66c7ceb47f
irq_ctx_init() crashes hard on page allocation failures. While that's ok during early boot, it's just wrong in the CPU hotplug bringup code. Check the page allocation failure and return -ENOMEM and handle it at the call sites. On early boot the only way out is to BUG(), but on CPU hotplug there is no reason to crash, so just abort the operation. Rename the function to something more sensible while at it. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Alison Schofield <alison.schofield@intel.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andy Lutomirski <luto@kernel.org> Cc: Anshuman Khandual <anshuman.khandual@arm.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Juergen Gross <jgross@suse.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Nicolai Stange <nstange@suse.de> Cc: Pu Wen <puwen@hygon.cn> Cc: Sean Christopherson <sean.j.christopherson@intel.com> Cc: Shaokun Zhang <zhangshaokun@hisilicon.com> Cc: Stefano Stabellini <sstabellini@kernel.org> Cc: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> Cc: x86-ml <x86@kernel.org> Cc: xen-devel@lists.xenproject.org Cc: Yazen Ghannam <yazen.ghannam@amd.com> Cc: Yi Wang <wang.yi59@zte.com.cn> Cc: Zhenzhong Duan <zhenzhong.duan@oracle.com> Link: https://lkml.kernel.org/r/20190414160146.089060584@linutronix.de
58 lines
1.5 KiB
C
58 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_X86_IRQ_H
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#define _ASM_X86_IRQ_H
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/*
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* (C) 1992, 1993 Linus Torvalds, (C) 1997 Ingo Molnar
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*
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* IRQ/IPI changes taken from work by Thomas Radke
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* <tomsoft@informatik.tu-chemnitz.de>
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*/
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#include <asm/apicdef.h>
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#include <asm/irq_vectors.h>
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static inline int irq_canonicalize(int irq)
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{
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return ((irq == 2) ? 9 : irq);
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}
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#ifdef CONFIG_X86_32
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extern int irq_init_percpu_irqstack(unsigned int cpu);
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#else
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static inline int irq_init_percpu_irqstack(unsigned int cpu) { return 0; }
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#endif
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#define __ARCH_HAS_DO_SOFTIRQ
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struct irq_desc;
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extern void fixup_irqs(void);
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#ifdef CONFIG_HAVE_KVM
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extern void kvm_set_posted_intr_wakeup_handler(void (*handler)(void));
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extern __visible void smp_kvm_posted_intr_ipi(struct pt_regs *regs);
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extern __visible void smp_kvm_posted_intr_wakeup_ipi(struct pt_regs *regs);
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extern __visible void smp_kvm_posted_intr_nested_ipi(struct pt_regs *regs);
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#endif
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extern void (*x86_platform_ipi_callback)(void);
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extern void native_init_IRQ(void);
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extern bool handle_irq(struct irq_desc *desc, struct pt_regs *regs);
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extern __visible unsigned int do_IRQ(struct pt_regs *regs);
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extern void init_ISA_irqs(void);
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extern void __init init_IRQ(void);
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#ifdef CONFIG_X86_LOCAL_APIC
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void arch_trigger_cpumask_backtrace(const struct cpumask *mask,
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bool exclude_self);
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extern __visible void smp_x86_platform_ipi(struct pt_regs *regs);
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#define arch_trigger_cpumask_backtrace arch_trigger_cpumask_backtrace
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#endif
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#endif /* _ASM_X86_IRQ_H */
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