From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id EA3AEC5AD49 for ; Mon, 9 Jun 2025 00:30:14 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 82F806B0095; Sun, 8 Jun 2025 20:30:14 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 8073C6B0096; Sun, 8 Jun 2025 20:30:14 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 6FAF66B0098; Sun, 8 Jun 2025 20:30:14 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0014.hostedemail.com [216.40.44.14]) by kanga.kvack.org (Postfix) with ESMTP id 560B86B0095 for ; Sun, 8 Jun 2025 20:30:14 -0400 (EDT) Received: from smtpin08.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay09.hostedemail.com (Postfix) with ESMTP id 07CA180180 for ; Mon, 9 Jun 2025 00:30:14 +0000 (UTC) X-FDA: 83533980348.08.02BE1B4 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by imf12.hostedemail.com (Postfix) with ESMTP id ADE5D4000E for ; Mon, 9 Jun 2025 00:30:11 +0000 (UTC) Authentication-Results: imf12.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b=e0iE2V0D; spf=pass (imf12.hostedemail.com: domain of gshan@redhat.com designates 170.10.133.124 as permitted sender) smtp.mailfrom=gshan@redhat.com; dmarc=pass (policy=quarantine) header.from=redhat.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1749429011; 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:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=zWLcc9JilgS7Cncp/Oc4IwhgNWLN/WG8IqO7PXvDI+0=; b=wdJSD1CRjXXKwdEhqbW+8Ot1MFLT8zttrsjmwVZxKZb9lR5B557/Jdo8hBCZvLdJQrDWgX ioejv9PDWbfmu+BGteNchfv/Oz1R/C1OFWeKoNE4JeIGDugiGetZS+pAvuRDFb4vQRDCCR u/xP0vNJtu7g8QyMayAkT3aSiF0niPI= ARC-Authentication-Results: i=1; imf12.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b=e0iE2V0D; spf=pass (imf12.hostedemail.com: domain of gshan@redhat.com designates 170.10.133.124 as permitted sender) smtp.mailfrom=gshan@redhat.com; dmarc=pass (policy=quarantine) header.from=redhat.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1749429011; a=rsa-sha256; cv=none; b=fLTVjR3ygMmHJXYCN5TuHSYEPvX4DtiguMvv02ZNVusYAu1OfG1/GjPGWfT/R8IPz432fS 1o0moK1X3oxqIeSU8y3LuRuesz5Gu/WZI3TDkMwGRRuO8pkLrFGFa7L4SMz03UxPXt3Jse r5uLjbqJQ0o95RuF+fSRVz+tKAhUOiw= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1749429011; 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=zWLcc9JilgS7Cncp/Oc4IwhgNWLN/WG8IqO7PXvDI+0=; b=e0iE2V0DkA2ERrfWL+gbhdSHG6H2hN47Vy5YDT4fROcoiuojc6pClN3+iRmm98t/6vcbcl myCZreCX4+kdEqxAWHK+C3C9mBHHVAVxFx2FomAtZWcEhMtdLzLpt4wtc/dwhb30umwUjq E40BcIFDjvQadjjHjB7wiAyWfC/FB+k= Received: from mail-pf1-f199.google.com (mail-pf1-f199.google.com [209.85.210.199]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-356-Xvp41QbGOr6N7dEoCrXkCQ-1; Sun, 08 Jun 2025 20:29:52 -0400 X-MC-Unique: Xvp41QbGOr6N7dEoCrXkCQ-1 X-Mimecast-MFC-AGG-ID: Xvp41QbGOr6N7dEoCrXkCQ_1749428992 Received: by mail-pf1-f199.google.com