diff options
| author | Nicholas Piggin <npiggin@gmail.com> | 2021-11-23 12:52:30 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-11-24 13:09:03 +0300 |
| commit | 6398326b9ba182936bdc9d66475c09e39b701aa2 (patch) | |
| tree | 401ddcd3111962ec1639932899dab78d3bbdc57e /arch/powerpc/kvm/book3s_hv_builtin.c | |
| parent | 617326ff01df30796d897895ebd18ce583c9b883 (diff) | |
| download | linux-6398326b9ba182936bdc9d66475c09e39b701aa2.tar.xz | |
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 <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20211123095231.1036501-53-npiggin@gmail.com
Diffstat (limited to 'arch/powerpc/kvm/book3s_hv_builtin.c')
| -rw-r--r-- | arch/powerpc/kvm/book3s_hv_builtin.c | 2 |
1 files changed, 2 insertions, 0 deletions
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); |