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X-CSE-ConnectionGUID: d6eUHgbkSwSoU0EMgzQsBQ== X-CSE-MsgGUID: 0E3yx6igRsS1ZbKRgkRzEQ== X-IronPort-AV: E=McAfee;i="6800,10657,11518"; a="67965355" X-IronPort-AV: E=Sophos;i="6.17,284,1747724400"; d="scan'208";a="67965355" Received: from fmviesa010.fm.intel.com ([10.60.135.150]) by fmvoesa103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Aug 2025 02:14:02 -0700 X-CSE-ConnectionGUID: wxjRK0m0SJGHwZm8ovjW8g== X-CSE-MsgGUID: DmYbdTZ1Qkq8kRQ6zTZidw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.17,284,1747724400"; d="scan'208";a="166943956" Received: from dhhellew-desk2.ger.corp.intel.com (HELO localhost) ([10.245.246.8]) by fmviesa010-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Aug 2025 02:13:33 -0700 Date: Tue, 12 Aug 2025 12:13:26 +0300 From: Tony Lindgren To: Ackerley Tng Cc: kvm@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, x86@kernel.org, linux-fsdevel@vger.kernel.org, aik@amd.com, ajones@ventanamicro.com, akpm@linux-foundation.org, amoorthy@google.com, anthony.yznaga@oracle.com, anup@brainfault.org, aou@eecs.berkeley.edu, bfoster@redhat.com, binbin.wu@linux.intel.com, brauner@kernel.org, catalin.marinas@arm.com, chao.p.peng@intel.com, chenhuacai@kernel.org, dave.hansen@intel.com, david@redhat.com, dmatlack@google.com, dwmw@amazon.co.uk, erdemaktas@google.com, fan.du@intel.com, fvdl@google.com, graf@amazon.com, haibo1.xu@intel.com, hch@infradead.org, hughd@google.com, ira.weiny@intel.com, isaku.yamahata@intel.com, jack@suse.cz, james.morse@arm.com, jarkko@kernel.org, jgg@ziepe.ca, jgowans@amazon.com, jhubbard@nvidia.com, jroedel@suse.de, jthoughton@google.com, jun.miao@intel.com, kai.huang@intel.com, keirf@google.com, kent.overstreet@linux.dev, kirill.shutemov@intel.com, liam.merwick@oracle.com, maciej.wieczor-retman@intel.com, mail@maciej.szmigiero.name, maz@kernel.org, mic@digikod.net, michael.roth@amd.com, mpe@ellerman.id.au, muchun.song@linux.dev, nikunj@amd.com, nsaenz@amazon.es, oliver.upton@linux.dev, palmer@dabbelt.com, pankaj.gupta@amd.com, paul.walmsley@sifive.com, pbonzini@redhat.com, pdurrant@amazon.co.uk, peterx@redhat.com, pgonda@google.com, pvorel@suse.cz, qperret@google.com, quic_cvanscha@quicinc.com, quic_eberman@quicinc.com, quic_mnalajal@quicinc.com, quic_pderrin@quicinc.com, quic_pheragu@quicinc.com, quic_svaddagi@quicinc.com, quic_tsoni@quicinc.com, richard.weiyang@gmail.com, rick.p.edgecombe@intel.com, rientjes@google.com, roypat@amazon.co.uk, rppt@kernel.org, seanjc@google.com, shuah@kernel.org, steven.price@arm.com, steven.sistare@oracle.com, suzuki.poulose@arm.com, tabba@google.com, thomas.lendacky@amd.com, usama.arif@bytedance.com, vannapurve@google.com, vbabka@suse.cz, viro@zeniv.linux.org.uk, vkuznets@redhat.com, wei.w.wang@intel.com, will@kernel.org, willy@infradead.org, xiaoyao.li@intel.com, yan.y.zhao@intel.com, yilun.xu@intel.com, yuzenghui@huawei.com, zhiquan1.li@intel.com Subject: Re: [RFC PATCH v2 32/51] KVM: guest_memfd: Support guestmem_hugetlb as custom allocator Message-ID: References: <4d16522293c9a3eacdbe30148b6d6c8ad2eb5908.1747264138.git.ackerleytng@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4d16522293c9a3eacdbe30148b6d6c8ad2eb5908.1747264138.git.ackerleytng@google.com> X-Rspamd-Queue-Id: D67D3C0008 X-Rspamd-Server: rspam04 X-Rspam-User: X-Stat-Signature: xf1q571wmwbw781qse6aw3gfgqugduww X-HE-Tag: 1754990043-559000 X-HE-Meta: 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 OsprtffJ A81iu+ptxntR6f85/YgJWw64LH2WOedLtvSaYLvf/iugyE6hAnc0Dv3TF8luHsK/ZoORRUFaFZnYrdOSc8Wd6mDInnF7MaIynYxLHpm8VzqHcXukH0v2iMdc8PrBix/nZDMmqfj0nQUUopmwlhF/WVczCHoySj9VtSHhM+sJkTeFJku3x+3yaY+kdi6K9OOXzHPBJCJGP628c226I4lSjtEuy161IgvqciEOJrn0IVd56b4b/4qIxZ6TxJECO+njXJyOT+Ao9fF7+poas6dyg4VLQUWjAUVxZPHDSroUxAHLF3rY= 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: Hi, On Wed, May 14, 2025 at 04:42:11PM -0700, Ackerley Tng wrote: > --- a/virt/kvm/Kconfig > +++ b/virt/kvm/Kconfig > @@ -133,3 +133,8 @@ config KVM_GMEM_SHARED_MEM > select KVM_GMEM > bool > prompt "Enables in-place shared memory for guest_memfd" > + > +config KVM_GMEM_HUGETLB > + select KVM_PRIVATE_MEM > + depends on GUESTMEM_HUGETLB > + bool "Enables using a custom allocator with guest_memfd, see CONFIG_GUESTMEM_HUGETLB" For v3, this needs s/KVM_PRIVATE_MEM/KVM_GMEM/ assuming the patches are based on "KVM: Rename CONFIG_KVM_PRIVATE_MEM to CONFIG_KVM_GMEM". Also probably good idea to run some make randconfig builds on the series to check the various Kconfig changes and inline functions for build errors. Regards, Tony