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| author | Sean Christopherson <sean.j.christopherson@intel.com> | 2019-12-18 13:55:09 -0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-01-24 09:19:07 +0100 |
| commit | 897cc38eaab96d006ab17edd0f50a2f432f584cf (patch) | |
| tree | 4424da47ceebcd43cd400d7b71572b57abe938c5 /arch/x86/kvm/x86.c | |
| parent | fe931f12277186d1a9d38ba6729b42e8edb68988 (diff) | |
| download | lwn-897cc38eaab96d006ab17edd0f50a2f432f584cf.tar.gz lwn-897cc38eaab96d006ab17edd0f50a2f432f584cf.zip | |
KVM: Add kvm_arch_vcpu_precreate() to handle pre-allocation issues
Add a pre-allocation arch hook to handle checks that are currently done
by arch specific code prior to allocating the vCPU object. This paves
the way for moving the allocation to common KVM code.
Acked-by: Christoffer Dall <christoffer.dall@arm.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/x86.c')
| -rw-r--r-- | arch/x86/kvm/x86.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 8188d6cac588..661e3c40529f 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -9170,17 +9170,21 @@ static void fx_init(struct kvm_vcpu *vcpu) vcpu->arch.cr0 |= X86_CR0_ET; } +int kvm_arch_vcpu_precreate(struct kvm *kvm, unsigned int id) +{ + if (kvm_check_tsc_unstable() && atomic_read(&kvm->online_vcpus) != 0) + pr_warn_once("kvm: SMP vm created on host with unstable TSC; " + "guest TSC will not be reliable\n"); + + return 0; +} + struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id) { struct kvm_vcpu *vcpu; int r; - if (kvm_check_tsc_unstable() && atomic_read(&kvm->online_vcpus) != 0) - printk_once(KERN_WARNING - "kvm: SMP vm created on host with unstable TSC; " - "guest TSC will not be reliable\n"); - vcpu = kmem_cache_zalloc(kvm_vcpu_cache, GFP_KERNEL_ACCOUNT); if (!vcpu) return ERR_PTR(-ENOMEM); |