Re: [PATCH kernel v2] KVM: PPC: Use arch_get_random_seed_long instead of powernv variant
From: Fabiano Rosas <hidden>
Date: 2021-08-06 14:53:47
Also in:
linuxppc-dev
Alexey Kardashevskiy [off-list ref] writes:
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: Alexey Kardashevskiy <redacted>
Reviewed-by: Fabiano Rosas <redacted>
quoted hunk ↗ jump to hunk
--- Changes: v2: * replaces [PATCH kernel] powerpc/powernv: Check if powernv_rng is initialized --- arch/powerpc/kvm/book3s_hv.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c index be0cde26f156..ecfd133e0ca8 100644 --- a/arch/powerpc/kvm/book3s_hv.c +++ b/arch/powerpc/kvm/book3s_hv.c@@ -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: