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| author | Anup Patel <anup.patel@linaro.org> | 2013-12-12 17:12:22 +0100 |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2013-12-28 11:28:50 +0100 |
| commit | da7814700a0c408bead58ce4714b7625ffbaade1 (patch) | |
| tree | 19919bfdc4206bd9f1a33f30fbb4eb034eed6cdb /arch/arm64/kvm | |
| parent | Linux 3.13-rc2 (diff) | |
| download | linux-da7814700a0c408bead58ce4714b7625ffbaade1.tar.xz linux-da7814700a0c408bead58ce4714b7625ffbaade1.zip | |
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 <anup.patel@linaro.org>
Signed-off-by: Pranavkumar Sawargaonkar <pranavkumar@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'arch/arm64/kvm')
| -rw-r--r-- | arch/arm64/kvm/Kconfig | 11 |
1 files changed, 11 insertions, 0 deletions
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 |