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 A9833C83F1D for ; Tue, 15 Jul 2025 09:33:58 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 0AD6E6B008A; Tue, 15 Jul 2025 05:33:58 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 0862F6B0092; Tue, 15 Jul 2025 05:33:58 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id EB5896B0093; Tue, 15 Jul 2025 05:33:57 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) by kanga.kvack.org (Postfix) with ESMTP id DA9896B008A for ; Tue, 15 Jul 2025 05:33:57 -0400 (EDT) Received: from smtpin03.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay05.hostedemail.com (Postfix) with ESMTP id 811A058773 for ; Tue, 15 Jul 2025 09:33:57 +0000 (UTC) X-FDA: 83665987314.03.83A0238 Received: from mail-wm1-f73.google.com (mail-wm1-f73.google.com [209.85.128.73]) by imf02.hostedemail.com (Postfix) with ESMTP id B01988000C for ; Tue, 15 Jul 2025 09:33:55 +0000 (UTC) Authentication-Results: imf02.hostedemail.com; dkim=pass header.d=google.com header.s=20230601 header.b=Qq59AdhP; spf=pass (imf02.hostedemail.com: domain of 3gSB2aAUKCOQZGHHGMUUMRK.IUSROTad-SSQbGIQ.UXM@flex--tabba.bounces.google.com designates 209.85.128.73 as permitted sender) smtp.mailfrom=3gSB2aAUKCOQZGHHGMUUMRK.IUSROTad-SSQbGIQ.UXM@flex--tabba.bounces.google.com; dmarc=pass (policy=reject) header.from=google.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1752572035; 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:dkim-signature; bh=FMDe69ums+Me3fBTEijA4dR71l9fl1NczPIoVNl9/IU=; b=wwPEh1To+ERsK/CeNQILz6pOySXEi8Ijw3kckz8Dd8vOk+OrDjr1PqXYAcQbhh3vWwakB2 9OEFQ6TK8HawlpMOeQCylqUFLTXj9I5l3hajHECnGZB7zqYElXT3F8KfDrV5KMxkdicRE7 mrjLeUaZ1F5BpcEnqts63CjUvVZWI70= ARC-Authentication-Results: i=1; imf02.hostedemail.com; dkim=pass header.d=google.com header.s=20230601 header.b=Qq59AdhP; spf=pass (imf02.hostedemail.com: domain of 3gSB2aAUKCOQZGHHGMUUMRK.IUSROTad-SSQbGIQ.UXM@flex--tabba.bounces.google.com designates 209.85.128.73 as permitted sender) smtp.mailfrom=3gSB2aAUKCOQZGHHGMUUMRK.IUSROTad-SSQbGIQ.UXM@flex--tabba.bounces.google.com; dmarc=pass (policy=reject) header.from=google.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1752572035; a=rsa-sha256; cv=none; b=V90nLBDe10FWxyQOlZ70Q2yWP3EkExC0Kvi2Pnp6rADOiBcITslwVXmO4ZMlbAx6rUcKXp dlpGfVPA4knEz7UCGAUdrAMojP6wwRSwt4eUTO1mZoKaU2+34NRZ2dKpKpmn11acHev0SC CIAhL/nl6PfFfFf3S2O2B3vVpaFGEW0= Received: by mail-wm1-f73.google.com with SMTP id 5b1f17b1804b1-451ac1b43c4so29004065e9.0 for ; Tue, 15 Jul 2025 02:33:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1752572034; x=1753176834; darn=kvack.