From 6398326b9ba182936bdc9d66475c09e39b701aa2 Mon Sep 17 00:00:00 2001 From: Nicholas Piggin Date: Tue, 23 Nov 2021 19:52:30 +1000 Subject: KVM: PPC: Book3S HV P9: Stop using vc->dpdes The P9 path uses vc->dpdes only for msgsndp / SMT emulation. This adds an ordering requirement between vcpu->doorbell_request and vc->dpdes for no real benefit. Use vcpu->doorbell_request directly. Signed-off-by: Nicholas Piggin Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20211123095231.1036501-53-npiggin@gmail.com --- arch/powerpc/kvm/book3s_hv_builtin.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch/powerpc/kvm/book3s_hv_builtin.c') diff --git a/arch/powerpc/kvm/book3s_hv_builtin.c b/arch/powerpc/kvm/book3s_hv_builtin.c index ad70756a777c..7d6d91338c3f 100644 --- a/arch/powerpc/kvm/book3s_hv_builtin.c +++ b/arch/powerpc/kvm/book3s_hv_builtin.c @@ -649,6 +649,8 @@ void kvmppc_guest_entry_inject_int(struct kvm_vcpu *vcpu) int ext; unsigned long lpcr; + WARN_ON_ONCE(cpu_has_feature(CPU_FTR_ARCH_300)); + /* Insert EXTERNAL bit into LPCR at the MER bit position */ ext = (vcpu->arch.pending_exceptions >> BOOK3S_IRQPRIO_EXTERNAL) & 1; lpcr = mfspr(SPRN_LPCR); -- cgit v1.2.3