From b4e0409a36f4533770a12095bde2a574a08a319e Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Thu, 21 Feb 2008 13:45:16 +0100 Subject: x86: check vmlinux limits, 64-bit these build-time and link-time checks would have prevented the vmlinux size regression. Signed-off-by: Ingo Molnar --- arch/x86/kernel/vmlinux_64.lds.S | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'arch/x86/kernel/vmlinux_64.lds.S') diff --git a/arch/x86/kernel/vmlinux_64.lds.S b/arch/x86/kernel/vmlinux_64.lds.S index fab132299735..4c369451007b 100644 --- a/arch/x86/kernel/vmlinux_64.lds.S +++ b/arch/x86/kernel/vmlinux_64.lds.S @@ -247,3 +247,9 @@ SECTIONS DWARF_DEBUG } + +/* + * Build-time check on the image size: + */ +ASSERT((_end - _text <= KERNEL_IMAGE_SIZE), + "kernel image bigger than KERNEL_IMAGE_SIZE") -- cgit v1.2.2 From 03ae5768b6110ebaa97dc3e7abf1c3d8bec5f874 Mon Sep 17 00:00:00 2001 From: Thomas Petazzoni Date: Fri, 15 Feb 2008 12:00:23 +0100 Subject: x86: use ELF section to list CPU vendor specific code Replace the hardcoded list of initialization functions for each CPU vendor by a list in an ELF section, which is read at initialization in arch/x86/kernel/cpu/cpu.c to fill the cpu_devs[] array. The ELF section, named .x86cpuvendor.init, is reclaimed after boot, and contains entries of type "struct cpu_vendor_dev" which associates a vendor number with a pointer to a "struct cpu_dev" structure. This first modification allows to remove all the VENDOR_init_cpu() functions. This patch also removes the hardcoded calls to early_init_amd() and early_init_intel(). Instead, we add a "c_early_init" member to the cpu_dev structure, which is then called if not NULL by the generic CPU initialization code. Unfortunately, in early_cpu_detect(), this_cpu is not yet set, so we have to use the cpu_devs[] array directly. This patch is part of the Linux Tiny project, and is needed for further patch that will allow to disable compilation of unused CPU support code. Signed-off-by: Thomas Petazzoni Signed-off-by: Ingo Molnar Signed-off-by: Thomas Gleixner --- arch/x86/kernel/vmlinux_64.lds.S | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'arch/x86/kernel/vmlinux_64.lds.S') diff --git a/arch/x86/kernel/vmlinux_64.lds.S b/arch/x86/kernel/vmlinux_64.lds.S index 4c369451007b..b7ab3c335fae 100644 --- a/arch/x86/kernel/vmlinux_64.lds.S +++ b/arch/x86/kernel/vmlinux_64.lds.S @@ -177,6 +177,11 @@ SECTIONS *(.con_initcall.init) } __con_initcall_end = .; + __x86cpuvendor_start = .; + .x86cpuvendor.init : AT(ADDR(.x86cpuvendor.init) - LOAD_OFFSET) { + *(.x86cpuvendor.init) + } + __x86cpuvendor_end = .; SECURITY_INIT . = ALIGN(8); -- cgit v1.2.2