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| author | Anup Patel | 2013-11-14 16:20:08 +0100 |
|---|---|---|
| committer | Marc Zyngier | 2013-12-28 11:28:50 +0100 |
| commit | e28100bd8ed9e37b7cd4578140a1e7f95bd40835 (patch) | |
| tree | 0f08697c384129e26eb2db125ff2c1a1383fbd1f /arch/arm64/kvm/guest.c | |
| parent | arm64: KVM: Add Kconfig option for max VCPUs per-Guest (diff) | |
| download | kernel-qcow2-linux-e28100bd8ed9e37b7cd4578140a1e7f95bd40835.tar.gz kernel-qcow2-linux-e28100bd8ed9e37b7cd4578140a1e7f95bd40835.tar.xz kernel-qcow2-linux-e28100bd8ed9e37b7cd4578140a1e7f95bd40835.zip | |
arm64: KVM: Support X-Gene guest VCPU on APM X-Gene host
This patch allows us to have X-Gene guest VCPU when using KVM arm64
on APM X-Gene host.
We add KVM_ARM_TARGET_XGENE_POTENZA for X-Gene Potenza compatible
guest VCPU and we return KVM_ARM_TARGET_XGENE_POTENZA in kvm_target_cpu()
when running on X-Gene host with Potenza core.
[maz: sanitized the commit log]
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/guest.c')
| -rw-r--r-- | arch/arm64/kvm/guest.c | 32 |
1 files changed, 19 insertions, 13 deletions
diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c index 3f0731e53274..08745578d54d 100644 --- a/arch/arm64/kvm/guest.c +++ b/arch/arm64/kvm/guest.c @@ -207,20 +207,26 @@ int __attribute_const__ kvm_target_cpu(void) unsigned long implementor = read_cpuid_implementor(); unsigned long part_number = read_cpuid_part_number(); - if (implementor != ARM_CPU_IMP_ARM) - return -EINVAL; + switch (implementor) { + case ARM_CPU_IMP_ARM: + switch (part_number) { + case ARM_CPU_PART_AEM_V8: + return KVM_ARM_TARGET_AEM_V8; + case ARM_CPU_PART_FOUNDATION: + return KVM_ARM_TARGET_FOUNDATION_V8; + case ARM_CPU_PART_CORTEX_A57: + return KVM_ARM_TARGET_CORTEX_A57; + }; + break; + case ARM_CPU_IMP_APM: + switch (part_number) { + case APM_CPU_PART_POTENZA: + return KVM_ARM_TARGET_XGENE_POTENZA; + }; + break; + }; - switch (part_number) { - case ARM_CPU_PART_AEM_V8: - return KVM_ARM_TARGET_AEM_V8; - case ARM_CPU_PART_FOUNDATION: - return KVM_ARM_TARGET_FOUNDATION_V8; - case ARM_CPU_PART_CORTEX_A57: - /* Currently handled by the generic backend */ - return KVM_ARM_TARGET_CORTEX_A57; - default: - return -EINVAL; - } + return -EINVAL; } int kvm_vcpu_set_target(struct kvm_vcpu *vcpu, |