From 2fb1e946450a4fef74bb72f360555f7760d816f0 Mon Sep 17 00:00:00 2001 From: Sam Bobroff Date: Tue, 26 Sep 2017 16:47:04 +1000 Subject: KVM: PPC: Book3S: Fix server always zero from kvmppc_xive_get_xive() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit In KVM's XICS-on-XIVE emulation, kvmppc_xive_get_xive() returns the value of state->guest_server as "server". However, this value is not set by it's counterpart kvmppc_xive_set_xive(). When the guest uses this interface to migrate interrupts away from a CPU that is going offline, it sees all interrupts as belonging to CPU 0, so they are left assigned to (now) offline CPUs. This patch removes the guest_server field from the state, and returns act_server in it's place (that is, the CPU actually handling the interrupt, which may differ from the one requested). Fixes: 5af50993850a ("KVM: PPC: Book3S HV: Native usage of the XIVE interrupt controller") Cc: stable@vger.kernel.org Signed-off-by: Sam Bobroff Acked-by: Benjamin Herrenschmidt Signed-off-by: Radim Krčmář --- arch/powerpc/kvm/book3s_xive.h | 1 - 1 file changed, 1 deletion(-) (limited to 'arch/powerpc/kvm/book3s_xive.h') diff --git a/arch/powerpc/kvm/book3s_xive.h b/arch/powerpc/kvm/book3s_xive.h index 5938f7644dc1..6ba63f8e8a61 100644 --- a/arch/powerpc/kvm/book3s_xive.h +++ b/arch/powerpc/kvm/book3s_xive.h @@ -35,7 +35,6 @@ struct kvmppc_xive_irq_state { struct xive_irq_data *pt_data; /* XIVE Pass-through associated data */ /* Targetting as set by guest */ - u32 guest_server; /* Current guest selected target */ u8 guest_priority; /* Guest set priority */ u8 saved_priority; /* Saved priority when masking */ -- cgit v1.2.3