Commit e881bfaf authored by Alexey Kardashevskiy's avatar Alexey Kardashevskiy Committed by Michael Ellerman
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KVM: PPC: Fix nested guest RC bits update 



Before commit 6cdf3037 ("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: 6cdf3037 ("powerpc/kvm/book3s: Use kvm helpers to walk shadow or secondary table")
Signed-off-by: default avatarAlexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200611030559.75257-1-aik@ozlabs.ru
parent 7ae77150

arch/powerpc/kvm/book3s_hv_nested.c

+1 −1
Original line number Diff line number Diff line
@@ -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