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Revert "x86: don't compile vsmp_64 for 32bit"

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Partial revert of commit 129d8bc828
titled 'x86: don't compile vsmp_64 for 32bit'

Commit reverted to compile vsmp_64.c if CONFIG_X86_64 is defined,
since is_vsmp_box() needs to indicate that TSCs are not synchronized, and
hence, not a valid time source, even when CONFIG_X86_VSMP is not defined.

Signed-off-by: Ravikiran Thirumalai <kiran@scalex86.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: shai@scalex86.org
LKML-Reference: <20090324061429.GH7278@localdomain>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ravikiran G Thirumalai 2009-03-23 23:14:29 -07:00 committed by Ingo Molnar
parent e06b1b56f9
commit 70511134f6
4 changed files with 14 additions and 4 deletions
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2
arch/x86/include/asm/apic.h
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@ -75,7 +75,7 @@ static inline void default_inquire_remote_apic(int apicid)
#define setup_secondary_clock setup_secondary_APIC_clock #define setup_secondary_clock setup_secondary_APIC_clock
#endif #endif
#ifdef CONFIG_X86_VSMP #ifdef CONFIG_X86_64
extern int is_vsmp_box(void); extern int is_vsmp_box(void);
#else #else
static inline int is_vsmp_box(void) static inline int is_vsmp_box(void)

2
arch/x86/include/asm/setup.h
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@ -64,7 +64,7 @@ extern void x86_quirk_time_init(void);
#include <asm/bootparam.h> #include <asm/bootparam.h>
/* Interrupt control for vSMPowered x86_64 systems */ /* Interrupt control for vSMPowered x86_64 systems */
#ifdef CONFIG_X86_VSMP #ifdef CONFIG_X86_64
void vsmp_init(void); void vsmp_init(void);
#else #else
static inline void vsmp_init(void) { } static inline void vsmp_init(void) { }

2
arch/x86/kernel/Makefile
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@ -70,7 +70,6 @@ obj-$(CONFIG_FUNCTION_GRAPH_TRACER) += ftrace.o
obj-$(CONFIG_KEXEC) += machine_kexec_$(BITS).o obj-$(CONFIG_KEXEC) += machine_kexec_$(BITS).o
obj-$(CONFIG_KEXEC) += relocate_kernel_$(BITS).o crash.o obj-$(CONFIG_KEXEC) += relocate_kernel_$(BITS).o crash.o
obj-$(CONFIG_CRASH_DUMP) += crash_dump_$(BITS).o obj-$(CONFIG_CRASH_DUMP) += crash_dump_$(BITS).o
obj-$(CONFIG_X86_VSMP) += vsmp_64.o
obj-$(CONFIG_KPROBES) += kprobes.o obj-$(CONFIG_KPROBES) += kprobes.o
obj-$(CONFIG_MODULES) += module_$(BITS).o obj-$(CONFIG_MODULES) += module_$(BITS).o
obj-$(CONFIG_EFI) += efi.o efi_$(BITS).o efi_stub_$(BITS).o obj-$(CONFIG_EFI) += efi.o efi_$(BITS).o efi_stub_$(BITS).o
@ -120,4 +119,5 @@ ifeq ($(CONFIG_X86_64),y)
obj-$(CONFIG_AMD_IOMMU) += amd_iommu_init.o amd_iommu.o obj-$(CONFIG_AMD_IOMMU) += amd_iommu_init.o amd_iommu.o
obj-$(CONFIG_PCI_MMCONFIG) += mmconf-fam10h_64.o obj-$(CONFIG_PCI_MMCONFIG) += mmconf-fam10h_64.o
obj-y += vsmp_64.o
endif endif

12
arch/x86/kernel/vsmp_64.c
View File

@ -22,7 +22,7 @@
#include <asm/paravirt.h> #include <asm/paravirt.h>
#include <asm/setup.h> #include <asm/setup.h>
#ifdef CONFIG_PARAVIRT #if defined CONFIG_PCI && defined CONFIG_PARAVIRT
/* /*
* Interrupt control on vSMPowered systems: * Interrupt control on vSMPowered systems:
* ~AC is a shadow of IF. If IF is 'on' AC should be 'off' * ~AC is a shadow of IF. If IF is 'on' AC should be 'off'
@ -114,6 +114,7 @@ static void __init set_vsmp_pv_ops(void)
} }
#endif #endif
#ifdef CONFIG_PCI
static int is_vsmp = -1; static int is_vsmp = -1;
static void __init detect_vsmp_box(void) static void __init detect_vsmp_box(void)
@ -139,6 +140,15 @@ int is_vsmp_box(void)
} }
} }
#else
static void __init detect_vsmp_box(void)
{
}
int is_vsmp_box(void)
{
return 0;
}
#endif
void __init vsmp_init(void) void __init vsmp_init(void)
{ {
detect_vsmp_box(); detect_vsmp_box();