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=FMDe69ums+Me3fBTEijA4dR71l9fl1NczPIoVNl9/IU=; b=Qq59AdhPT0XlQQqQnJCgLWnaw7Au6UFqx5HPfzWURjZh0fIoaIjtta9YtBHhaqGYgD HJbILdGz6qPnCmrh8uFYNLm0Ijorr8lzcm+mondyRWU6TeJ6hjcO2Khf6BpThpU1BmzE XFtlRir01NLe1K0hccOCEsD4ka1a0ylaKtozmmGqfQ3x3Vc6qvW+KDZMTUm5JGGyt9HM Cn9jXEUqV2pA6PToG9iglLTf3NFsSaH9uEA26sM+m2BckXPPS69JBgWKKaEb/bad0JVU cpeYxmeYitFgheGnLX0ecfOncHwwZa3HrZ/xXj4XCei+TdVfJTFD0imPGio5fPCtupHl xAWw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1752572034; x=1753176834; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=FMDe69ums+Me3fBTEijA4dR71l9fl1NczPIoVNl9/IU=; b=YTOyT8icIkZ/e/yxixNeuTy0BmgrRAl5n0mdZdmI3FJkk6R9RjotWr8Y05BDuzoUMz 7BMDfV0eDna1WErlznUSa7Bw2Wujhq7cUaSA0Y73eDqrFmseJoGVcXhwowy2UzjYftpL 7NwChxUY2fyh7S+8fDTrWkPOY+EfH3EC0q6zMUlfrLcH3fXJkO6tglt7wOZ2HCbee4MC r8/bGThN0Q0sEfea+CiJg+W29GImJfAkRy1FNSz8hxC5whXVEy4hV9VMSXkYiCUIOZQM X/mlMFv3yVGn3I+cxDnhLcUY777pu0DmGvL5u2y0BD2gvINBL0veA4wZqOJP2JxOPXbW 5O8w== X-Forwarded-Encrypted: i=1; AJvYcCVO3l/GrqNSP5KXq/Cfv+HwGuDvDLEMQMLa9nmytiQYuEArG3o5jnW75w7AsOmWroE+ci6ZkarJ6Q==@kvack.org X-Gm-Message-State: AOJu0Yx8OpaWdtthc+xosj4/UfWGuelCCi7tJ+k9WeeSgQKt0xeGzF0z rhr2qwbdECpdSJuih/OuYcDSt89tZM9zuUPQshpT4YMSorFjCFFmgtafU004wDml56w3eWh9pSU 4Mw== X-Google-Smtp-Source: AGHT+IEaNlmuUZSvqdz1Ni/jZnF37ezMCkvPpbF7q8lKoosqNcNFytCQU5+HKoRGWfRcydwhyHdfDwV1SA== X-Received: from wmsr9.prod.google.com ([2002:a05:600c:8b09:b0:456:d19:9bcb]) (user=tabba job=prod-delivery.src-stubby-dispatcher) by 2002:a05:600c:46cb:b0:456:1d4e:c14f with SMTP id 5b1f17b1804b1-4561d4ec438mr54320505e9.28.1752572033848; Tue, 15 Jul 2025 02:33:53 -0700 (PDT) Date: Tue, 15 Jul 2025 10:33:30 +0100 In-Reply-To: <20250715093350.2584932-1-tabba@google.com> Mime-Version: 1.0 References: <20250715093350.2584932-1-tabba@google.com> X-Mailer: git-send-email 2.50.0.727.gbf7dc18ff4-goog Message-ID: <20250715093350.2584932-2-tabba@google.com> Subject: [PATCH v14 01/21] KVM: Rename CONFIG_KVM_PRIVATE_MEM to CONFIG_KVM_GMEM From: Fuad Tabba To: 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, tabba@google.com Content-Type: text/plain; charset="UTF-8" X-Stat-Signature: e157i6wqqk9iwogmq3h9jydwyukgwrmr X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: B01988000C X-Rspam-User: X-HE-Tag: 1752572035-11966 X-HE-Meta: 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 HEbcmrDS 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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: Rename the Kconfig option CONFIG_KVM_PRIVATE_MEM to CONFIG_KVM_GMEM. The original name implied that the feature only supported "private" memory. However, CONFIG_KVM_PRIVATE_MEM enables guest_memfd in general, which is not exclusively for private memory. Subsequent patches in this series will add guest_memfd support for