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da7814700a
Current max VCPUs per-Guest is set to 4 which is preventing us from creating a Guest (or VM) with 8 VCPUs on Host (e.g. X-Gene Storm SOC) with 8 Host CPUs. The correct value of max VCPUs per-Guest should be same as the max CPUs supported by GICv2 which is 8 but, increasing value of max VCPUs per-Guest can make things slower hence we add Kconfig option to let KVM users select appropriate max VCPUs per-Guest. Signed-off-by: Anup Patel <anup.patel@linaro.org> Signed-off-by: Pranavkumar Sawargaonkar <pranavkumar@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
64 lines
1.4 KiB
Plaintext
64 lines
1.4 KiB
Plaintext
#
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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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bool "Virtualization"
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---help---
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Say Y here to get to see options for using your Linux host to run
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other 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
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disabled.
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if VIRTUALIZATION
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config KVM
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bool "Kernel-based Virtual Machine (KVM) support"
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select MMU_NOTIFIER
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select PREEMPT_NOTIFIERS
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select ANON_INODES
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select HAVE_KVM_CPU_RELAX_INTERCEPT
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select KVM_MMIO
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select KVM_ARM_HOST
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select KVM_ARM_VGIC
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select KVM_ARM_TIMER
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---help---
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Support hosting virtualized guest machines.
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If unsure, say N.
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config KVM_ARM_HOST
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bool
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---help---
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Provides host support for ARM processors.
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config KVM_ARM_MAX_VCPUS
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int "Number maximum supported virtual CPUs per VM"
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depends on KVM_ARM_HOST
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default 4
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help
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Static number of max supported virtual CPUs per VM.
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If you choose a high number, the vcpu structures will be quite
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large, so only choose a reasonable number that you expect to
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actually use.
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config KVM_ARM_VGIC
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bool
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depends on KVM_ARM_HOST && OF
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select HAVE_KVM_IRQCHIP
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---help---
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Adds support for a hardware assisted, in-kernel GIC emulation.
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config KVM_ARM_TIMER
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bool
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depends on KVM_ARM_VGIC
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---help---
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Adds support for the Architected Timers in virtual machines.
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endif # VIRTUALIZATION
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