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Date: Sun, 17 Feb 2008 10:56:47 +0100
From: Marcin Slusarz <marcin.slusarz@...il.com>
To: "Rafael J. Wysocki" <rjw@...k.pl>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
LKML <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...e.hu>,
Russell Leidich <rml@...gle.com>, Pavel Machek <pavel@...e.cz>,
Len Brown <lenb@...nel.org>
Subject: Re: 2.6.25-rc2-mm1: build failure (x86)
On Sun, Feb 17, 2008 at 02:37:09AM +0100, Rafael J. Wysocki wrote:
> On Saturday, 16 of February 2008, Marcin Slusarz wrote:
> > On Sat, Feb 16, 2008 at 03:09:49AM -0800, Andrew Morton wrote:
> > > On Sat, 16 Feb 2008 11:59:07 +0100 Marcin Slusarz <marcin.slusarz@...il.com> wrote:
> > >
> > > > arch/x86/kernel/built-in.o: In function `amd_smp_thermal_interrupt':
> > > > (.text+0xe03b): undefined reference to `mce_log_therm_throt_event'
> > > > arch/x86/kernel/built-in.o: In function `acpi_save_state_mem':
> > > > (.text+0x12239): undefined reference to `setup_trampoline'
> > > >
> > > > #
> > > > # Automatically generated make config: don't edit
> > > > # Linux kernel version: 2.6.25-rc2-mm1
> > > > # Sat Feb 16 11:32:49 2008
> > >
> > > ho hum, thanks. I think I'll drop x86-amd-thermal-interrupt-support.patch.
> > > I don't think it's the final version anwyay.
> > >
> > Ok, I had to revert x86-remove-pt_regs-arg-from-smp_thermal_interrupt before x86-amd-thermal-interrupt-support.
> >
> > Second error vanished when I reverted "suspend: wakeup code in C".
>
> The appended patch should fix the second error.
Yes, it did.
> Thanks,
> Rafael
>
> ---
> On x86-64 the CPU trampoline code is now used while waking up from ACPI
> suspend to RAM. For this reason, make it depend on
> (64BIT && ACPI_SLEEP) as well as on SMP, move the relevant declarations
> to a separate header and move the definition of setup_trampoline() from
> smpboot_64.c .
>
> Signed-off-by: Rafael J. Wysocki <rjw@...k.pl>
> ---
> arch/x86/Kconfig | 2 +-
> arch/x86/kernel/acpi/sleep.c | 1 -
> arch/x86/kernel/acpi/sleep.h | 3 ++-
> arch/x86/kernel/e820_64.c | 5 +++--
> arch/x86/kernel/setup_64.c | 16 ++++++++++++++++
> arch/x86/kernel/smpboot_64.c | 23 ++---------------------
> include/asm-x86/smp_64.h | 2 --
> include/asm-x86/trampoline.h | 18 ++++++++++++++++++
> 8 files changed, 42 insertions(+), 28 deletions(-)
>
> Index: linux-2.6.25-rc2-mm1/arch/x86/Kconfig
> ===================================================================
> --- linux-2.6.25-rc2-mm1.orig/arch/x86/Kconfig
> +++ linux-2.6.25-rc2-mm1/arch/x86/Kconfig
> @@ -180,7 +180,7 @@ config X86_BIOS_REBOOT
>
> config X86_TRAMPOLINE
> bool
> - depends on X86_SMP || (X86_VOYAGER && SMP)
> + depends on X86_SMP || (X86_VOYAGER && SMP) || (64BIT && ACPI_SLEEP)
> default y
>
> config KTIME_SCALAR
> Index: linux-2.6.25-rc2-mm1/arch/x86/kernel/e820_64.c
> ===================================================================
> --- linux-2.6.25-rc2-mm1.orig/arch/x86/kernel/e820_64.c
> +++ linux-2.6.25-rc2-mm1/arch/x86/kernel/e820_64.c
> @@ -27,6 +27,7 @@
> #include <asm/setup.h>
> #include <asm/sections.h>
> #include <asm/kdebug.h>
> +#include <asm/trampoline.h>
>
> struct e820map e820;
>
> @@ -58,8 +59,8 @@ struct early_res {
> };
> static struct early_res early_res[MAX_EARLY_RES] __initdata = {
> { 0, PAGE_SIZE, "BIOS data page" }, /* BIOS data page */
> -#ifdef CONFIG_SMP
> - { SMP_TRAMPOLINE_BASE, SMP_TRAMPOLINE_BASE + 2*PAGE_SIZE, "SMP_TRAMPOLINE" },
> +#ifdef CONFIG_X86_TRAMPOLINE
> + { TRAMPOLINE_BASE, TRAMPOLINE_BASE + 2 * PAGE_SIZE, "TRAMPOLINE" },
> #endif
> {}
> };
> Index: linux-2.6.25-rc2-mm1/arch/x86/kernel/smpboot_64.c
> ===================================================================
> --- linux-2.6.25-rc2-mm1.orig/arch/x86/kernel/smpboot_64.c
> +++ linux-2.6.25-rc2-mm1/arch/x86/kernel/smpboot_64.c
> @@ -59,6 +59,7 @@
> #include <asm/irq.h>
> #include <asm/hw_irq.h>
> #include <asm/numa.h>
> +#include <asm/trampoline.h>
>
> /* Number of siblings per CPU package */
> int smp_num_siblings = 1;
> @@ -96,13 +97,6 @@ EXPORT_PER_CPU_SYMBOL(cpu_sibling_map);
> DEFINE_PER_CPU(cpumask_t, cpu_core_map);
> EXPORT_PER_CPU_SYMBOL(cpu_core_map);
>
> -/*
> - * Trampoline 80x86 program as an array.
