From 23d75d9cadd79bc9fd6553857d57c679cf18d4cb Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Thu, 19 Feb 2009 15:19:01 +0100 Subject: [S390] fix "mem=" handling in case of standby memory Standby memory detected with the sclp interface gets always registered with add_memory calls without considering the limitationt that the "mem=" kernel paramater implies. So fix this and only register standby memory that is below the specified limit. This fixes zfcpdump since it uses "mem=32M". In case there is appr. 2GB standby memory present all of usable memory would be used for the struct pages needed for standby memory. Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky --- arch/s390/kernel/setup.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'arch/s390/kernel/setup.c') diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index d825f4950e4e..c5cfb6185eac 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -82,7 +82,9 @@ char elf_platform[ELF_PLATFORM_SIZE]; struct mem_chunk __initdata memory_chunk[MEMORY_CHUNKS]; volatile int __cpu_logical_map[NR_CPUS]; /* logical cpu to cpu address */ -static unsigned long __initdata memory_end; + +int __initdata memory_end_set; +unsigned long __initdata memory_end; /* * This is set up by the setup-routine at boot-time @@ -281,6 +283,7 @@ void (*pm_power_off)(void) = machine_power_off; static int __init early_parse_mem(char *p) { memory_end = memparse(p, &p); + memory_end_set = 1; return 0; } early_param("mem", early_parse_mem); @@ -508,8 +511,10 @@ static void __init setup_memory_end(void) int i; #if defined(CONFIG_ZFCPDUMP) || defined(CONFIG_ZFCPDUMP_MODULE) - if (ipl_info.type == IPL_TYPE_FCP_DUMP) + if (ipl_info.type == IPL_TYPE_FCP_DUMP) { memory_end = ZFCPDUMP_HSA_SIZE; + memory_end_set = 1; + } #endif memory_size = 0; memory_end &= PAGE_MASK; -- cgit v1.2.3