From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pf1-f201.google.com (mail-pf1-f201.google.com [209.85.210.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0D4C033D50F for ; Tue, 28 Apr 2026 17:16:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777396564; cv=none; b=lzDa0tf9LM1vn3Zg2qYQIcgBO4kcvS2ypUQe6jtD03vmWTi0Ho9E4AK8CNKsf17u2JA0p8CFZaBoU7Knp23KRJUoxYYsWycnlbkyYxmMfaxJAjqZsuHjsbq/Ud1p9VaNRlfeVFcWHVXA8by1dYFpdp4DRLuld9F6dMchTCu/xJs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777396564; c=relaxed/simple; bh=1uiml0bm9m36ZN+On0jSrkItfTHXBP/nIdcfCh6AX9o=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=JzivJHJ2uOvGgWF9dOERE4EV/lDp6mn6gypALuwZV74gcppzXBwzVAw1JhgsURcvuQia771Xeg7QQy1BJksYKYP9ZQecv0qkQAF3AUJAehsnGwXzEcroG0pWQibsNlS25znyzfok2P0lkUMnlmEZisWI8by8nhFIpVcHssCzR88= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--seanjc.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=msHN2qIl; arc=none smtp.client-ip=209.85.210.201 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--seanjc.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="msHN2qIl" Received: by mail-pf1-f201.google.com with SMTP id d2e1a72fcca58-82f85179263so13671035b3a.3 for ; Tue, 28 Apr 2026 10:15:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1777396557; x=1778001357; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:from:to:cc:subject:date:message-id:reply-to; bh=oYc/5nXwDHl/2dX5VkltRQ5fFLBzkZa0o8ZgjwDLbaQ=; b=msHN2qIlpCKsYDsaW2hhGpPewfg+4/1T2ioW26bel0gMGqHrHBpumJfS34zfTFg77U ADBz17TV8fVFsvgcHavXuQvkO1a7Jfb6RWe8JNmp+cPqda6sbRjeTXBkFEN1fIRLW5cv d7wIhXT/2Z4q/TwRIi1ZLlur6CR7djDhokgn9xRAhkUy4mJL9NUNYqp8Ez+vbDtP0G0G jvdoLnh5LKi3Xyu8fpcyU9g/NnHIdv+6405U2JyTF1Jb+OjMGGAiCHcuJTMvliq4RBU/ FDtVDUIPkRHK+ifiqSaZdf0L1LWlSHIpRwGQtfnhr6+PKCuZpdyXYlimn45vouu7Ycla ObPw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1777396557; x=1778001357; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=oYc/5nXwDHl/2dX5VkltRQ5fFLBzkZa0o8ZgjwDLbaQ=; b=YGUjEBDjiEELTmSxkWu9mbmJ5IMiWwgCV1lB5pMvLTE+aJIEjbaxbwwPB/4BGUc+OR HnSWP9KudCw3vNqBTtZbYzb2qtaDLNUYzI5xVCcWrpol8XH2tvQq8VtCO8MB1SwMWCwf 2qjVwexIcvxhBww7JF0obXxmvPCprRbfD2UQu+4gRydweqziWE/VDJPhtAMRGMxDxEv3 JrASeejWJqSTFOQbjzlDNGJFtIAVCoHlX1LSG24TQRHvUkKxPTxtalFheLD6U3lcOlw2 qp5fazClZLdoPmlY/rLaiiP7wCy0ERE9KhEztxXHss47tdyRUJvySQotQzxImxxy8KNs IvIg== X-Forwarded-Encrypted: i=1; AFNElJ90jHHxFKRN6os1k8aRlyQk0MxP5vcJ0tm7TBpF2kkOfheQvMvO9Q/fZAAWRMz3YAs1eh5BTad5u2HX76o=@vger.kernel.org X-Gm-Message-State: AOJu0YzMJYogAarQWZmQqtZr81NsFlx7oHoLaamTRW9IhJzvB6utU5uW Tmrc7IdPzyoRq3F6HpJE2Lkyris5NJTnroposZpO1siXE3BIUbG9witGd+2SmKXA2nmv0mSyST7 TOwOFFw== X-Received: from pfbde15.prod.google.com ([2002:a05:6a00:468f:b0:82f:1051:621]) (user=seanjc job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6a00:408a:b0:82f:5051:f022 with SMTP id d2e1a72fcca58-834ddc2d824mr3942585b3a.32.1777396557290; Tue, 28 Apr 2026 10:15:57 -0700 (PDT) Reply-To: Sean Christopherson Date: Tue, 28 Apr 2026 10:15:38 -0700 In-Reply-To: <20260428171541.1342335-1-seanjc@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260428171541.1342335-1-seanjc@google.com> X-Mailer: git-send-email 2.54.0.545.g6539524ca2-goog Message-ID: <20260428171541.1342335-3-seanjc@google.com> Subject: [RFC PATCH 2/5] KVM: guest_memfd: Move gmem function declarations to dedicated guest_memfd.h From: Sean Christopherson To: Sean Christopherson , Paolo Bonzini Cc: David Hildenbrand , kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Yosry Ahmed , Marc Zyngier , Oliver Upton , Tianrui Zhao , Bibo Mao , Huacai Chen , Anup Patel , Christian Borntraeger , Janosch Frank , Claudio Imbrenda Content-Type: text/plain; charset="UTF-8" Extract the gmem function declarations out of kvm_mm.h and into a dedicated header, guest_memfd.h. This will allow creating a MAINTAINERS entry for guest_memfd without having to rely on content pattern matching. Signed-off-by: Sean Christopherson --- virt/kvm/guest_memfd.c | 1 + virt/kvm/guest_memfd.h | 34 ++++++++++++++++++++++++++++++++++ virt/kvm/kvm_main.c | 1 + virt/kvm/kvm_mm.h | 27 --------------------------- 4 files changed, 36 insertions(+), 27 deletions(-) create mode 100644 virt/kvm/guest_memfd.h diff --git a/virt/kvm/guest_memfd.c b/virt/kvm/guest_memfd.c index 69c9d6d546b2..a93a31568337 100644 --- a/virt/kvm/guest_memfd.c +++ b/virt/kvm/guest_memfd.c @@ -9,6 +9,7 @@ #include #include "kvm_mm.h" +#include "guest_memfd.h" static struct vfsmount *kvm_gmem_mnt; diff --git a/virt/kvm/guest_memfd.h b/virt/kvm/guest_memfd.h new file mode 100644 index 000000000000..e8b825da264b --- /dev/null +++ b/virt/kvm/guest_memfd.h @@ -0,0 +1,34 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +#ifndef __KVM_GUEST_MEMFD_H__ +#define __KVM_GUEST_MEMFD_H__ + +#include + +#ifdef CONFIG_KVM_GUEST_MEMFD +int kvm_gmem_init(struct module *module); +void kvm_gmem_exit(void); +int kvm_gmem_create(struct kvm *kvm, struct kvm_create_guest_memfd *args); +int kvm_gmem_bind(struct kvm *kvm, struct kvm_memory_slot *slot, + unsigned int fd, loff_t offset); +void kvm_gmem_unbind(struct kvm_memory_slot *slot); +#else +static inline int kvm_gmem_init(struct module *module) +{ + return 0; +} +static inline void kvm_gmem_exit(void) {}; +static inline int kvm_gmem_bind(struct kvm *kvm, + struct kvm_memory_slot *slot, + unsigned int fd, loff_t offset) +{ + WARN_ON_ONCE(1); + return -EIO; +} + +static inline void kvm_gmem_unbind(struct kvm_memory_slot *slot) +{ + WARN_ON_ONCE(1); +} +#endif /* CONFIG_KVM_GUEST_MEMFD */ + +#endif /* __KVM_GUEST_MEMFD_H__ */ diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 89489996fbc1..a4035ffb421f 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -56,6 +56,7 @@ #include "coalesced_mmio.h" #include "async_pf.h" +#include "guest_memfd.h" #include "kvm_mm.h" #include "vfio.h" diff --git a/virt/kvm/kvm_mm.h b/virt/kvm/kvm_mm.h index 9fcc5d5b7f8d..4958c0a93d64 100644 --- a/virt/kvm/kvm_mm.h +++ b/virt/kvm/kvm_mm.h @@ -67,31 +67,4 @@ static inline void gfn_to_pfn_cache_invalidate_start(struct kvm *kvm, } #endif /* HAVE_KVM_PFNCACHE */ -#ifdef CONFIG_KVM_GUEST_MEMFD -int kvm_gmem_init(struct module *module); -void kvm_gmem_exit(void); -int kvm_gmem_create(struct kvm *kvm, struct kvm_create_guest_memfd *args); -int kvm_gmem_bind(struct kvm *kvm, struct kvm_memory_slot *slot, - unsigned int fd, loff_t offset); -void kvm_gmem_unbind(struct kvm_memory_slot *slot); -#else -static inline int kvm_gmem_init(struct module *module) -{ - return 0; -} -static inline void kvm_gmem_exit(void) {}; -static inline int kvm_gmem_bind(struct kvm *kvm, - struct kvm_memory_slot *slot, - unsigned int fd, loff_t offset) -{ - WARN_ON_ONCE(1); - return -EIO; -} - -static inline void kvm_gmem_unbind(struct kvm_memory_slot *slot) -{ - WARN_ON_ONCE(1); -} -#endif /* CONFIG_KVM_GUEST_MEMFD */ - #endif /* __KVM_MM_H__ */ -- 2.54.0.545.g6539524ca2-goog