irqchip/gic-v3-its: Check that all RDs have the same property table
If booting with LPIs enabled, all the redistributors must have the exact same property table. No ifs, no buts. Tested-by: Jeremy Linton <jeremy.linton@arm.com> Tested-by: Bhupesh Sharma <bhsharma@redhat.com> Tested-by: Lei Zhang <zhang.lei@jp.fujitsu.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
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@ -2029,6 +2029,15 @@ static void its_cpu_init_lpis(void)
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val = readl_relaxed(rbase + GICR_CTLR);
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if ((gic_rdists->flags & RDIST_FLAGS_RD_TABLES_PREALLOCATED) &&
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(val & GICR_CTLR_ENABLE_LPIS)) {
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/*
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* Check that we get the same property table on all
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* RDs. If we don't, this is hopeless.
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*/
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paddr = gicr_read_propbaser(rbase + GICR_PROPBASER);
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paddr &= GENMASK_ULL(51, 12);
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if (WARN_ON(gic_rdists->prop_table_pa != paddr))
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add_taint(TAINT_CRAP, LOCKDEP_STILL_OK);
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paddr = gicr_read_pendbaser(rbase + GICR_PENDBASER);
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paddr &= GENMASK_ULL(51, 16);
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