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Claudio Imbrenda
bea77e83c0
Implement and enable the KVM_PRE_FAULT_MEMORY ioctl for s390. Faulted-in pages will be marked as accessed, unlike x86, otherwise they will trigger a minor fault when accessed. Avoiding such faults is one of the points of KVM_PRE_FAULT_MEMORY. Reviewed-by: Steffen Eiden <seiden@linux.ibm.com> Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com> Message-ID: <20260527144358.186359-3-imbrenda@linux.ibm.com>
57 lines
1.4 KiB
Plaintext
57 lines
1.4 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0
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#
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# KVM configuration
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#
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source "virt/kvm/Kconfig"
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menuconfig VIRTUALIZATION
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def_bool y
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prompt "KVM"
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help
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Say Y here to get to see options for using your Linux host to run other
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operating systems inside virtual machines (guests).
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This option alone does not add any kernel code.
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If you say N, all options in this submenu will be skipped and disabled.
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if VIRTUALIZATION
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config KVM
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def_tristate y
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prompt "Kernel-based Virtual Machine (KVM) support"
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select HAVE_KVM_CPU_RELAX_INTERCEPT
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select KVM_ASYNC_PF
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select KVM_ASYNC_PF_SYNC
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select KVM_COMMON
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select HAVE_KVM_IRQCHIP
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select HAVE_KVM_IRQ_ROUTING
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select HAVE_KVM_INVALID_WAKEUPS
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select HAVE_KVM_NO_POLL
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select KVM_VFIO
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select VIRT_XFER_TO_GUEST_WORK
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select KVM_MMU_LOCKLESS_AGING
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select KVM_GENERIC_PRE_FAULT_MEMORY
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help
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Support hosting paravirtualized guest machines using the SIE
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virtualization capability on the mainframe. This should work
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on any 64bit machine.
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This module provides access to the hardware capabilities through
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a character device node named /dev/kvm.
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To compile this as a module, choose M here: the module
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will be called kvm.
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If unsure, say N.
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config KVM_S390_UCONTROL
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bool "Userspace controlled virtual machines"
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depends on KVM
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help
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Allow CAP_SYS_ADMIN users to create KVM virtual machines that are
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controlled by userspace.
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If unsure, say N.
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endif # VIRTUALIZATION
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