From d0d0f7432c9cbd52cb2f31d499f8292b13a7ecac Mon Sep 17 00:00:00 2001 From: Matt Mackall Date: Thu, 9 Oct 2008 12:41:50 -0500 Subject: x86: remove magic number from ACPI sleep stack buffer x86_64 SMP suspend to RAM uses a 10k temporary stack for saving the kernel state, but only 4k of it is used. Shrink it to 4k. Signed-off-by: Matt Mackall Acked-by: Pavel Machek Signed-off-by: Len Brown --- arch/x86/kernel/acpi/sleep.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/x86') diff --git a/arch/x86/kernel/acpi/sleep.c b/arch/x86/kernel/acpi/sleep.c index 426e5d91b63..29cf3403abe 100644 --- a/arch/x86/kernel/acpi/sleep.c +++ b/arch/x86/kernel/acpi/sleep.c @@ -97,7 +97,7 @@ int acpi_save_state_mem(void) #else /* CONFIG_64BIT */ header->trampoline_segment = setup_trampoline() >> 4; #ifdef CONFIG_SMP - stack_start.sp = temp_stack + 4096; + stack_start.sp = temp_stack + sizeof(temp_stack); #endif initial_code = (unsigned long)wakeup_long64; saved_magic = 0x123456789abcdef0; -- cgit v1.2.3 From 5000cadcf3188e935dae28c4fc7e24639704ea55 Mon Sep 17 00:00:00 2001 From: Matt Mackall Date: Thu, 9 Oct 2008 11:56:21 -0500 Subject: x86: trim ACPI sleep stack buffer x86_64 SMP suspend to RAM uses a 10k temporary stack for saving the kernel state, but only 4k of it is used. Shrink it to 4k. Signed-off-by: Matt Mackall Signed-off-by: Len Brown --- arch/x86/kernel/acpi/sleep.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/x86') diff --git a/arch/x86/kernel/acpi/sleep.c b/arch/x86/kernel/acpi/sleep.c index 29cf3403abe..55d10cbe65b 100644 --- a/arch/x86/kernel/acpi/sleep.c +++ b/arch/x86/kernel/acpi/sleep.c @@ -21,7 +21,7 @@ unsigned long acpi_realmode_flags; static unsigned long acpi_realmode; #if defined(CONFIG_SMP) && defined(CONFIG_64BIT) -static char temp_stack[10240]; +static char temp_stack[4096]; #endif /** -- cgit v1.2.3 From 1339c367a842a9fc34b8fcfa1abadb07b11848ad Mon Sep 17 00:00:00 2001 From: Pavel Vasilyev Date: Wed, 15 Oct 2008 17:33:48 -0400 Subject: fix CONFIG_MMCONFIG=n build warning arch/x86/kernel/acpi/boot.c:100: warning: 'acpi_mcfg_64bit_base_addr' defined but not used http://bugzilla.kernel.org/show_bug.cgi?id=11743 Signed-off-by: Pavel Vasilyev Signed-off-by: Len Brown --- arch/x86/kernel/acpi/boot.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'arch/x86') diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index c102af85df9..0c2742f8c4d 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -97,7 +97,6 @@ static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE; #warning ACPI uses CMPXCHG, i486 and later hardware #endif -static int acpi_mcfg_64bit_base_addr __initdata = FALSE; /* -------------------------------------------------------------------------- Boot-time Configuration @@ -156,6 +155,9 @@ char *__init __acpi_map_table(unsigned long phys, unsigned long size) } #ifdef CONFIG_PCI_MMCONFIG + +static int acpi_mcfg_64bit_base_addr __initdata = FALSE; + /* The physical address of the MMCONFIG aperture. Set from ACPI tables. */ struct acpi_mcfg_allocation *pci_mmcfg_config; int pci_mmcfg_config_num; -- cgit v1.2.3