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95 lines
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From: Ingo Molnar <mingo@elte.hu>
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Subject: Re: [PATCH 3/6] x86: ifdef INTR_REMAP code out
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Date: Mon, 14 Feb 2011 12:02:31 +0100
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Lines: 41
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Message-ID: <20110214110231.GB7140@elte.hu>
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References: <1297677612-12405-1-git-send-email-henne@nachtwindheim.de>
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<1297677612-12405-3-git-send-email-henne@nachtwindheim.de>
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Cc: mingo@readhat.com, tglx@linutronix.de, hpa@zytor.com,
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x86@kernel.org, tj@kernel.org, yinghai@kernel.org,
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ak@linux.intel.com, robert.richter@amd.com,
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linux-kernel@vger.kernel.org
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To: Henrik Kretzschmar <henne@nachtwindheim.de>
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from <mingo@elte.hu>; Mon, 14 Feb 2011 12:02:34 +0100
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* Henrik Kretzschmar <henne@nachtwindheim.de> wrote:
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> +#ifdef CONFIG_INTR_REMAP
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> + struct IO_APIC_route_entry **ioapic_entries = NULL;
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> +
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> if (intr_remapping_enabled) {
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> ioapic_entries = alloc_ioapic_entries();
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> if (!ioapic_entries) {
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> @@ -2133,6 +2136,7 @@ static int lapic_resume(struct sys_device *dev)
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> mask_IO_APIC_setup(ioapic_entries);
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> legacy_pic->mask_all();
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> }
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> +#endif
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>
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> if (x2apic_mode)
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> enable_x2apic();
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> @@ -2173,6 +2177,7 @@ static int lapic_resume(struct sys_device *dev)
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> apic_write(APIC_ESR, 0);
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> apic_read(APIC_ESR);
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>
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> +#ifdef CONFIG_INTR_REMAP
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> if (intr_remapping_enabled) {
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> reenable_intr_remapping(x2apic_mode);
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> legacy_pic->restore_mask();
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> @@ -2180,6 +2185,7 @@ static int lapic_resume(struct sys_device *dev)
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> free_ioapic_entries(ioapic_entries);
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> }
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> restore:
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> +#endif
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Hm, these bits should be factored out in a cleaner fashion - by adding helper
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functions, etc. The x2apic code's integration into the lapic code was done in a
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pretty ugly fashion so it's not your fault - but if we want to reintroduce UP-IOAPIC
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we need to do it cleanly.
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Do you still want to do it? :-)
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Thanks,
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Ingo
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