From da7814700a0c408bead58ce4714b7625ffbaade1 Mon Sep 17 00:00:00 2001 From: Anup Patel Date: Thu, 12 Dec 2013 16:12:22 +0000 Subject: arm64: KVM: Add Kconfig option for max VCPUs per-Guest 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 Signed-off-by: Pranavkumar Sawargaonkar Signed-off-by: Marc Zyngier --- arch/arm64/kvm/Kconfig | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'arch/arm64/kvm/Kconfig') diff --git a/arch/arm64/kvm/Kconfig b/arch/arm64/kvm/Kconfig index 4480ab339a00..8ba85e9ea388 100644 --- a/arch/arm64/kvm/Kconfig +++ b/arch/arm64/kvm/Kconfig @@ -36,6 +36,17 @@ config KVM_ARM_HOST ---help--- Provides host support for ARM processors. +config KVM_ARM_MAX_VCPUS + int "Number maximum supported virtual CPUs per VM" + depends on KVM_ARM_HOST + default 4 + help + Static number of max supported virtual CPUs per VM. + + If you choose a high number, the vcpu structures will be quite + large, so only choose a reasonable number that you expect to + actually use. + config KVM_ARM_VGIC bool depends on KVM_ARM_HOST && OF -- cgit v1.2.3