[PATCH 3/3] KVM: PPC: Book3S HV: XIVE: fix the enforced limit on the vCPU identifier

Cédric Le Goater
2019-05-20T07:20:56Z

When a vCPU is connected to the KVM device, it is done using its vCPU
identifier in the guest. Fix the enforced limit on the vCPU identifier
by taking into account the SMT mode.

Reported-by: Satheesh Rajendran <sathnaga@linux.vnet.ibm.com>
Tested-by: Satheesh Rajendran <sathnaga@linux.vnet.ibm.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
---
arch/powerpc/kvm/book3s_xive_native.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/kvm/book3s_xive_native.c b/arch/powerpc/kvm/book3s_xive_native.c
index 3fdea6bf4e97..25b6b0e2d02a 100644
--- a/arch/powerpc/kvm/book3s_xive_native.c
+++ b/arch/powerpc/kvm/book3s_xive_native.c
@@ -109,7 +109,7 @@ int kvmppc_xive_native_connect_vcpu(struct kvm_device *dev,
return -EPERM;
if (vcpu->arch.irq_type != KVMPPC_IRQ_DEFAULT)
return -EBUSY;
- if (server_num >= KVM_MAX_VCPUS) {
+ if (server_num >= (KVM_MAX_VCPUS * vcpu->kvm->arch.emul_smt_mode)) {
pr_devel("Out of bounds !\n");
return -EINVAL;
}
--
2.20.1