diff options
| author | Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com> | 2009-04-14 15:36:16 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2009-04-14 15:37:21 +0200 |
| commit | 25097bf153391f7be4c591d47061b3dc4990dac2 (patch) | |
| tree | e6fce72c43759d97eb80f0af1ae08c0e6058e6bc /arch/s390/kernel/setup.c | |
| parent | b21597d0268983f8f9e8b563494f75490403e948 (diff) | |
[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 <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/setup.c')
| -rw-r--r-- | arch/s390/kernel/setup.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index 06201b93cbbf..163bdfe5a6be 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -82,9 +82,6 @@ EXPORT_SYMBOL(console_devno); unsigned int console_irq = -1; EXPORT_SYMBOL(console_irq); -unsigned long machine_flags; -EXPORT_SYMBOL(machine_flags); - unsigned long elf_hwcap = 0; char elf_platform[ELF_PLATFORM_SIZE]; @@ -426,6 +423,7 @@ setup_lowcore(void) __alloc_bootmem(PAGE_SIZE, PAGE_SIZE, 0) + PAGE_SIZE; lc->current_task = (unsigned long) init_thread_union.thread_info.task; lc->thread_info = (unsigned long) &init_thread_union; + lc->machine_flags = S390_lowcore.machine_flags; #ifndef CONFIG_64BIT if (MACHINE_HAS_IEEE) { lc->extended_save_area_addr = (__u32) |