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]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 828DAD33995 for ; Fri, 5 Dec 2025 16:58:43 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 5E15D6B000D; Fri, 5 Dec 2025 11:58:41 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 565546B0023; Fri, 5 Dec 2025 11:58:41 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 390AB6B0012; Fri, 5 Dec 2025 11:58:41 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0010.hostedemail.com [216.40.44.10]) by kanga.kvack.org (Postfix) with ESMTP id 1DE626B0011 for ; Fri, 5 Dec 2025 11:58:41 -0500 (EST) Received: from smtpin17.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay08.hostedemail.com (Postfix) with ESMTP id B62A2140282 for ; Fri, 5 Dec 2025 16:58:40 +0000 (UTC) X-FDA: 84186026400.17.16FB958 Received: from fra-out-002.esa.eu-central-1.outbound.mail-perimeter.amazon.com (fra-out-002.esa.eu-central-1.outbound.mail-perimeter.amazon.com [3.65.3.180]) by imf20.hostedemail.com (Postfix) with ESMTP id 3735D1C001D for ; Fri, 5 Dec 2025 16:58:38 +0000 (UTC) Authentication-Results: imf20.hostedemail.com; dkim=pass header.d=amazon.co.uk header.s=amazoncorp2 header.b=naju05ZQ; spf=pass (imf20.hostedemail.com: domain of "prvs=42773fd06=kalyazin@amazon.co.uk" designates 3.65.3.180 as permitted sender) smtp.mailfrom="prvs=42773fd06=kalyazin@amazon.co.uk"; dmarc=pass (policy=quarantine) header.from=amazon.co.uk ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1764953918; 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=EkhXi5kdHmtd1AcwEg7Y2Ijcajvi2mTnsK0V4nCbHJg=; b=HihX/UiHefc1oo90HJg9c+j4/wJd6hL/bbCMcUKAvnBk1u18vhHztqPKazOlWTEg3dc78O bogdqk4XWaV87ZBC335Z13UmrRfN8lykBwj3WioT/tVLCU0AFt1QExroaicXdmEPK/AJDB 9uEAAy0DjyLXkr38Co8TeJiR0D5PjHI= ARC-Authentication-Results: i=1; imf20.hostedemail.com; dkim=pass header.d=amazon.co.uk header.s=amazoncorp2 header.b=naju05ZQ; spf=pass (imf20.hostedemail.com: domain of "prvs=42773fd06=kalyazin@amazon.co.uk" designates 3.65.3.180 as permitted sender) smtp.mailfrom="prvs=42773fd06=kalyazin@amazon.co.uk"; dmarc=pass (policy=quarantine) header.from=amazon.co.uk ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1764953918; a=rsa-sha256; cv=none; b=d+Y2bg7mp5S4paYLtvZUcMSWzPUtw/VDClZ2DlS2q/P7DSPHdRzaMhprrG+vPIeiFvjs47 ENtg5FxRxPBlHkPaU6U70ne18wEk+zOmi5rHfhC/3aGnMYMhrE/j+kx4LYdiiY2MY9cJ/R Wtxl/UnAsDrxq4ORQgZss7R/FkcWyIs= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.co.uk; i=@amazon.co.uk; q=dns/txt; s=amazoncorp2; t=1764953918; x=1796489918; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-transfer-encoding:mime-version; bh=EkhXi5kdHmtd1AcwEg7Y2Ijcajvi2mTnsK0V4nCbHJg=; b=naju05ZQbOqI1nd84N9E2MGo9mnx1NjTsZr08TpeL2S+wtk3qIbjMnLt Khsh3/GhdzwhMx7/YR7aCCOt7ygSMbFR8a+YnMczpBxhCcU8QvvlbnTPU pP6Z70hcxAan1PYrg6bDmivj3VWfwnAlaWbsXez+i3ebVJ7OIGC8YpPqe JLjO/bp7t9vU7MbdjIpxymFW2nzqKpBpkZjzqzz21UObqg5yj2B5z8kiN LKFEYkRxV29PJXZirwu2Muwx6JBkbDuK5Wc3/triY8LDoiRQAvnX7DZv5 o1n+P/pGXsFfxfWO1HaQ+70LPjymBNHYJ02DlVJUkLn2tiCtA+XG+USvr A==; X-CSE-ConnectionGUID: Y1gfsvFBTC+sTxrM0g1LzQ== X-CSE-MsgGUID: /iob45L3Ra68xjbcCTFGDA== X-IronPort-AV: E=Sophos;i="6.20,252,1758585600"; d="scan'208";a="6306253" Received: from ip-10-6-6-97.eu-central-1.compute.internal (HELO smtpout.naws.eu-central-1.prod.farcaster.email.amazon.dev) ([10.6.6.97]) by internal-fra-out-002.esa.eu-central-1.outbound.mail-perimeter.amazon.