diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/sh/kernel/setup.c | 29 | ||||
| -rw-r--r-- | arch/x86/kernel/setup_64.c | 36 |
2 files changed, 39 insertions, 26 deletions
diff --git a/arch/sh/kernel/setup.c b/arch/sh/kernel/setup.c index af10db90a554..18a5baf2cbad 100644 --- a/arch/sh/kernel/setup.c +++ b/arch/sh/kernel/setup.c @@ -140,19 +140,26 @@ static void __init reserve_crashkernel(void) ret = parse_crashkernel(boot_command_line, free_mem, &crash_size, &crash_base); if (ret == 0 && crash_size) { - if (crash_base > 0) { - 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)(free_mem >> 20)); - crashk_res.start = crash_base; - crashk_res.end = crash_base + crash_size - 1; - reserve_bootmem(crash_base, crash_size, - BOOTMEM_DEFAULT); - } else + if (crash_base <= 0) { printk(KERN_INFO "crashkernel reservation failed - " "you have to specify a base address\n"); + return; + } + + if (reserve_bootmem(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)(free_mem >> 20)); + crashk_res.start = crash_base; + crashk_res.end = crash_base + crash_size - 1; } } #else diff --git a/arch/x86/kernel/setup_64.c b/arch/x86/kernel/setup_64.c index 8345c3b12f05..a49f5f734a5e 100644 --- a/arch/x86/kernel/setup_64.c +++ b/arch/x86/kernel/setup_64.c @@ -220,29 +220,35 @@ static inline void copy_edd(void) #ifdef CONFIG_KEXEC static void __init reserve_crashkernel(void) { - unsigned long long free_mem; + unsigned long long total_mem; unsigned long long crash_size, crash_base; int ret; - free_mem = - ((unsigned long long)max_low_pfn - min_low_pfn) << PAGE_SHIFT; + total_mem = ((unsigned long long)max_low_pfn - min_low_pfn) << PAGE_SHIFT; - ret = parse_crashkernel(boot_command_line, free_mem, + ret = parse_crashkernel(boot_command_line, total_mem, &crash_size, &crash_base); if (ret == 0 && crash_size) { - if (crash_base > 0) { - 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)(free_mem >> 20)); - crashk_res.start = crash_base; - crashk_res.end = crash_base + crash_size - 1; - reserve_bootmem(crash_base, crash_size, - BOOTMEM_DEFAULT); - } else + if (crash_base <= 0) { printk(KERN_INFO "crashkernel reservation failed - " "you have to specify a base address\n"); + return; + } + + if (reserve_bootmem(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; } } #else |