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Date: Mon, 11 Sep 2006 16:37:34 -0700 From: Jeremy Fitzhardinge <jeremy@...p.org> To: Andrew Morton <akpm@...l.org> CC: Andi Kleen <ak@...e.de>, Ingo Molnar <mingo@...e.hu>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org> Subject: Re: [PATCH] i386-pda: Initialize the PDA early, before any C code runs. Jeremy Fitzhardinge wrote: > Not sure, but I think this replicates the behaviour of the original > code (ie, INIT_THREAD_INFO initializes cpu to 0, so smp_processor_id > will return 0). Hm, Voyager will probably need a little patch to > update the the PDA cpu_number properly in smp_setup_processor_id(). Something like this, perhaps: Subject: set the boot CPU number in the boot_pda Signed-off-by: Jeremy Fitzhardinge <jeremy@...source.com> diff -r 97aa2356d521 arch/i386/mach-voyager/voyager_smp.c --- a/arch/i386/mach-voyager/voyager_smp.c Mon Sep 11 14:52:11 2006 -0700 +++ b/arch/i386/mach-voyager/voyager_smp.c Mon Sep 11 16:34:09 2006 -0700 @@ -28,6 +28,7 @@ #include <asm/pgalloc.h> #include <asm/tlbflush.h> #include <asm/arch_hooks.h> +#include <asm/pda.h> /* TLB state -- visible externally, indexed physically */ DEFINE_PER_CPU(struct tlb_state, cpu_tlbstate) ____cacheline_aligned = { &init_mm, 0 }; @@ -1949,4 +1950,5 @@ smp_setup_processor_id(void) smp_setup_processor_id(void) { current_thread_info()->cpu = hard_smp_processor_id(); -} + write_pda(cpu_number, hard_smp_processor_id()); +} - 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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