with SMTP id d2e1a72fcca58-742b6705a52so5881548b3a.1 for ; Sun, 08 Jun 2025 17:29:52 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1749428991; x=1750033791; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=zWLcc9JilgS7Cncp/Oc4IwhgNWLN/WG8IqO7PXvDI+0=; b=F+13QnrNgj7HYrOQlo15Izt64fWLIIhraEwDwXGf6tT6XkTAqph9wJXoZzKgbgO6LK eoXDqzofI6lQ2cZBTr2iHOgxee1YICg+hevh2Ydz9zbT5A16QH9iBadtDGMx3GvxfPA/ 8BzPsZzVOH9j2PqjDZZmMrTtasvQ0/IVHxjJ4K/fpZAUyuXJiDYmMDDX5pRjVCLGLdsx 7ENf0JjLSJhMLSJ9TqmqkkgTomS9wNS0sp+yH5tQjo+B60V7oIOzFtn6XG6OvNCJQUW6 lZ1wTe5ANe2nKCrD7r9UY2cdgvn/aBqWhp1KQWIdKWLARAlu+CPZvNnFH06zTmukcXe2 H/uw== X-Forwarded-Encrypted: i=1; AJvYcCUen8ZviTWZdwHJnKafADgCPrYHOhf8XEQf0Pnx7JeRBEjto2j+3/1ASNH7ads6gu4mbuaS5dzsYQ==@kvack.org X-Gm-Message-State: AOJu0YyPW3xj+tSNVwbhRO5YzJAFkClIROPIiCwnL7vcmy+qsR/KCfFp zuog3pLDe5OyZrRiEwpbcRK70aP/KnYg/2Fus8MFiM/KXi2NyiC6wFR6HTG9C1HIJ77r46SNpbw OLwylQycmQKzpy/+yKbKUjqdRAv7ulqQ7P2+44a3Tyz6mIVPPHiR7 X-Gm-Gg: ASbGncs0qSP0T02j5IyzTvWDQJg0ha/lOxnKtN7NfNRyoMekg+1OmyKxf1NsjpP5ocm ejM9askW2wbfF/W6JAsmlzddWXd/1jsBm8b2XUswsnHM5klkEWPCzA00UpIutkm/RdNGNsb3R30 wyZRVKPdTBCkmho0FOh+gxODZPjGp6nRuPZtYBhC/8Co2gjKv4qys5jItmK2E+RPI2gBjg3mBDB 585ABlrgg5cH2Dh40sBPJWeSk/pZ8mW3EolHCzdXO/2Q/K6fklDu8dn99+oOJRVNVawH+ItbYYb Z4A+utcsRgRwXvr3uB6egKvWRr9CvXoLYyvUPhhGbxnfCfXdYfM= X-Received: by 2002:a05:6a20:1595:b0:210:4397:82a5 with SMTP id adf61e73a8af0-21ee68c8a34mr16623978637.21.1749428991499; Sun, 08 Jun 2025 17:29:51 -0700 (PDT) X-Google-Smtp-Source: AGHT+IFINCLkeeM7uiQsUy2zEm0wbd522yAG1P7DJCZj34b2eGZNRzbL4+KX+dNqfXF3CZRxH1g4JA== X-Received: by 2002:a05:6a20:1595:b0:210:4397:82a5 with SMTP id adf61e73a8af0-21ee68c8a34mr16623956637.21.1749428991023; Sun, 08 Jun 2025 17:29:51 -0700 (PDT) Received: from [192.168.68.51] (n175-34-62-5.mrk21.qld.optusnet.com.au. [175.34.62.5]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-7482af7ad57sm4659019b3a.65.2025.06.08.17.29.31 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 08 Jun 2025 17:29:50 -0700 (PDT) Message-ID: Date: Mon, 9 Jun 2025 10:29:29 +1000 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v11 15/18] KVM: arm64: Enable host mapping of shared guest_memfd memory To: Fuad Tabba , kvm@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-mm@kvack.org, kvmarm@lists.linux.dev Cc: pbonzini@redhat.com, chenhuacai@kernel.org, mpe@ellerman.id.au, anup@brainfault.org, paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, seanjc@google.com, viro@zeniv.linux.org.uk, brauner@kernel.org, willy@infradead.org, akpm@linux-foundation.org, xiaoyao.li@intel.com, yilun.xu@intel.com, chao.p.peng@linux.intel.com, jarkko@kernel.org, amoorthy@google.com, dmatlack@google.com, isaku.yamahata@intel.com, mic@digikod.net, vbabka@suse.cz, vannapurve@google.com, ackerleytng@google.com, mail@maciej.szmigiero.name, david@redhat.com, michael.