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Date: Mon, 25 Oct 2010 09:59:08 -0700 From: Yinghai Lu <yinghai@...nel.org> To: Thomas Gleixner <tglx@...utronix.de>, "H. Peter Anvin" <hpa@...or.com> CC: Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org Subject: [PATCH] x86, ioapic: Don't map ioapic regs two times Normal path: When mptable or madt is used, and ioapic address is correct, We already set mapping in mp_register_ioapic(). So only set_fixmap for dummy case. Signed-off-by: Yinghai Lu <yinghai@...nel.org> --- arch/x86/kernel/apic/io_apic.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) Index: linux-2.6/arch/x86/kernel/apic/io_apic.c =================================================================== --- linux-2.6.orig/arch/x86/kernel/apic/io_apic.c +++ linux-2.6/arch/x86/kernel/apic/io_apic.c @@ -3980,11 +3980,11 @@ fake_ioapic_page: #endif ioapic_phys = (unsigned long)alloc_bootmem_pages(PAGE_SIZE); ioapic_phys = __pa(ioapic_phys); + set_fixmap_nocache(idx, ioapic_phys); + apic_printk(APIC_VERBOSE, "mapped dummy IOAPIC to %08lx (%08lx)\n", + __fix_to_virt(idx) + (ioapic_phys & ~PAGE_MASK), + ioapic_phys); } - set_fixmap_nocache(idx, ioapic_phys); - apic_printk(APIC_VERBOSE, "mapped IOAPIC to %08lx (%08lx)\n", - __fix_to_virt(idx) + (ioapic_phys & ~PAGE_MASK), - ioapic_phys); idx++; ioapic_res->start = ioapic_phys; -- 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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