> - */
> -
> -extern const unsigned char trampoline_data[];
> -extern const unsigned char trampoline_end[];
> -
> /* State of each CPU */
> DEFINE_PER_CPU(int, cpu_state) = { 0 };
>
> @@ -127,19 +121,6 @@ struct task_struct *idle_thread_array[NR
>
>
> /*
> - * Currently trivial. Write the real->protected mode
> - * bootstrap into the page concerned. The caller
> - * has made sure it's suitably aligned.
> - */
> -
> -unsigned long __cpuinit setup_trampoline(void)
> -{
> - void *tramp = __va(SMP_TRAMPOLINE_BASE);
> - memcpy(tramp, trampoline_data, trampoline_end - trampoline_data);
> - return virt_to_phys(tramp);
> -}
> -
> -/*
> * The bootstrap kernel entry code has set these up. Save them for
> * a given CPU
> */
> @@ -690,7 +671,7 @@ do_rest:
> Dprintk("CPU has booted.\n");
> } else {
> boot_error = 1;
> - if (*((volatile unsigned char *)phys_to_virt(SMP_TRAMPOLINE_BASE))
> + if (*((unsigned char *)phys_to_virt(TRAMPOLINE_BASE))
> == 0xA5)
> /* trampoline started but...? */
> printk("Stuck ??\n");
> Index: linux-2.6.25-rc2-mm1/include/asm-x86/smp_64.h
> ===================================================================
> --- linux-2.6.25-rc2-mm1.orig/include/asm-x86/smp_64.h
> +++ linux-2.6.25-rc2-mm1/include/asm-x86/smp_64.h
> @@ -47,8 +47,6 @@ static inline int cpu_present_to_apicid(
>
> #ifdef CONFIG_SMP
>
> -#define SMP_TRAMPOLINE_BASE 0x6000
> -
> extern int __cpu_disable(void);
> extern void __cpu_die(unsigned int cpu);
> extern void prefill_possible_map(void);
> Index: linux-2.6.25-rc2-mm1/arch/x86/kernel/acpi/sleep.h
> ===================================================================
> --- linux-2.6.25-rc2-mm1.orig/arch/x86/kernel/acpi/sleep.h
> +++ linux-2.6.25-rc2-mm1/arch/x86/kernel/acpi/sleep.h
> @@ -2,6 +2,8 @@
> * Variables and functions used by the code in sleep.c
> */
>
> +#include <asm/trampoline.h>
> +
> extern char wakeup_code_start, wakeup_code_end;
>
> extern unsigned long saved_video_mode;
> @@ -13,5 +15,4 @@ extern int wakeup_pmode_return;
> extern char swsusp_pg_dir[PAGE_SIZE];
>
> extern unsigned long acpi_copy_wakeup_routine(unsigned long);
> -extern unsigned long setup_trampoline(void);
> extern void wakeup_long64(void);
> Index: linux-2.6.25-rc2-mm1/arch/x86/kernel/setup_64.c
> ===================================================================
> --- linux-2.6.25-rc2-mm1.orig/arch/x86/kernel/setup_64.c
> +++ linux-2.6.25-rc2-mm1/arch/x86/kernel/setup_64.c
> @@ -66,6 +66,7 @@
> #include <asm/mce.h>
> #include <asm/ds.h>
> #include <asm/topology.h>
> +#include <asm/trampoline.h>
>
> #ifdef CONFIG_PARAVIRT
> #include <asm/paravirt.h>
> @@ -1184,3 +1185,18 @@ const struct seq_operations cpuinfo_op =
> .stop = c_stop,
> .show = show_cpuinfo,
> };
> +
> +#ifdef CONFIG_X86_TRAMPOLINE
> +/*
> + * Currently trivial. Write the real->protected mode
> + * bootstrap into the page concerned. The caller
> + * has made sure it's suitably aligned.
> + */
> +
> +unsigned long setup_trampoline(void)
> +{
> + void *tramp = __va(TRAMPOLINE_BASE);
> + memcpy(tramp, trampoline_data, trampoline_end - trampoline_data);
> + return virt_to_phys(tramp);
> +}
> +#endif /* CONFIG_X86_TRAMPOLINE */
> Index: linux-2.6.25-rc2-mm1/arch/x86/kernel/acpi/sleep.c
> ===================================================================
> --- linux-2.6.25-rc2-mm1.orig/arch/x86/kernel/acpi/sleep.c
> +++ linux-2.6.25-rc2-mm1/arch/x86/kernel/acpi/sleep.c
> @@ -10,7 +10,6 @@
> #include <linux/dmi.h>
> #include <linux/cpumask.h>
>
> -#include <asm/smp.h>
> #include "realmode/wakeup.h"
> #include "sleep.h"
>
> Index: linux-2.6.25-rc2-mm1/include/asm-x86/trampoline.h
> ===================================================================
> --- /dev/null
> +++ linux-2.6.25-rc2-mm1/include/asm-x86/trampoline.h
> @@ -0,0 +1,18 @@
> +#ifndef __TRAMPOLINE_HEADER
> +#define __TRAMPOLINE_HEADER
> +
> +#ifndef __ASSEMBLY__
> +
> +#define TRAMPOLINE_BASE 0x6000
> +
> +/*
> + * Trampoline 80x86 program as an array.
> + */
> +extern const unsigned char trampoline_data[];
> +extern const unsigned char trampoline_end[];
> +
> +extern unsigned long setup_trampoline(void);
> +
> +#endif /* __ASSEMBLY__ */
> +
> +#endif /* __TRAMPOLINE_HEADER */
--
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