diff options
Diffstat (limited to 'arch/powerpc/kexec/core.c')
| -rw-r--r-- | arch/powerpc/kexec/core.c | 45 |
1 files changed, 21 insertions, 24 deletions
diff --git a/arch/powerpc/kexec/core.c b/arch/powerpc/kexec/core.c index 078fe3d76feb..de64c7962991 100644 --- a/arch/powerpc/kexec/core.c +++ b/arch/powerpc/kexec/core.c @@ -18,8 +18,9 @@ #include <asm/kdump.h> #include <asm/machdep.h> #include <asm/pgalloc.h> -#include <asm/prom.h> #include <asm/sections.h> +#include <asm/setup.h> +#include <asm/firmware.h> void machine_kexec_mask_interrupts(void) { unsigned int i; @@ -48,19 +49,6 @@ void machine_crash_shutdown(struct pt_regs *regs) default_machine_crash_shutdown(regs); } -/* - * Do what every setup is needed on image and the - * reboot code buffer to allow us to avoid allocations - * later. - */ -int machine_kexec_prepare(struct kimage *image) -{ - if (ppc_md.machine_kexec_prepare) - return ppc_md.machine_kexec_prepare(image); - else - return default_machine_kexec_prepare(image); -} - void machine_kexec_cleanup(struct kimage *image) { } @@ -68,11 +56,11 @@ void machine_kexec_cleanup(struct kimage *image) void arch_crash_save_vmcoreinfo(void) { -#ifdef CONFIG_NEED_MULTIPLE_NODES +#ifdef CONFIG_NUMA VMCOREINFO_SYMBOL(node_data); VMCOREINFO_LENGTH(node_data, MAX_NUMNODES); #endif -#ifndef CONFIG_NEED_MULTIPLE_NODES +#ifndef CONFIG_NUMA VMCOREINFO_SYMBOL(contig_page_data); #endif #if defined(CONFIG_PPC64) && defined(CONFIG_SPARSEMEM_VMEMMAP) @@ -115,11 +103,12 @@ void machine_kexec(struct kimage *image) void __init reserve_crashkernel(void) { - unsigned long long crash_size, crash_base; + unsigned long long crash_size, crash_base, total_mem_sz; int ret; + total_mem_sz = memory_limit ? memory_limit : memblock_phys_mem_size(); /* use common parsing */ - ret = parse_crashkernel(boot_command_line, memblock_phys_mem_size(), + ret = parse_crashkernel(boot_command_line, total_mem_sz, &crash_size, &crash_base); if (ret == 0 && crash_size > 0) { crashk_res.start = crash_base; @@ -146,11 +135,18 @@ void __init reserve_crashkernel(void) if (!crashk_res.start) { #ifdef CONFIG_PPC64 /* - * On 64bit we split the RMO in half but cap it at half of - * a small SLB (128MB) since the crash kernel needs to place - * itself and some stacks to be in the first segment. + * On the LPAR platform place the crash kernel to mid of + * RMA size (max. of 512MB) to ensure the crash kernel + * gets enough space to place itself and some stack to be + * in the first segment. At the same time normal kernel + * also get enough space to allocate memory for essential + * system resource in the first segment. Keep the crash + * kernel starts at 128MB offset on other platforms. */ - crashk_res.start = min(0x8000000ULL, (ppc64_rma_size / 2)); + if (firmware_has_feature(FW_FEATURE_LPAR)) + crashk_res.start = min_t(u64, ppc64_rma_size / 2, SZ_512M); + else + crashk_res.start = min_t(u64, ppc64_rma_size / 2, SZ_128M); #else crashk_res.start = KDUMP_KERNELBASE; #endif @@ -178,6 +174,7 @@ void __init reserve_crashkernel(void) /* Crash kernel trumps memory limit */ if (memory_limit && memory_limit <= crashk_res.end) { memory_limit = crashk_res.end + 1; + total_mem_sz = memory_limit; printk("Adjusted memory limit for crashkernel, now 0x%llx\n", memory_limit); } @@ -186,7 +183,7 @@ void __init reserve_crashkernel(void) "for crashkernel (System RAM: %ldMB)\n", (unsigned long)(crash_size >> 20), (unsigned long)(crashk_res.start >> 20), - (unsigned long)(memblock_phys_mem_size() >> 20)); + (unsigned long)(total_mem_sz >> 20)); if (!memblock_is_region_memory(crashk_res.start, crash_size) || memblock_reserve(crashk_res.start, crash_size)) { @@ -196,7 +193,7 @@ void __init reserve_crashkernel(void) } } -int overlaps_crashkernel(unsigned long start, unsigned long size) +int __init overlaps_crashkernel(unsigned long start, unsigned long size) { return (start + size) > crashk_res.start && start <= crashk_res.end; } |