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Date: Mon, 21 Apr 2008 10:58:53 -0500
From: James Bottomley <James.Bottomley@...senPartnership.com>
To: Ingo Molnar <mingo@...e.hu>
Cc: Adrian Bunk <bunk@...nel.org>,
Alexey Starikovskiy <astarikovskiy@...e.de>,
tglx@...utronix.de, hpa@...or.com, linux-kernel@...r.kernel.org
Subject: Re: Voyager phys_cpu_present_map compile error
On Mon, 2008-04-21 at 14:00 +0200, Ingo Molnar wrote:
> * Adrian Bunk <bunk@...nel.org> wrote:
>
> > I shouldn't send bug reports at 3 in the morning...
> >
> > Attached is the .config for both Voyager build errors I reported.
>
> thanks, the three patches below should fix it.
>
> i ended up excluding Voyager configs from our test space some time ago
> (and VISWS as well - there's one more visws fix in x86.git), that's how
> this broke. These subarchitectures seem not to be used at all and the
> code wont boot on normal PCs. We could mark it BROKEN but the fix seems
> simple in any case.
The voyager pieces of this code look fine to me. I can't test at the
moment because we're having the carpets cleaned and I can't get down
into the cellar where the systems are, but I'll do so shortly.
James
> Ingo
>
> ---------------------->
> Subject: x86: voyager fix
> From: Ingo Molnar <mingo@...e.hu>
> Date: Mon Apr 21 13:39:53 CEST 2008
>
> Reported-by: Adrian Bunk <bunk@...nel.org>
> Signed-off-by: Ingo Molnar <mingo@...e.hu>
> ---
> arch/x86/Kconfig | 2 +-
> arch/x86/kernel/setup.c | 2 ++
> arch/x86/mach-voyager/voyager_smp.c | 17 -----------------
> 3 files changed, 3 insertions(+), 18 deletions(-)
>
> Index: linux-x86.q/arch/x86/Kconfig
> ===================================================================
> --- linux-x86.q.orig/arch/x86/Kconfig
> +++ linux-x86.q/arch/x86/Kconfig
> @@ -23,7 +23,7 @@ config X86
> select HAVE_KPROBES
> select HAVE_KRETPROBES
> select HAVE_KVM if ((X86_32 && !X86_VOYAGER && !X86_VISWS && !X86_NUMAQ) || X86_64)
> - select HAVE_ARCH_KGDB
> + select HAVE_ARCH_KGDB if !X86_VOYAGER
>
>
> config GENERIC_LOCKBREAK
> Index: linux-x86.q/arch/x86/kernel/setup.c
> ===================================================================
> --- linux-x86.q.orig/arch/x86/kernel/setup.c
> +++ linux-x86.q/arch/x86/kernel/setup.c
> @@ -21,8 +21,10 @@ EXPORT_SYMBOL(boot_cpu_physical_apicid);
> DEFINE_PER_CPU(u16, x86_cpu_to_apicid) = BAD_APICID;
> EXPORT_PER_CPU_SYMBOL(x86_cpu_to_apicid);
>
> +#ifndef CONFIG_X86_VOYAGER
> /* Bitmask of physically existing CPUs */
> physid_mask_t phys_cpu_present_map;
> +#endif
>
> #if defined(CONFIG_HAVE_SETUP_PER_CPU_AREA) && defined(CONFIG_SMP)
> /*
> Index: linux-x86.q/arch/x86/mach-voyager/voyager_smp.c
> ===================================================================
> --- linux-x86.q.orig/arch/x86/mach-voyager/voyager_smp.c
> +++ linux-x86.q/arch/x86/mach-voyager/voyager_smp.c
> @@ -208,11 +208,6 @@ static struct irq_chip vic_chip = {
> /* used to count up as CPUs are brought on line (starts at 0) */
> static int cpucount = 0;
>
> -/* steal a page from the bottom of memory for the trampoline and
> - * squirrel its address away here. This will be in kernel virtual
> - * space */
> -unsigned char *trampoline_base;
> -
> /* The per cpu profile stuff - used in smp_local_timer_interrupt */
> static DEFINE_PER_CPU(int, prof_multiplier) = 1;
> static DEFINE_PER_CPU(int, prof_old_multiplier) = 1;
> @@ -429,18 +424,6 @@ void __init smp_store_cpu_info(int id)
> identify_secondary_cpu(c);
> }
>
> -/* set up the trampoline and return the physical address of the code */
> -unsigned long __init setup_trampoline(void)
> -{
> - /* these two are global symbols in trampoline.S */
> - extern const __u8 trampoline_end[];
> - extern const __u8 trampoline_data[];
> -
> - memcpy(trampoline_base, trampoline_data,
> - trampoline_end - trampoline_data);
> - return virt_to_phys(trampoline_base);
> -}
> -
> /* Routine initially called when a non-boot CPU is brought online */
> static void __init start_secondary(void *unused)
> {
>
> Subject: x86: Drop duplicate from setup.c
> From: Alexey Starikovskiy <astarikovskiy@...e.de>
> Date: Mon, 21 Apr 2008 13:31:55 +0400
>
> Signed-off-by: Alexey Starikovskiy <astarikovskiy@...e.de>
> Signed-off-by: Ingo Molnar <mingo@...e.hu>
> ---
> arch/x86/kernel/setup.c | 2 --
> 1 file changed, 2 deletions(-)
>
> Index: linux-x86.q/arch/x86/kernel/setup.c
> ===================================================================
> --- linux-x86.q.orig/arch/x86/kernel/setup.c
> +++ linux-x86.q/arch/x86/kernel/setup.c
> @@ -18,8 +18,6 @@ unsigned disabled_cpus __cpuinitdata;
> unsigned int boot_cpu_physical_apicid = -1U;
> EXPORT_SYMBOL(boot_cpu_physical_apicid);
>
> -physid_mask_t phys_cpu_present_map;
> -
> DEFINE_PER_CPU(u16, x86_cpu_to_apicid) = BAD_APICID;
> EXPORT_PER_CPU_SYMBOL(x86_cpu_to_apicid);
>
> Subject: x86: fix compilation error in VisWS
> From: Alexey Starikovskiy <astarikovskiy@...e.de>
> Date: Mon, 21 Apr 2008 13:32:01 +0400
>
> Signed-off-by: Alexey Starikovskiy <astarikovskiy@...e.de>
> Signed-off-by: Ingo Molnar <mingo@...e.hu>
> ---
> arch/x86/mach-visws/mpparse.c | 15 +--------------
> 1 file changed, 1 insertion(+), 14 deletions(-)
>
> Index: linux-x86.q/arch/x86/mach-visws/mpparse.c
> ===================================================================
> --- linux-x86.q.orig/arch/x86/mach-visws/mpparse.c
> +++ linux-x86.q/arch/x86/mach-visws/mpparse.c
> @@ -11,22 +11,9 @@
> /* Have we found an MP table */
> int smp_found_config;
>
> -/*
> - * Various Linux-internal data structures created from the
> - * MP-table.
> - */
> -int apic_version [MAX_APICS];
> -
> int pic_mode;
> -unsigned long mp_lapic_addr;
> -
> -/* Processor that is doing the boot up */
> -unsigned int boot_cpu_physical_apicid = -1U;
> -
> -/* Bitmask of physically existing CPUs */
> -physid_mask_t phys_cpu_present_map;
>
> -unsigned int __initdata maxcpus = NR_CPUS;
> +extern unsigned int __cpuinitdata maxcpus;
>
> /*
> * The Visual Workstation is Intel MP compliant in the hardware
--
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