From 0990ce6a2e900d0bdda7f3ecdc991746f63551fb Mon Sep 17 00:00:00 2001 From: Greg Kurz Date: Thu, 24 Oct 2019 16:27:22 +0200 Subject: ppc: Add intc_destroy() handlers to SpaprInterruptController/PnvChip SpaprInterruptControllerClass and PnvChipClass have an intc_create() method that calls the appropriate routine, ie. icp_create() or xive_tctx_create(), to establish the link between the VCPU and the presenter component of the interrupt controller during realize. There aren't any symmetrical call to be called when the VCPU gets unrealized though. It is assumed that object_unparent() is the only thing to do. This is questionable because the parenting logic around the CPU and presenter objects is really an implementation detail of the interrupt controller. It shouldn't be open-coded in the machine code. Fix this by adding an intc_destroy() method that undoes what was done in intc_create(). Also NULLify the presenter pointers to avoid having stale pointers around. This will allow to reliably check if a vCPU has a valid presenter. Signed-off-by: Greg Kurz Message-Id: <157192724208.3146912.7254684777515287626.stgit@bahia.lan> Signed-off-by: David Gibson Signed-off-by: Laurent Vivier --- hw/intc/spapr_xive.c | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'hw/intc/spapr_xive.c') diff --git a/hw/intc/spapr_xive.c b/hw/intc/spapr_xive.c index d8e1291905..9cb8d38a3b 100644 --- a/hw/intc/spapr_xive.c +++ b/hw/intc/spapr_xive.c @@ -555,6 +555,15 @@ static void spapr_xive_cpu_intc_reset(SpaprInterruptController *intc, xive_tctx_set_os_cam(tctx, xive_nvt_cam_line(nvt_blk, nvt_idx)); } +static void spapr_xive_cpu_intc_destroy(SpaprInterruptController *intc, + PowerPCCPU *cpu) +{ + SpaprCpuState *spapr_cpu = spapr_cpu_state(cpu); + + xive_tctx_destroy(spapr_cpu->tctx); + spapr_cpu->tctx = NULL; +} + static void spapr_xive_set_irq(SpaprInterruptController *intc, int irq, int val) { SpaprXive *xive = SPAPR_XIVE(intc); @@ -692,6 +701,7 @@ static void spapr_xive_class_init(ObjectClass *klass, void *data) sicc->deactivate = spapr_xive_deactivate; sicc->cpu_intc_create = spapr_xive_cpu_intc_create; sicc->cpu_intc_reset = spapr_xive_cpu_intc_reset; + sicc->cpu_intc_destroy = spapr_xive_cpu_intc_destroy; sicc->claim_irq = spapr_xive_claim_irq; sicc->free_irq = spapr_xive_free_irq; sicc->set_irq = spapr_xive_set_irq; -- cgit v1.2.3