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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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c1d1ee9ac1
The target_cpus() callback of the apic struct is not really useful. Some APICs return cpu_online_mask and others cpus_all_mask. The latter is bogus as it does not take holes in the cpus_possible_mask into account. Replace it with cpus_online_mask which makes the most sense and remove the callback. The usage sites will be removed in a later step anyway, so get rid of it now to have incremental changes. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Juergen Gross <jgross@suse.com> Tested-by: Yu Chen <yu.c.chen@intel.com> Acked-by: Juergen Gross <jgross@suse.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Alok Kataria <akataria@vmware.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Christoph Hellwig <hch@lst.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Rui Zhang <rui.zhang@intel.com> Cc: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Len Brown <lenb@kernel.org> Link: https://lkml.kernel.org/r/20170913213154.070850916@linutronix.de
85 lines
2.1 KiB
C
85 lines
2.1 KiB
C
/*
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* Common functions shared between the various APIC flavours
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*
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* SPDX-License-Identifier: GPL-2.0
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*/
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#include <linux/irq.h>
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#include <asm/apic.h>
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int default_cpu_mask_to_apicid(const struct cpumask *msk, struct irq_data *irqd,
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unsigned int *apicid)
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{
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unsigned int cpu = cpumask_first(msk);
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if (cpu >= nr_cpu_ids)
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return -EINVAL;
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*apicid = per_cpu(x86_cpu_to_apicid, cpu);
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irq_data_update_effective_affinity(irqd, cpumask_of(cpu));
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return 0;
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}
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int flat_cpu_mask_to_apicid(const struct cpumask *mask, struct irq_data *irqd,
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unsigned int *apicid)
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{
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struct cpumask *effmsk = irq_data_get_effective_affinity_mask(irqd);
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unsigned long cpu_mask = cpumask_bits(mask)[0] & APIC_ALL_CPUS;
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if (!cpu_mask)
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return -EINVAL;
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*apicid = (unsigned int)cpu_mask;
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cpumask_bits(effmsk)[0] = cpu_mask;
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return 0;
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}
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bool default_check_apicid_used(physid_mask_t *map, int apicid)
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{
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return physid_isset(apicid, *map);
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}
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void flat_vector_allocation_domain(int cpu, struct cpumask *retmask,
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const struct cpumask *mask)
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{
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/*
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* Careful. Some cpus do not strictly honor the set of cpus
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* specified in the interrupt destination when using lowest
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* priority interrupt delivery mode.
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*
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* In particular there was a hyperthreading cpu observed to
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* deliver interrupts to the wrong hyperthread when only one
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* hyperthread was specified in the interrupt desitination.
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*/
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cpumask_clear(retmask);
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cpumask_bits(retmask)[0] = APIC_ALL_CPUS;
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}
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void default_vector_allocation_domain(int cpu, struct cpumask *retmask,
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const struct cpumask *mask)
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{
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cpumask_copy(retmask, cpumask_of(cpu));
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}
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void default_ioapic_phys_id_map(physid_mask_t *phys_map, physid_mask_t *retmap)
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{
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*retmap = *phys_map;
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}
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int default_cpu_present_to_apicid(int mps_cpu)
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{
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if (mps_cpu < nr_cpu_ids && cpu_present(mps_cpu))
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return (int)per_cpu(x86_bios_cpu_apicid, mps_cpu);
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else
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return BAD_APICID;
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}
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EXPORT_SYMBOL_GPL(default_cpu_present_to_apicid);
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int default_check_phys_apicid_present(int phys_apicid)
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{
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return physid_isset(phys_apicid, phys_cpu_present_map);
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}
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int default_apic_id_valid(int apicid)
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{
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return (apicid < 255);
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}
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