lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

[PATCH] s390: improved machine check handling

Browse Source 
Improved machine check handling.  Kernel is now able to receive machine checks
while in kernel mode (system call, interrupt and program check handling).
Also register validation is now performed.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Heiko Carstens
2005-06-25 14:55:30 -07:00
committed by Linus Torvalds
parent f901e5d1e0
commit 77fa22450d
12 changed files with 576 additions and 135 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
arch/s390/kernel/smp.c
View File

@@ -773,13 +773,24 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
*(lowcore_ptr[i]) = S390_lowcore;
lowcore_ptr[i]->async_stack = stack + (ASYNC_SIZE);
#ifdef CONFIG_CHECK_STACK
stack = __get_free_pages(GFP_KERNEL,0);
if (stack == 0ULL)
panic("smp_boot_cpus failed to allocate memory\n");
lowcore_ptr[i]->panic_stack = stack + (PAGE_SIZE);
#ifndef __s390x__
if (MACHINE_HAS_IEEE) {
lowcore_ptr[i]->extended_save_area_addr =
(__u32) __get_free_pages(GFP_KERNEL,0);
if (lowcore_ptr[i]->extended_save_area_addr == 0)
panic("smp_boot_cpus failed to "
"allocate memory\n");
}
#endif
}
#ifndef __s390x__
if (MACHINE_HAS_IEEE)
ctl_set_bit(14, 29); /* enable extended save area */
#endif
set_prefix((u32)(unsigned long) lowcore_ptr[smp_processor_id()]);
for_each_cpu(cpu)