From e881bfaf5a5f409390973e076333281465f2b0d9 Mon Sep 17 00:00:00 2001 From: Alexey Kardashevskiy Date: Thu, 11 Jun 2020 13:05:59 +1000 Subject: [PATCH] KVM: PPC: Fix nested guest RC bits update Before commit 6cdf30375f82 ("powerpc/kvm/book3s: Use kvm helpers to walk shadow or secondary table") we called __find_linux_pte() with a page table pointer from a kvm_nested_guest struct but now we rely on kvmhv_find_nested() which takes an L1 LPID and returns a kvm_nested_guest pointer, however we pass a L0 LPID there and the L2 guest hangs. This fixes the LPID passed to kvmppc_hv_handle_set_rc(). Fixes: 6cdf30375f82 ("powerpc/kvm/book3s: Use kvm helpers to walk shadow or secondary table") Signed-off-by: Alexey Kardashevskiy Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20200611030559.75257-1-aik@ozlabs.ru --- arch/powerpc/kvm/book3s_hv_nested.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/kvm/book3s_hv_nested.c b/arch/powerpc/kvm/book3s_hv_nested.c index 66c38ee37fd5..75993f44519b 100644 --- a/arch/powerpc/kvm/book3s_hv_nested.c +++ b/arch/powerpc/kvm/book3s_hv_nested.c @@ -1234,7 +1234,7 @@ static long kvmhv_handle_nested_set_rc(struct kvm_vcpu *vcpu, /* Set the rc bit in the pte of the shadow_pgtable for the nest guest */ ret = kvmppc_hv_handle_set_rc(kvm, true, writing, - n_gpa, gp->shadow_lpid); + n_gpa, gp->l1_lpid); if (!ret) ret = -EINVAL; else