diff options
Diffstat (limited to 'arch/s390/kernel')
| -rw-r--r-- | arch/s390/kernel/crash_dump.c | 22 | ||||
| -rw-r--r-- | arch/s390/kernel/early.c | 2 | ||||
| -rw-r--r-- | arch/s390/kernel/setup.c | 7 |
3 files changed, 18 insertions, 13 deletions
diff --git a/arch/s390/kernel/crash_dump.c b/arch/s390/kernel/crash_dump.c index f45b2ab0cb81..d7658c4b2ed5 100644 --- a/arch/s390/kernel/crash_dump.c +++ b/arch/s390/kernel/crash_dump.c @@ -95,7 +95,7 @@ static void *elfcorehdr_newmem; /* * Copy one page from zfcpdump "oldmem" * - * For pages below ZFCPDUMP_HSA_SIZE memory from the HSA is copied. Otherwise + * For pages below HSA size memory from the HSA is copied. Otherwise * real memory copy is used. */ static ssize_t copy_oldmem_page_zfcpdump(char *buf, size_t csize, @@ -103,7 +103,7 @@ static ssize_t copy_oldmem_page_zfcpdump(char *buf, size_t csize, { int rc; - if (src < ZFCPDUMP_HSA_SIZE) { + if (src < sclp_get_hsa_size()) { rc = memcpy_hsa(buf, src, csize, userbuf); } else { if (userbuf) @@ -188,18 +188,19 @@ static int remap_oldmem_pfn_range_kdump(struct vm_area_struct *vma, /* * Remap "oldmem" for zfcpdump * - * We only map available memory above ZFCPDUMP_HSA_SIZE. Memory below - * ZFCPDUMP_HSA_SIZE is read on demand using the copy_oldmem_page() function. + * We only map available memory above HSA size. Memory below HSA size + * is read on demand using the copy_oldmem_page() function. */ static int remap_oldmem_pfn_range_zfcpdump(struct vm_area_struct *vma, unsigned long from, unsigned long pfn, unsigned long size, pgprot_t prot) { + unsigned long hsa_end = sclp_get_hsa_size(); unsigned long size_hsa; - if (pfn < ZFCPDUMP_HSA_SIZE >> PAGE_SHIFT) { - size_hsa = min(size, ZFCPDUMP_HSA_SIZE - (pfn << PAGE_SHIFT)); + if (pfn < hsa_end >> PAGE_SHIFT) { + size_hsa = min(size, hsa_end - (pfn << PAGE_SHIFT)); if (size == size_hsa) return 0; size -= size_hsa; @@ -238,9 +239,9 @@ int copy_from_oldmem(void *dest, void *src, size_t count) return rc; } } else { - if ((unsigned long) src < ZFCPDUMP_HSA_SIZE) { - copied = min(count, - ZFCPDUMP_HSA_SIZE - (unsigned long) src); + unsigned long hsa_end = sclp_get_hsa_size(); + if ((unsigned long) src < hsa_end) { + copied = min(count, hsa_end - (unsigned long) src); rc = memcpy_hsa(dest, (unsigned long) src, copied, 0); if (rc) return rc; @@ -580,6 +581,9 @@ int elfcorehdr_alloc(unsigned long long *addr, unsigned long long *size) /* If elfcorehdr= has been passed via cmdline, we use that one */ if (elfcorehdr_addr != ELFCORE_ADDR_MAX) return 0; + /* If we cannot get HSA size for zfcpdump return error */ + if (ipl_info.type == IPL_TYPE_FCP_DUMP && !sclp_get_hsa_size()) + return -ENODEV; mem_chunk_cnt = get_mem_chunk_cnt(); alloc_size = 0x1000 + get_cpu_cnt() * 0x300 + diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c index 96543ac400a7..fca20b5fe79e 100644 --- a/arch/s390/kernel/early.c +++ b/arch/s390/kernel/early.c @@ -483,7 +483,7 @@ void __init startup_init(void) detect_diag44(); detect_machine_facilities(); setup_topology(); - sclp_facilities_detect(); + sclp_early_detect(); #ifdef CONFIG_DYNAMIC_FTRACE S390_lowcore.ftrace_func = (unsigned long)ftrace_caller; #endif diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index ffe1c53264a7..4444875266ee 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -471,8 +471,9 @@ static void __init setup_memory_end(void) #ifdef CONFIG_ZFCPDUMP - if (ipl_info.type == IPL_TYPE_FCP_DUMP && !OLDMEM_BASE) { - memory_end = ZFCPDUMP_HSA_SIZE; + if (ipl_info.type == IPL_TYPE_FCP_DUMP && + !OLDMEM_BASE && sclp_get_hsa_size()) { + memory_end = sclp_get_hsa_size(); memory_end_set = 1; } #endif @@ -586,7 +587,7 @@ static unsigned long __init find_crash_base(unsigned long crash_size, crash_base = (chunk->addr + chunk->size) - crash_size; if (crash_base < crash_size) continue; - if (crash_base < ZFCPDUMP_HSA_SIZE_MAX) + if (crash_base < sclp_get_hsa_size()) continue; if (crash_base < (unsigned long) INITRD_START + INITRD_SIZE) continue; |