roth@amd.com, wei.w.wang@intel.com, liam.merwick@oracle.com, isaku.yamahata@gmail.com, kirill.shutemov@linux.intel.com, suzuki.poulose@arm.com, steven.price@arm.com, quic_eberman@quicinc.com, quic_mnalajal@quicinc.com, quic_tsoni@quicinc.com, quic_svaddagi@quicinc.com, quic_cvanscha@quicinc.com, quic_pderrin@quicinc.com, quic_pheragu@quicinc.com, catalin.marinas@arm.com, james.morse@arm.com, yuzenghui@huawei.com, oliver.upton@linux.dev, maz@kernel.org, will@kernel.org, qperret@google.com, keirf@google.com, roypat@amazon.co.uk, shuah@kernel.org, hch@infradead.org, jgg@nvidia.com, rientjes@google.com, jhubbard@nvidia.com, fvdl@google.com, hughd@google.com, jthoughton@google.com, peterx@redhat.com, pankaj.gupta@amd.com, ira.weiny@intel.com References: <20250605153800.557144-1-tabba@google.com> <20250605153800.557144-16-tabba@google.com> From: Gavin Shan In-Reply-To: <20250605153800.557144-16-tabba@google.com> X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: smh0sfRLlwwt2JZvMUoA0a88qOfo5j4FBSR3D31d4Mw_1749428992 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Queue-Id: ADE5D4000E X-Rspamd-Server: rspam09 X-Stat-Signature: d4pkqtx4xwhnjuyiurwdy6as35cmdjg7 X-HE-Tag: 1749429011-367043 X-HE-Meta: U2FsdGVkX1+u+tVNxqDIa3OWKoAfIyeYOp6XI9QFM1tVB08ltj12ocJC+kvDLIS7GXlnCC0KKJIU5onnKc8RgiS1ezYslj6d07nVkQSJ/LQy9B0GinCHJOuKTWyfsG5f0mkNPts7kOmuC2rD7D62QkEgc3pod7wdWLtkDOFrb5919KotPVY08xF3rGVOV0Y9BPsNq38N2+rY1+yjF0/Ywki6AliSe8YB9LFE4W9yNwwHsJXOGV/kMFzxw6JpjBPod8ntj+kr4W4m+npe4p4qcBRs46k+MGnz7dkdltTq8tiE63Lm0eiJiT+KcEQDTHjh1o37Oxd64zZLAotQH4XY4yB5jUdS1OepXYOha42w9Sq6fixCpwWYue9j1UJmYF7Hvv9Shs+6F7nirjvpruz9VKBRRONvU502zbTyJokZMS+HW/t6iltGUCkfc843Q8oSCDOgGsFR/fOaxBzExLsHN3CdWNMlBPKe9MH6odOz4xGrFToZfHgadc93VcpLVSQq16UgFbi+0RuersPj8op1LxnwnCAJxNU4W0kOhLQJ74Cw8weoXrSLUnNp/peBPVQyxiPjINPqQ7Su6fLzk0dbITZ4Y72xM3xUmzjjiWLI7f8/h7clkH9J+aa6Nbaujs2edyk+nJZypjCPlV38A1TzwAjWMyN8d4AUfUh/CIk9mEKGu+gPm9R+VeMDOwrSiICBJ8247Hz34q/3bn24C9qVUqh70PabMnTB9atX01waOvbZl/pO+PZytwwyw+GV+u8ORPUWB3e/TYxWAt+ObEHwnvn2WrkEtSUQHek7D69KDB7uKb7GKfvSk4xkx1vX4RD9D7/gIJeWh1MKP0oYNnajuTHuHwJ6+QkzQaVNXRUrE6LUj82rXYFE8A3uAA6yuS67yoGZCpecT9UfMpK3BeHk2zi4E3jfNPiuNCT7qrcLDRA5w57fua8jesU/M+KO/mpEgwHRhcJLmOc3baELhIp Yxm6/OAu 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, 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 6/6/25 1:37 AM, Fuad Tabba wrote: > Enable the host mapping of guest_memfd-backed memory on arm64. > > This applies to all current arm64 VM types that support guest_memfd. > Future VM types can restrict this behavior via the > kvm_arch_gmem_supports_shared_mem() hook if needed. > > Acked-by: David Hildenbrand > Signed-off-by: Fuad Tabba > --- > arch/arm64/include/asm/kvm_host.h | 5 +++++ > arch/arm64/kvm/Kconfig | 1 + > arch/arm64/kvm/mmu.c | 7 +++++++ > 3 files changed, 13 insertions(+) > Reviewed-by: Gavin Shan