Commit 2ac78e0c authored by Alexey Kardashevskiy's avatar Alexey Kardashevskiy Committed by Michael Ellerman
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KVM: PPC: Use arch_get_random_seed_long instead of powernv variant 



The powernv_get_random_long() does not work in nested KVM (which is
pseries) and produces a crash when accessing in_be64(rng->regs) in
powernv_get_random_long().

This replaces powernv_get_random_long with the ppc_md machine hook
wrapper.

Signed-off-by: default avatarAlexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: default avatarFabiano Rosas <farosas@linux.ibm.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210805075649.2086567-1-aik@ozlabs.ru
parent 9b49f979

arch/powerpc/kvm/book3s_hv.c

+1 −1
Original line number Diff line number Diff line
@@ -1165,7 +1165,7 @@ int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu) 
		break;

#endif

	case H_RANDOM:

		if (!powernv_get_random_long(&vcpu->arch.regs.gpr[4]))

		if (!arch_get_random_seed_long(&vcpu->arch.regs.gpr[4]))

			ret = H_HARDWARE;

		break;

	case H_RPT_INVALIDATE: