diff options
author | Paul Mackerras <paulus@ozlabs.org> | 2018-10-08 16:31:17 +1100 |
---|---|---|
committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-10-09 16:04:27 +1100 |
commit | 83a055104eaf89589582659737ff5bf6eed63ac4 (patch) | |
tree | 4eb46ed6e4e9d564a62a4dc900703fd7b9a9de9e /arch/powerpc/kvm/book3s_hv_nested.c | |
parent | de760db4d9d7b3e735dbc7e4e3fa2c00909abe7c (diff) |
KVM: PPC: Book3S HV: Add nested shadow page tables to debugfs
This adds a list of valid shadow PTEs for each nested guest to
the 'radix' file for the guest in debugfs. This can be useful for
debugging.
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/kvm/book3s_hv_nested.c')
-rw-r--r-- | arch/powerpc/kvm/book3s_hv_nested.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/powerpc/kvm/book3s_hv_nested.c b/arch/powerpc/kvm/book3s_hv_nested.c index 3f21f785bf0a..401d2ecbebc5 100644 --- a/arch/powerpc/kvm/book3s_hv_nested.c +++ b/arch/powerpc/kvm/book3s_hv_nested.c @@ -1274,3 +1274,18 @@ long int kvmhv_nested_page_fault(struct kvm_vcpu *vcpu) mutex_unlock(&gp->tlb_lock); return ret; } + +int kvmhv_nested_next_lpid(struct kvm *kvm, int lpid) +{ + int ret = -1; + + spin_lock(&kvm->mmu_lock); + while (++lpid <= kvm->arch.max_nested_lpid) { + if (kvm->arch.nested_guests[lpid]) { + ret = lpid; + break; + } + } + spin_unlock(&kvm->mmu_lock); + return ret; +} |