nvidia.com, kwankhede@nvidia.com, targupta@nvidia.com, vsethi@nvidia.com, acurrid@nvidia.com, apopple@nvidia.com, jhubbard@nvidia.com, danw@nvidia.com, zhiw@nvidia.com, mochs@nvidia.com, udhoke@nvidia.com, dnigam@nvidia.com, alex.williamson@redhat.com, sebastianene@google.com, coltonlewis@google.com, kevin.tian@intel.com, yi.l.liu@intel.com, ardb@kernel.org, akpm@linux-foundation.org, gshan@redhat.com, linux-mm@kvack.org, kvmarm@lists.linux.dev, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH v2 0/1] KVM: arm64: Map GPU memory with no struct pages Message-ID: References: <20241118131958.4609-1-ankita@nvidia.com> <20241210140739.GC15607@willie-the-truck> <20241210141806.GI2347147@nvidia.com> <0723d890-1f90-463b-a814-9f7bb7e2200b@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <0723d890-1f90-463b-a814-9f7bb7e2200b@redhat.com> X-Rspam-User: X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: 0662C180039 X-Stat-Signature: wtbumu6mns6dn5xgp8m6dn7jdyrkat15 X-HE-Tag: 1733846881-768207 X-HE-Meta: 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 bueMQqmd TjprX1n7gSSbN4YRfy1ooWTA7f8Xr3lYbWrjUwZDnAoE2159/G5iSpMl+CmZkSzipEDnevDQzrGEVctnM1oUvBkGsi0Z2s83OEZWRJ1GhxCEMjNlm+bQMFq3YUnETUxUkWac4pEmxiHWqaCETxNwbM9/mWPnPiyBm7PNSDd64RHFKSXq4rbw0f2D0bbNGY4y33rJtIojRzO+agrUKZfgX4eKQ+29xhATTvWEjCrwVL1cdDycLrwkJqd9R2zWptgV3eCbAZoVg/QYg/cTW0oclgFb+jYmZ0VHe+79x9K1EQ6krpltXqRKkL/KdZYvxQBamktIWRpPlUGPfIxzI3ixXCavaU/VDPDG6rn3y+JxhC0/as5aO+IyCQgOYxw== X-Bogosity: Ham, tests=bogofilter, spamicity=0.001086, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Tue, Dec 10, 2024 at 10:56:43AM -0500, Donald Dutile wrote: > So, I'm not sure I read what is needed to resolve this patch. I read > Will's reply to split it further and basically along what logical > lines of functionality; is there still an MTE complexity that has to > be resolved/included in the series? Since MTE is still around, the complexity did not go away. But I need to properly read the patch and Will's comment and page in the whole discussion from last year. There's now FEAT_MTE_PERM as well but we don't have those patches in yet: https://lore.kernel.org/r/20241028094014.2596619-1-aneesh.kumar@kernel.org/ -- Catalin