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authorThomas Gleixner <tglx@linutronix.de>2019-04-14 18:00:04 +0200
committerBorislav Petkov <bp@suse.de>2019-04-17 15:31:42 +0200
commit66c7ceb47f628c8bd4f84a6d01c2725ded6a342d (patch)
treeac986c171da0e8e7df523d8410e66c68ac749d14 /arch/x86/kernel/irqinit.c
parent451f743a64e1cf979f5fe21a1b2a015feb559f72 (diff)
downloadlinux-66c7ceb47f628c8bd4f84a6d01c2725ded6a342d.tar.bz2
x86/irq/32: Handle irq stack allocation failure proper
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
Diffstat (limited to 'arch/x86/kernel/irqinit.c')
-rw-r--r--arch/x86/kernel/irqinit.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/irqinit.c b/arch/x86/kernel/irqinit.c
index 26b5cb5386b9..16919a9671fa 100644
--- a/arch/x86/kernel/irqinit.c
+++ b/arch/x86/kernel/irqinit.c
@@ -91,7 +91,7 @@ void __init init_IRQ(void)
for (i = 0; i < nr_legacy_irqs(); i++)
per_cpu(vector_irq, 0)[ISA_IRQ_VECTOR(i)] = irq_to_desc(i);
- irq_ctx_init(smp_processor_id());
+ BUG_ON(irq_init_percpu_irqstack(smp_processor_id()));
x86_init.irqs.intr_init();
}