From d49e8a9b46e4594223806ae622af462ff7bfa158 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= Date: Tue, 22 Oct 2019 18:38:10 +0200 Subject: ppc: Reset the interrupt presenter from the CPU reset handler MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit On the sPAPR machine and PowerNV machine, the interrupt presenters are created by a machine handler at the core level and are reset independently. This is not consistent and it raises issues when it comes to handle hot-plugged CPUs. In that case, the presenters are not reset. This is less of an issue in XICS, although a zero MFFR could be a concern, but in XIVE, the OS CAM line is not set and this breaks the presenting algorithm. The current code has workarounds which need a global cleanup. Extend the sPAPR IRQ backend and the PowerNV Chip class with a new cpu_intc_reset() handler called by the CPU reset handler and remove the XiveTCTX reset handler which is now redundant. Signed-off-by: Cédric Le Goater Message-Id: <20191022163812.330-6-clg@kaod.org> Reviewed-by: Greg Kurz Reviewed-by: Philippe Mathieu-Daudé Signed-off-by: David Gibson --- hw/intc/spapr_xive.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'hw/intc/spapr_xive.c') diff --git a/hw/intc/spapr_xive.c b/hw/intc/spapr_xive.c index ba32d2cc5b..20a8d8285f 100644 --- a/hw/intc/spapr_xive.c +++ b/hw/intc/spapr_xive.c @@ -553,6 +553,14 @@ static int spapr_xive_cpu_intc_create(SpaprInterruptController *intc, return 0; } +static void spapr_xive_cpu_intc_reset(SpaprInterruptController *intc, + PowerPCCPU *cpu) +{ + XiveTCTX *tctx = spapr_cpu_state(cpu)->tctx; + + xive_tctx_reset(tctx); +} + static void spapr_xive_set_irq(SpaprInterruptController *intc, int irq, int val) { SpaprXive *xive = SPAPR_XIVE(intc); @@ -697,6 +705,7 @@ static void spapr_xive_class_init(ObjectClass *klass, void *data) sicc->activate = spapr_xive_activate; sicc->deactivate = spapr_xive_deactivate; sicc->cpu_intc_create = spapr_xive_cpu_intc_create; + sicc->cpu_intc_reset = spapr_xive_cpu_intc_reset; 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