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Date: Tue, 19 Feb 2008 10:51:35 -0800
From: "Russell Leidich" <rml@...gle.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>, "Pavel Machek" <pavel@...e.cz>,
"Len Brown" <lenb@...nel.org>,
"Marcin Slusarz" <marcin.slusarz@...il.com>
Subject: Re: 2.6.25-rc2-mm1: build failure (x86)
On Feb 17, 2008 1:56 AM, Marcin Slusarz <marcin.slusarz@...il.com> wrote:
> 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.
Thanks for fixing this, Rafael.
I must admit that I'm puzzled as to why this should fail, since my
Kconfig change forces K8_NB=y when X86_MCE_AMD=y -- unless this is a
discussion of my earlier patch, which did not include this change.
Anyhow, I'm pleased that you've created a fix which seems to solve the problem.
> 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 */
>
--
Russell Leidich
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