Merge tag 'for-linus-5.10b-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip (4ccf7a01) · Commits · 戴 / test

Pull xen fix from Juergen Gross: "A single fix for avoiding WARN splats when booting a Xen guest with nosmt" * tag 'for-linus-5.10b-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: x86/xen: don't unbind uninitialized lock_kicker_irq

arch/x86/xen/spinlock.c

+11 −1

Original line number	Diff line number	Diff line
		@@ -93,10 +93,20 @@ void xen_init_lock_cpu(int cpu)

		void xen_uninit_lock_cpu(int cpu)
		{
		int irq;

		if (!xen_pvspin)
		return;

		unbind_from_irqhandler(per_cpu(lock_kicker_irq, cpu), NULL);
		/*
		* When booting the kernel with 'mitigations=auto,nosmt', the secondary
		* CPUs are not activated, and lock_kicker_irq is not initialized.
		*/
		irq = per_cpu(lock_kicker_irq, cpu);
		if (irq == -1)
		return;

		unbind_from_irqhandler(irq, NULL);
		per_cpu(lock_kicker_irq, cpu) = -1;
		kfree(per_cpu(irq_name, cpu));
		per_cpu(irq_name, cpu) = NULL;

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