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Dec 2025 16:58:36 +0000 Received: from EX19MTAEUA001.ant.amazon.com [54.240.197.233:30659] by smtpin.naws.eu-central-1.prod.farcaster.email.amazon.dev [10.0.6.214:2525] with esmtp (Farcaster) id 003a5827-a72c-426f-be78-9e2d9b40bfe8; Fri, 5 Dec 2025 16:58:36 +0000 (UTC) X-Farcaster-Flow-ID: 003a5827-a72c-426f-be78-9e2d9b40bfe8 Received: from EX19D005EUB002.ant.amazon.com (10.252.51.103) by EX19MTAEUA001.ant.amazon.com (10.252.50.223) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA) id 15.2.2562.29; Fri, 5 Dec 2025 16:58:32 +0000 Received: from EX19D005EUB003.ant.amazon.com (10.252.51.31) by EX19D005EUB002.ant.amazon.com (10.252.51.103) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA) id 15.2.2562.29; Fri, 5 Dec 2025 16:58:31 +0000 Received: from EX19D005EUB003.ant.amazon.com ([fe80::b825:becb:4b38:da0c]) by EX19D005EUB003.ant.amazon.com ([fe80::b825:becb:4b38:da0c%3]) with mapi id 15.02.2562.029; Fri, 5 Dec 2025 16:58:31 +0000 From: "Kalyazin, Nikita" To: "kvm@vger.kernel.org" , "linux-doc@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "kvmarm@lists.linux.dev" , "linux-fsdevel@vger.kernel.org" , "linux-mm@kvack.org" , "bpf@vger.kernel.org" , "linux-kselftest@vger.kernel.org" CC: "pbonzini@redhat.com" , "corbet@lwn.net" , "maz@kernel.org" , "oupton@kernel.org" , "joey.gouly@arm.com" , "suzuki.poulose@arm.com" , "yuzenghui@huawei.com" , "catalin.marinas@arm.com" , "will@kernel.org" , "seanjc@google.com" , "tglx@linutronix.de" , "mingo@redhat.com" , "bp@alien8.de" , "dave.hansen@linux.intel.com" , "x86@kernel.org" , "hpa@zytor.com" , "luto@kernel.org" , "peterz@infradead.org" , "willy@infradead.org" , "akpm@linux-foundation.org" , "david@kernel.org" , "lorenzo.stoakes@oracle.com" , "Liam.Howlett@oracle.com" , "vbabka@suse.cz" , "rppt@kernel.org" , "surenb@google.com" , "mhocko@suse.com" , "ast@kernel.org" , "daniel@iogearbox.net" , "andrii@kernel.org" , "martin.lau@linux.dev" , "eddyz87@gmail.com" , "song@kernel.org" , "yonghong.song@linux.dev" , "john.fastabend@gmail.com" , "kpsingh@kernel.org" , "sdf@fomichev.me" , "haoluo@google.com" , "jolsa@kernel.org" , "jgg@ziepe.ca" , "jhubbard@nvidia.com" , "peterx@redhat.com" , "jannh@google.com" , "pfalcato@suse.de" , "shuah@kernel.org" , "riel@surriel.com" , "baohua@kernel.org" , "ryan.roberts@arm.com" , "jgross@suse.com" , "yu-cheng.yu@intel.com" , "kas@kernel.org" , "coxu@redhat.com" , "kevin.brodsky@arm.com" , "ackerleytng@google.com" , "maobibo@loongson.cn" , "prsampat@amd.com" , "mlevitsk@redhat.com" , "isaku.yamahata@intel.com" , "jmattson@google.com" , "jthoughton@google.com" , "linux-arm-kernel@lists.infradead.org" , "vannapurve@google.com" , "jackmanb@google.com" , "aneesh.kumar@kernel.org" , "patrick.roy@linux.dev" , "Thomson, Jack" , "Itazuri, Takahiro" , "Manwaring, Derek" , "Cali, Marco" , "Kalyazin, Nikita" Subject: [PATCH v8 04/13] KVM: guest_memfd: Add stub for kvm_arch_gmem_invalidate Thread-Topic: [PATCH v8 04/13] KVM: guest_memfd: Add stub for kvm_arch_gmem_invalidate Thread-Index: AQHcZghi3A+Ke3NY2kGcY3fh9aT3hA== Date: Fri, 5 Dec 2025 16:58:31 +0000 Message-ID: <20251205165743.9341-5-kalyazin@amazon.com> References: <20251205165743.9341-1-kalyazin@amazon.com> In-Reply-To: <20251205165743.9341-1-kalyazin@amazon.com> Accept-Language: en-GB, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [172.19.103.116] Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: 3735D1C001D X-Stat-Signature: z67o8kcntae9j1a1yprckckeqri5pzc3 X-Rspam-User: X-HE-Tag: 1764953918-548350 X-HE-Meta: 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 xCYFjzOb 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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: From: Patrick Roy =0A= =0A= Add a no-op stub for kvm_arch_gmem_invalidate if=0A= CONFIG_HAVE_KVM_ARCH_GMEM_INVALIDATE=3Dn. This allows defining=0A= kvm_gmem_free_folio without ifdef-ery, which allows more cleanly using=0A= guest_memfd's free_folio callback for non-arch-invalidation related=0A= code.=0A= =0A= Acked-by: David Hildenbrand (Red Hat)" =0A= Signed-off-by: Nikita Kalyazin =0A= ---=0A= include/linux/kvm_host.h | 2 ++=0A= virt/kvm/guest_memfd.c | 4 ----=0A= 2 files changed, 2 insertions(+), 4 deletions(-)=0A= =0A= diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h=0A= index d93f75b05ae2..27796a09d29b 100644=0A= --- a/include/linux/kvm_host.h=0A= +++ b/include/linux/kvm_host.h=0A= @@ -2589,6 +2589,8 @@ long kvm_gmem_populate(struct kvm *kvm, gfn_t gfn, vo= id __user *src, long npages=0A= =0A= #ifdef CONFIG_HAVE_KVM_ARCH_GMEM_INVALIDATE=0A= void kvm_arch_gmem_invalidate(kvm_pfn_t start, kvm_pfn_t end);=0A= +#else=0A= +static inline void kvm_arch_gmem_invalidate(kvm_pfn_t start, kvm_pfn_t end= ) { }=0A= #endif=0A= =0A= #ifdef CONFIG_KVM_GENERIC_PRE_FAULT_MEMORY=0A= diff --git a/virt/kvm/guest_memfd.c b/virt/kvm/guest_memfd.c=0A= index fdaea3422c30..92e7f8c1f303 100644=0A= --- a/virt/kvm/guest_memfd.c=0A= +++ b/virt/kvm/guest_memfd.c=0A= @@ -527,7 +527,6 @@ static int kvm_gmem_error_folio(struct address_space *m= apping, struct folio *fol=0A= return MF_DELAYED;=0A= }=0A= =0A= -#ifdef CONFIG_HAVE_KVM_ARCH_GMEM_INVALIDATE=0A= static void kvm_gmem_free_folio(struct folio *folio)=0A= {=0A= struct page *page =3D folio_page(folio, 0);=0A= @@ -536,15 +535,12 @@ static void kvm_gmem_free_folio(struct folio *folio)= =0A= =0A= kvm_arch_gmem_invalidate(pfn, pfn + (1ul << order));=0A= }=0A= -#endif=0A= =0A= static const struct address_space_operations kvm_gmem_aops =3D {=0A= .dirty_folio =3D noop_dirty_folio,=0A= .migrate_folio =3D kvm_gmem_migrate_folio,=0A= .error_remove_folio =3D kvm_gmem_error_folio,=0A= -#ifdef CONFIG_HAVE_KVM_ARCH_GMEM_INVALIDATE=0A= .free_folio =3D kvm_gmem_free_folio,=0A= -#endif=0A= };=0A= =0A= static int kvm_gmem_setattr(struct mnt_idmap *idmap, struct dentry *dentry= ,=0A= -- =0A= 2.50.1=0A= =0A=