Gitweb: http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=5c3391f9f749023a49c64d607da4fb49263690eb Commit: 5c3391f9f749023a49c64d607da4fb49263690eb Parent: d62cc47163ba2acad6a3c7edec7d522b9e89f0d2 Author: Bernhard Walle <[EMAIL PROTECTED]> AuthorDate: Thu Oct 18 23:40:59 2007 -0700 Committer: Linus Torvalds <[EMAIL PROTECTED]> CommitDate: Fri Oct 19 11:53:50 2007 -0700
Use extended crashkernel command line on x86_64 This patch removes the crashkernel parsing from arch/x86_64/kernel/machine_kexec.c and calls the generic function, introduced in the last patch, in setup_bootmem_allocator(). This is necessary because the amount of System RAM must be known in this function now because of the new syntax. Signed-off-by: Bernhard Walle <[EMAIL PROTECTED]> Cc: Andi Kleen <[EMAIL PROTECTED]> Cc: Vivek Goyal <[EMAIL PROTECTED]> Cc: "Eric W. Biederman" <[EMAIL PROTECTED]> Cc: Thomas Gleixner <[EMAIL PROTECTED]> Cc: Ingo Molnar <[EMAIL PROTECTED]> Signed-off-by: Andrew Morton <[EMAIL PROTECTED]> Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]> --- arch/x86/kernel/e820_64.c | 3 +- arch/x86/kernel/machine_kexec_64.c | 27 ------------------------ arch/x86/kernel/setup_64.c | 39 +++++++++++++++++++++++++++++------ 3 files changed, 34 insertions(+), 35 deletions(-) diff --git a/arch/x86/kernel/e820_64.c b/arch/x86/kernel/e820_64.c index e422b81..5761686 100644 --- a/arch/x86/kernel/e820_64.c +++ b/arch/x86/kernel/e820_64.c @@ -226,7 +226,8 @@ void __init e820_reserve_resources(void) request_resource(res, &code_resource); request_resource(res, &data_resource); #ifdef CONFIG_KEXEC - request_resource(res, &crashk_res); + if (crashk_res.start != crashk_res.end) + request_resource(res, &crashk_res); #endif } } diff --git a/arch/x86/kernel/machine_kexec_64.c b/arch/x86/kernel/machine_kexec_64.c index 7450b69..0d8577f 100644 --- a/arch/x86/kernel/machine_kexec_64.c +++ b/arch/x86/kernel/machine_kexec_64.c @@ -231,33 +231,6 @@ NORET_TYPE void machine_kexec(struct kimage *image) image->start); } -/* [EMAIL PROTECTED] specifies the location to reserve for - * a crash kernel. By reserving this memory we guarantee - * that linux never set's it up as a DMA target. - * Useful for holding code to do something appropriate - * after a kernel panic. - */ -static int __init setup_crashkernel(char *arg) -{ - unsigned long size, base; - char *p; - if (!arg) - return -EINVAL; - size = memparse(arg, &p); - if (arg == p) - return -EINVAL; - if (*p == '@') { - base = memparse(p+1, &p); - /* FIXME: Do I want a sanity check to validate the - * memory range? Yes you do, but it's too early for - * e820 -AK */ - crashk_res.start = base; - crashk_res.end = base + size - 1; - } - return 0; -} -early_param("crashkernel", setup_crashkernel); - void arch_crash_save_vmcoreinfo(void) { #ifdef CONFIG_ARCH_DISCONTIGMEM_ENABLE diff --git a/arch/x86/kernel/setup_64.c b/arch/x86/kernel/setup_64.c index 5a19f0c..cdcba69 100644 --- a/arch/x86/kernel/setup_64.c +++ b/arch/x86/kernel/setup_64.c @@ -191,6 +191,37 @@ static inline void copy_edd(void) } #endif +#ifdef CONFIG_KEXEC +static void __init reserve_crashkernel(void) +{ + unsigned long long free_mem; + unsigned long long crash_size, crash_base; + int ret; + + free_mem = ((unsigned long long)max_low_pfn - min_low_pfn) << PAGE_SHIFT; + + 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); + } else + printk(KERN_INFO "crashkernel reservation failed - " + "you have to specify a base address\n"); + } +} +#else +static inline void __init reserve_crashkernel(void) +{} +#endif + #define EBDA_ADDR_POINTER 0x40E unsigned __initdata ebda_addr; @@ -357,13 +388,7 @@ void __init setup_arch(char **cmdline_p) } } #endif -#ifdef CONFIG_KEXEC - if (crashk_res.start != crashk_res.end) { - reserve_bootmem_generic(crashk_res.start, - crashk_res.end - crashk_res.start + 1); - } -#endif - + reserve_crashkernel(); paging_init(); #ifdef CONFIG_PCI - To unsubscribe from this list: send the line "unsubscribe git-commits-head" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html