non-CoCo VMs, whose memory is not private. Renaming the Kconfig option to CONFIG_KVM_GMEM more accurately reflects its broader scope as the main Kconfig option for all guest_memfd-backed memory. This provides clearer semantics for the option and avoids confusion as new features are introduced. Reviewed-by: Ira Weiny Reviewed-by: Gavin Shan Reviewed-by: Shivank Garg Reviewed-by: Vlastimil Babka Co-developed-by: David Hildenbrand Signed-off-by: David Hildenbrand Signed-off-by: Fuad Tabba --- arch/x86/include/asm/kvm_host.h | 2 +- include/linux/kvm_host.h | 14 +++++++------- virt/kvm/Kconfig | 8 ++++---- virt/kvm/Makefile.kvm | 2 +- virt/kvm/kvm_main.c | 4 ++-- virt/kvm/kvm_mm.h | 4 ++-- 6 files changed, 17 insertions(+), 17 deletions(-) diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index f7af967aa16f..acb25f935d84 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -2275,7 +2275,7 @@ void kvm_configure_mmu(bool enable_tdp, int tdp_forced_root_level, int tdp_max_root_level, int tdp_huge_page_level); -#ifdef CONFIG_KVM_PRIVATE_MEM +#ifdef CONFIG_KVM_GMEM #define kvm_arch_has_private_mem(kvm) ((kvm)->arch.has_private_mem) #else #define kvm_arch_has_private_mem(kvm) false diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 3bde4fb5c6aa..755b09dcafce 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -601,7 +601,7 @@ struct kvm_memory_slot { short id; u16 as_id; -#ifdef CONFIG_KVM_PRIVATE_MEM +#ifdef CONFIG_KVM_GMEM struct { /* * Writes protected by kvm->slots_lock. Acquiring a @@ -719,10 +719,10 @@ static inline int kvm_arch_vcpu_memslots_id(struct kvm_vcpu *vcpu) #endif /* - * Arch code must define kvm_arch_has_private_mem if support for private memory - * is enabled. + * Arch code must define kvm_arch_has_private_mem if support for guest_memfd is + * enabled. */ -#if !defined(kvm_arch_has_private_mem) && !IS_ENABLED(CONFIG_KVM_PRIVATE_MEM) +#if !defined(kvm_arch_has_private_mem) && !IS_ENABLED(CONFIG_KVM_GMEM) static inline bool kvm_arch_has_private_mem(struct kvm *kvm) { return false; @@ -2527,7 +2527,7 @@ bool kvm_arch_post_set_memory_attributes(struct kvm *kvm, static inline bool kvm_mem_is_private(struct kvm *kvm, gfn_t gfn) { - return IS_ENABLED(CONFIG_KVM_PRIVATE_MEM) && + return IS_ENABLED(CONFIG_KVM_GMEM) && kvm_get_memory_attributes(kvm, gfn) & KVM_MEMORY_ATTRIBUTE_PRIVATE; } #else @@ -2537,7 +2537,7 @@ static inline bool kvm_mem_is_private(struct kvm *kvm, gfn_t gfn) } #endif /* CONFIG_KVM_GENERIC_MEMORY_ATTRIBUTES */ -#ifdef CONFIG_KVM_PRIVATE_MEM +#ifdef CONFIG_KVM_GMEM int kvm_gmem_get_pfn(struct kvm *kvm, struct kvm_memory_slot *slot, gfn_t gfn, kvm_pfn_t *pfn, struct page **page, int *max_order); @@ -2550,7 +2550,7 @@ static inline