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ae03900105
On PVH, PVHVM, at failure in the VCPUOP_register_vcpu_info hypercall we limit the number of cpus to to MAX_VIRT_CPUS. However, if this failure had occurred for a cpu beyond MAX_VIRT_CPUS, we continue to function with > MAX_VIRT_CPUS. This leads to problems at the next save/restore cycle when there are > MAX_VIRT_CPUS threads going into stop_machine() but coming back up there's valid state for only the first MAX_VIRT_CPUS. This patch pulls the excess CPUs down via cpu_down(). Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Signed-off-by: Ankur Arora <ankur.a.arora@oracle.com> Signed-off-by: Juergen Gross <jgross@suse.com>
42 lines
1.1 KiB
C
42 lines
1.1 KiB
C
#ifndef _XEN_SMP_H
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#ifdef CONFIG_SMP
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extern void xen_send_IPI_mask(const struct cpumask *mask,
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int vector);
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extern void xen_send_IPI_mask_allbutself(const struct cpumask *mask,
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int vector);
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extern void xen_send_IPI_allbutself(int vector);
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extern void xen_send_IPI_all(int vector);
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extern void xen_send_IPI_self(int vector);
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extern int xen_smp_intr_init(unsigned int cpu);
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extern void xen_smp_intr_free(unsigned int cpu);
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int xen_smp_intr_init_pv(unsigned int cpu);
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void xen_smp_intr_free_pv(unsigned int cpu);
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void xen_smp_cpus_done(unsigned int max_cpus);
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void xen_smp_send_reschedule(int cpu);
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void xen_smp_send_call_function_ipi(const struct cpumask *mask);
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void xen_smp_send_call_function_single_ipi(int cpu);
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struct xen_common_irq {
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int irq;
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char *name;
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};
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#else /* CONFIG_SMP */
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static inline int xen_smp_intr_init(unsigned int cpu)
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{
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return 0;
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}
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static inline void xen_smp_intr_free(unsigned int cpu) {}
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static inline int xen_smp_intr_init_pv(unsigned int cpu)
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{
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return 0;
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}
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static inline void xen_smp_intr_free_pv(unsigned int cpu) {}
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#endif /* CONFIG_SMP */
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#endif
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