[v3,10/11] KVM: arm64: Enable mapping guest_memfd in arm64

Message ID	20250211121128.703390-11-tabba@google.com (mailing list archive)
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Headers	show Return-Path: <owner-linux-mm@kvack.org> Date: Tue, 11 Feb 2025 12:11:26 +0000 In-Reply-To: <20250211121128.703390-1-tabba@google.com> Mime-Version: 1.0 References: <20250211121128.703390-1-tabba@google.com> Message-ID: <20250211121128.703390-11-tabba@google.com> Subject: [PATCH v3 10/11] KVM: arm64: Enable mapping guest_memfd in arm64 From: Fuad Tabba <tabba@google.com> To: kvm@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-mm@kvack.org 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, yu.c.zhang@linux.intel.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, tabba@google.com Content-Type: text/plain; charset="UTF-8" Sender: owner-linux-mm@kvack.org Precedence: bulk
Series	KVM: Mapping guest_memfd backed memory at the host for software protected VMs \| expand [v3,00/11] KVM: Mapping guest_memfd backed memory at the host for software protected VMs [v3,01/11] mm: Consolidate freeing of typed folios on final folio_put() [v3,02/11] KVM: guest_memfd: Handle final folio_put() of guest_memfd pages [v3,03/11] KVM: guest_memfd: Allow host to map guest_memfd() pages [v3,04/11] KVM: guest_memfd: Add KVM capability to check if guest_memfd is shared [v3,05/11] KVM: guest_memfd: Handle in-place shared memory as guest_memfd backed memory [v3,06/11] KVM: x86: Mark KVM_X86_SW_PROTECTED_VM as supporting guest_memfd shared memory [v3,07/11] KVM: arm64: Refactor user_mem_abort() calculation of force_pte [v3,08/11] KVM: arm64: Handle guest_memfd()-backed guest page faults [v3,09/11] KVM: arm64: Introduce KVM_VM_TYPE_ARM_SW_PROTECTED machine type [v3,10/11] KVM: arm64: Enable mapping guest_memfd in arm64 [v3,11/11] KVM: guest_memfd: selftests: guest_memfd mmap() test when mapping is allowed

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20250211121128.703390-11-tabba@google.com (mailing list archive)

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Date: Tue, 11 Feb 2025 12:11:26 +0000
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Subject: [PATCH v3 10/11] KVM: arm64: Enable mapping guest_memfd in arm64
From: Fuad Tabba <tabba@google.com>
To: kvm@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-mm@kvack.org
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,
	yu.c.zhang@linux.intel.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, tabba@google.com
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Series

KVM: Mapping guest_memfd backed memory at the host for software protected VMs | expand

Commit Message

Fuad Tabba Feb. 11, 2025, 12:11 p.m. UTC

Enable mapping guest_memfd in arm64, which would only apply to
VMs with the type KVM_VM_TYPE_ARM_SW_PROTECTED.

Signed-off-by: Fuad Tabba <tabba@google.com>
---
 arch/arm64/kvm/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/kvm/Kconfig b/arch/arm64/kvm/Kconfig
index ead632ad01b4..4830d8805bed 100644
--- a/arch/arm64/kvm/Kconfig
+++ b/arch/arm64/kvm/Kconfig
@@ -38,6 +38,7 @@  menuconfig KVM
 	select HAVE_KVM_VCPU_RUN_PID_CHANGE
 	select SCHED_INFO
 	select GUEST_PERF_EVENTS if PERF_EVENTS
+	select KVM_GMEM_SHARED_MEM
 	help
 	  Support hosting virtualized guest machines.

[v3,10/11] KVM: arm64: Enable mapping guest_memfd in arm64

Commit Message

Patch