int kvm_gmem_get_pfn(struct kvm *kvm, KVM_BUG_ON(1, kvm); return -EIO; } -#endif /* CONFIG_KVM_PRIVATE_MEM */ +#endif /* CONFIG_KVM_GMEM */ #ifdef CONFIG_HAVE_KVM_ARCH_GMEM_PREPARE int kvm_arch_gmem_prepare(struct kvm *kvm, gfn_t gfn, kvm_pfn_t pfn, int max_order); diff --git a/virt/kvm/Kconfig b/virt/kvm/Kconfig index 727b542074e7..49df4e32bff7 100644 --- a/virt/kvm/Kconfig +++ b/virt/kvm/Kconfig @@ -112,19 +112,19 @@ config KVM_GENERIC_MEMORY_ATTRIBUTES depends on KVM_GENERIC_MMU_NOTIFIER bool -config KVM_PRIVATE_MEM +config KVM_GMEM select XARRAY_MULTI bool config KVM_GENERIC_PRIVATE_MEM select KVM_GENERIC_MEMORY_ATTRIBUTES - select KVM_PRIVATE_MEM + select KVM_GMEM bool config HAVE_KVM_ARCH_GMEM_PREPARE bool - depends on KVM_PRIVATE_MEM + depends on KVM_GMEM config HAVE_KVM_ARCH_GMEM_INVALIDATE bool - depends on KVM_PRIVATE_MEM + depends on KVM_GMEM diff --git a/virt/kvm/Makefile.kvm b/virt/kvm/Makefile.kvm index 724c89af78af..8d00918d4c8b 100644 --- a/virt/kvm/Makefile.kvm +++ b/virt/kvm/Makefile.kvm @@ -12,4 +12,4 @@ kvm-$(CONFIG_KVM_ASYNC_PF) += $(KVM)/async_pf.o kvm-$(CONFIG_HAVE_KVM_IRQ_ROUTING) += $(KVM)/irqchip.o kvm-$(CONFIG_HAVE_KVM_DIRTY_RING) += $(KVM)/dirty_ring.o kvm-$(CONFIG_HAVE_KVM_PFNCACHE) += $(KVM)/pfncache.o -kvm-$(CONFIG_KVM_PRIVATE_MEM) += $(KVM)/guest_memfd.o +kvm-$(CONFIG_KVM_GMEM) += $(KVM)/guest_memfd.o diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 222f0e894a0c..d5f0ec2d321f 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -4913,7 +4913,7 @@ static int kvm_vm_ioctl_check_extension_generic(struct kvm *kvm, long arg) case KVM_CAP_MEMORY_ATTRIBUTES: return kvm_supported_mem_attributes(kvm); #endif -#ifdef CONFIG_KVM_PRIVATE_MEM +#ifdef CONFIG_KVM_GMEM case KVM_CAP_GUEST_MEMFD: return !kvm || kvm_arch_has_private_mem(kvm); #endif @@ -5347,7 +5347,7 @@ static long kvm_vm_ioctl(struct file *filp, case KVM_GET_STATS_FD: r = kvm_vm_ioctl_get_stats_fd(kvm); break; -#ifdef CONFIG_KVM_PRIVATE_MEM +#ifdef CONFIG_KVM_GMEM case KVM_CREATE_GUEST_MEMFD: { struct kvm_create_guest_memfd guest_memfd; diff --git a/virt/kvm/kvm_mm.h b/virt/kvm/kvm_mm.h index acef3f5c582a..ec311c0d6718 100644 --- a/virt/kvm/kvm_mm.h +++ b/virt/kvm/kvm_mm.h @@ -67,7 +67,7 @@ static inline void gfn_to_pfn_cache_invalidate_start(struct kvm *kvm, } #endif /* HAVE_KVM_PFNCACHE */ -#ifdef CONFIG_KVM_PRIVATE_MEM +#ifdef CONFIG_KVM_GMEM void kvm_gmem_init(struct module *module); 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, @@ -91,6 +91,6 @@ static inline void kvm_gmem_unbind(struct kvm_memory_slot *slot) { WARN_ON_ONCE(1); } -#endif /* CONFIG_KVM_PRIVATE_MEM */ +#endif /* CONFIG_KVM_GMEM */ #endif /* __KVM_MM_H__ */ -- 2.50.0.727.gbf7dc18ff4-goog