diff options
| -rw-r--r-- | arch/x86/kernel/setup.c | 61 | ||||
| -rw-r--r-- | arch/x86/kernel/setup_32.c | 53 | ||||
| -rw-r--r-- | arch/x86/kernel/setup_64.c | 40 | ||||
| -rw-r--r-- | include/asm-x86/setup.h | 3 |
4 files changed, 64 insertions, 93 deletions
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index ebb0a2bcdc0..c5330f601b6 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -3,6 +3,7 @@ #include <linux/init.h> #include <linux/bootmem.h> #include <linux/percpu.h> +#include <linux/kexec.h> #include <asm/smp.h> #include <asm/percpu.h> #include <asm/sections.h> @@ -11,6 +12,7 @@ #include <asm/topology.h> #include <asm/mpspec.h> #include <asm/apicdef.h> +#include <asm/highmem.h> #ifdef CONFIG_X86_LOCAL_APIC unsigned int num_processors; @@ -404,3 +406,62 @@ EXPORT_SYMBOL(node_to_cpumask); #endif /* CONFIG_DEBUG_PER_CPU_MAPS */ #endif /* X86_64_NUMA */ + + +/* + * --------- Crashkernel reservation ------------------------------ + */ + +static inline unsigned long long get_total_mem(void) +{ + unsigned long long total; + + total = max_low_pfn - min_low_pfn; +#ifdef CONFIG_HIGHMEM + total += highend_pfn - highstart_pfn; +#endif + + return total << PAGE_SHIFT; +} + +#ifdef CONFIG_KEXEC +void __init reserve_crashkernel(void) +{ + unsigned long long total_mem; + unsigned long long crash_size, crash_base; + int ret; + + total_mem = get_total_mem(); + + ret = parse_crashkernel(boot_command_line, total_mem, + &crash_size, &crash_base); + if (ret == 0 && crash_size > 0) { + if (crash_base <= 0) { + printk(KERN_INFO "crashkernel reservation failed - " + "you have to specify a base address\n"); + return; + } + + if (reserve_bootmem_generic(crash_base, crash_size, + BOOTMEM_EXCLUSIVE) < 0) { + printk(KERN_INFO "crashkernel reservation failed - " + "memory is in use\n"); + return; + } + + printk(KERN_INFO "Reserving %ldMB of memory at %ldMB " + "for crashkernel (System RAM: %ldMB)\n", + (unsigned long)(crash_size >> 20), + (unsigned long)(crash_base >> 20), + (unsigned long)(total_mem >> 20)); + + crashk_res.start = crash_base; + crashk_res.end = crash_base + crash_size - 1; + insert_resource(&iomem_resource, &crashk_res); + } +} +#else +void __init reserve_crashkernel(void) +{} +#endif + diff --git a/arch/x86/kernel/setup_32.c b/arch/x86/kernel/setup_32.c index a9b19ad24ed..369d0fe1ff9 100644 --- a/arch/x86/kernel/setup_32.c +++ b/arch/x86/kernel/setup_32.c @@ -429,59 +429,6 @@ extern unsigned long __init setup_memory(void); extern void zone_sizes_init(void); #endif /* !CONFIG_NEED_MULTIPLE_NODES */ -static inline unsigned long long get_total_mem(void) -{ - unsigned long long total; - - total = max_low_pfn - min_low_pfn; -#ifdef CONFIG_HIGHMEM - total += highend_pfn - highstart_pfn; -#endif - - return total << PAGE_SHIFT; -} - -#ifdef CONFIG_KEXEC -static void __init reserve_crashkernel(void) -{ - unsigned long long total_mem; - unsigned long long crash_size, crash_base; - int ret; - - total_mem = get_total_mem(); - - ret = parse_crashkernel(boot_command_line, total_mem, - &crash_size, &crash_base); - if (ret == 0 && crash_size > 0) { - if (crash_base <= 0) { - printk(KERN_INFO "crashkernel reservation failed - " - "you have to specify a base address\n"); - return; - } - - if (reserve_bootmem_generic(crash_base, crash_size, - BOOTMEM_EXCLUSIVE) < 0) { - printk(KERN_INFO "crashkernel reservation failed - " - "memory is in use\n"); - return; - } - - printk(KERN_INFO "Reserving %ldMB of memory at %ldMB " - "for crashkernel (System RAM: %ldMB)\n", - (unsigned long)(crash_size >> 20), - (unsigned long)(crash_base >> 20), - (unsigned long)(total_mem >> 20)); - - crashk_res.start = crash_base; - crashk_res.end = crash_base + crash_size - 1; - insert_resource(&iomem_resource, &crashk_res); - } -} -#else -static inline void __init reserve_crashkernel(void) -{} -#endif - #ifdef CONFIG_BLK_DEV_INITRD static bool do_relocate_initrd = false; diff --git a/arch/x86/kernel/setup_64.c b/arch/x86/kernel/setup_64.c index 16ef53ab538..504caeaffd5 100644 --- a/arch/x86/kernel/setup_64.c +++ b/arch/x86/kernel/setup_64.c @@ -228,46 +228,6 @@ static inline void copy_edd(void) } #endif -#ifdef CONFIG_KEXEC -static void __init reserve_crashkernel(void) -{ - unsigned long long total_mem; - unsigned long long crash_size, crash_base; - int ret; - - total_mem = ((unsigned long long)max_low_pfn - min_low_pfn) << PAGE_SHIFT; - - ret = parse_crashkernel(boot_command_line, total_mem, - &crash_size, &crash_base); - if (ret == 0 && crash_size) { - if (crash_base <= 0) { - printk(KERN_INFO "crashkernel reservation failed - " - "you have to specify a base address\n"); - return; - } - - if (reserve_bootmem_generic(crash_base, crash_size, - BOOTMEM_EXCLUSIVE) < 0) { - printk(KERN_INFO "crashkernel reservation failed - " - "memory is in use\n"); - return; - } - - printk(KERN_INFO "Reserving %ldMB of memory at %ldMB " - "for crashkernel (System RAM: %ldMB)\n", - (unsigned long)(crash_size >> 20), - (unsigned long)(crash_base >> 20), - (unsigned long)(total_mem >> 20)); - crashk_res.start = crash_base; - crashk_res.end = crash_base + crash_size - 1; - insert_resource(&iomem_resource, &crashk_res); - } -} -#else -static inline void __init reserve_crashkernel(void) -{} -#endif - /* * setup_arch - architecture-specific boot-time initializations * diff --git a/include/asm-x86/setup.h b/include/asm-x86/setup.h index e14b6e73d26..b434bdd82ba 100644 --- a/include/asm-x86/setup.h +++ b/include/asm-x86/setup.h @@ -8,6 +8,9 @@ /* Interrupt control for vSMPowered x86_64 systems */ void vsmp_init(void); +/* Crashkernel reservation */ +void reserve_crashkernel(void); + #ifndef CONFIG_PARAVIRT #define paravirt_post_allocator_init() do {} while (0) #endif |