x86/platform/uv/BAU: Add APIC idt entry (151ad17f) · Commits · 戴 / test

BAU uses the old alloc_initr_gate90 method to setup its interrupt. This fails silently as the BAU vector is in the range of APIC vectors that are registered to the spurious interrupt handler. As a consequence BAU broadcasts are not handled, and the broadcast source CPU hangs. Update BAU to use new idt structure. Fixes: ("x86/idt: Move interrupt gate initialization to IDT code") Signed-off-by:

Andrew Banman <abanman@hpe.com> Signed-off-by:

Thomas Gleixner <tglx@linutronix.de> Acked-by:

Mike Travis <mike.travis@hpe.com> Cc: Dimitri Sivanich <sivanich@hpe.com> Cc: Russ Anderson <rja@hpe.com> Cc: stable@vger.kernel.org Cc: "H. Peter Anvin" <hpa@zytor.com> Link: https://lkml.kernel.org/r/1522188546-196177-1-git-send-email-abanman@hpe.com

arch/x86/include/asm/hw_irq.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -36,6 +36,7 @@ extern asmlinkage void kvm_posted_intr_wakeup_ipi(void);
		extern asmlinkage void kvm_posted_intr_nested_ipi(void);
		extern asmlinkage void error_interrupt(void);
		extern asmlinkage void irq_work_interrupt(void);
		extern asmlinkage void uv_bau_message_intr1(void);

		extern asmlinkage void spurious_interrupt(void);
		extern asmlinkage void thermal_interrupt(void);

arch/x86/kernel/idt.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -139,6 +139,9 @@ static const __initconst struct idt_data apic_idts[] = {
		# endif
		# ifdef CONFIG_IRQ_WORK
		INTG(IRQ_WORK_VECTOR, irq_work_interrupt),
		# endif
		#ifdef CONFIG_X86_UV
		INTG(UV_BAU_MESSAGE, uv_bau_message_intr1),
		#endif
		INTG(SPURIOUS_APIC_VECTOR, spurious_interrupt),
		INTG(ERROR_APIC_VECTOR, error_interrupt),

arch/x86/platform/uv/tlb_uv.c

+0 −2

Original line number	Diff line number	Diff line
		@@ -2255,8 +2255,6 @@ static int __init uv_bau_init(void)
		init_uvhub(uvhub, vector, uv_base_pnode);
		}

		alloc_intr_gate(vector, uv_bau_message_intr1);

		for_each_possible_blade(uvhub) {
		if (uv_blade_nr_possible_cpus(uvhub)) {
		unsigned long val;

Admin message