From 25097bf153391f7be4c591d47061b3dc4990dac2 Mon Sep 17 00:00:00 2001 From: Christian Ehrhardt Date: Tue, 14 Apr 2009 15:36:16 +0200 Subject: [S390] s390: move machine flags to lowcore Currently the storage of the machine flags is a globally exported unsigned long long variable. By moving the storage location into the lowcore struct we allow assembler code to check machine_flags directly even without needing a register. Addtionally the lowcore and therefore the machine flags too will be in cache most of the time. Signed-off-by: Christian Ehrhardt Signed-off-by: Martin Schwidefsky --- arch/s390/kernel/early.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'arch/s390/kernel/early.c') diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c index 4d221c81c849..d4e1e5b6cfda 100644 --- a/arch/s390/kernel/early.c +++ b/arch/s390/kernel/early.c @@ -34,6 +34,8 @@ char kernel_nss_name[NSS_NAME_SIZE + 1]; +static unsigned long machine_flags; + static void __init setup_boot_command_line(void); @@ -391,5 +393,6 @@ void __init startup_init(void) setup_hpage(); sclp_facilities_detect(); detect_memory_layout(memory_chunk); + S390_lowcore.machine_flags = machine_flags; lockdep_on(); } -- cgit v1.2.1