diff options
| author | David S. Miller <davem@davemloft.net> | 2011-09-16 01:09:02 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-09-16 01:09:02 -0400 |
| commit | 52b9aca7ae8726d1fb41b97dd1d243d107fef11b (patch) | |
| tree | 7acee111840bd25183513e9bde08e939ffd57be8 /arch/s390/kernel/early.c | |
| parent | 7756332f5b64c9c1535712b9679792e8bd4f0019 (diff) | |
| parent | e2faeec2de9e2c73958e6ea6065dde1e8cd6f3a2 (diff) | |
Merge branch 'master' of ../netdev/
Diffstat (limited to 'arch/s390/kernel/early.c')
| -rw-r--r-- | arch/s390/kernel/early.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c index 068f8465c4ee..f297456dba7a 100644 --- a/arch/s390/kernel/early.c +++ b/arch/s390/kernel/early.c @@ -396,17 +396,19 @@ static __init void detect_machine_facilities(void) static __init void rescue_initrd(void) { #ifdef CONFIG_BLK_DEV_INITRD + unsigned long min_initrd_addr = (unsigned long) _end + (4UL << 20); /* - * Move the initrd right behind the bss section in case it starts - * within the bss section. So we don't overwrite it when the bss - * section gets cleared. + * Just like in case of IPL from VM reader we make sure there is a + * gap of 4MB between end of kernel and start of initrd. + * That way we can also be sure that saving an NSS will succeed, + * which however only requires different segments. */ if (!INITRD_START || !INITRD_SIZE) return; - if (INITRD_START >= (unsigned long) __bss_stop) + if (INITRD_START >= min_initrd_addr) return; - memmove(__bss_stop, (void *) INITRD_START, INITRD_SIZE); - INITRD_START = (unsigned long) __bss_stop; + memmove((void *) min_initrd_addr, (void *) INITRD_START, INITRD_SIZE); + INITRD_START = min_initrd_addr; #endif } |