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Date: Fri, 06 Feb 2009 22:35:24 -0500 (EST) From: Len Brown <lenb@...nel.org> To: Yinghai Lu <yinghai@...nel.org> Cc: Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>, "H. Peter Anvin" <hpa@...or.com>, Andrew Morton <akpm@...ux-foundation.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, linux-acpi@...r.kernel.org Subject: Re: [PATCH] x86: find nr_irqs_gsi with mp_ioapic_routing > Impact: find right nr_irqs_gsi on some systems. > > one system has gap between gsi. > [ 0.000000] ACPI: IOAPIC (id[0x04] address[0xfec00000] gsi_base[0]) > [ 0.000000] IOAPIC[0]: apic_id 4, version 0, address 0xfec00000, GSI 0-23 > [ 0.000000] ACPI: IOAPIC (id[0x05] address[0xfeafd000] gsi_base[48]) > [ 0.000000] IOAPIC[1]: apic_id 5, version 0, address 0xfeafd000, GSI 48-54 > [ 0.000000] ACPI: IOAPIC (id[0x06] address[0xfeafc000] gsi_base[56]) > [ 0.000000] IOAPIC[2]: apic_id 6, version 0, address 0xfeafc000, GSI 56-62 > ... > [ 0.000000] nr_irqs_gsi: 38 I've never seen gaps in GSIs. I've never seen IOAPICs with 7 redirection table entries. This system looks quite broken even before the probe for nr_irqs_gsi. Do you have more information on it? thanks, -Len -- Intel Open Source Technology Center -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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