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KVM: PPC: Book3S HV nestedv2: Avoid msr check in kvmppc_handle_exit_hv()

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The msr check in kvmppc_handle_exit_hv() is not needed for nestedv2 hosts,
skip the check to avoid a H_GUEST_GET_STATE hcall.

Signed-off-by: Jordan Niethe <jniethe5@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20231201132618.555031-9-vaibhav@linux.ibm.com
This commit is contained in:
Jordan Niethe 2023-12-01 18:56:13 +05:30 committed by Michael Ellerman
parent df938a5576
commit a9a3de530d
1 changed files with 1 additions and 1 deletions
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2
arch/powerpc/kvm/book3s_hv.c
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@ -1597,7 +1597,7 @@ static int kvmppc_handle_exit_hv(struct kvm_vcpu *vcpu,
* That can happen due to a bug, or due to a machine check
* occurring at just the wrong time.
*/
if (__kvmppc_get_msr_hv(vcpu) & MSR_HV) {
if (!kvmhv_is_nestedv2() && (__kvmppc_get_msr_hv(vcpu) & MSR_HV)) {
printk(KERN_EMERG "KVM trap in HV mode!\n");
printk(KERN_EMERG "trap=0x%x | pc=0x%lx | msr=0x%llx\n",
vcpu->arch.trap, kvmppc_get_pc(vcpu),