diff options
| author | Christian Borntraeger <borntraeger@de.ibm.com> | 2015-03-02 16:27:08 +0100 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2015-03-10 09:26:23 +0100 |
| commit | 2be9d2927cca76d8475f0083e9ecc87baf1b8222 (patch) | |
| tree | ce8a88f5cd97bd8d6d116e5b474d70983c328df4 /pc-bios/s390-ccw/main.c | |
| parent | a310b283e357b54533c8168a92e8f1068efdc4d1 (diff) | |
s390-ccw.img: Allow bigger ramdisk sizes or offsets
The s390-ccw bios creates the the virtqueue at 100MB. For
big ramdisks or offsets (via zipl) this gets overwritten.
As a quick band-aid, lets move the virtqueue into the bss
section, which is at 0x7f00000. As the bios code (text) is
at 0x7e00000 we can now handle ramdisk which are ~27MB
bigger.
Long term we want to make the s390-ccw bios position
independent and load of at the end of memory.
Reported-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Message-Id: <1425310029-53396-2-git-send-email-borntraeger@de.ibm.com>
Diffstat (limited to 'pc-bios/s390-ccw/main.c')
| -rw-r--r-- | pc-bios/s390-ccw/main.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/pc-bios/s390-ccw/main.c b/pc-bios/s390-ccw/main.c index 6f707bbcd4..584d4a2769 100644 --- a/pc-bios/s390-ccw/main.c +++ b/pc-bios/s390-ccw/main.c @@ -12,6 +12,7 @@ #include "virtio.h" char stack[PAGE_SIZE * 8] __attribute__((__aligned__(PAGE_SIZE))); +char ring_area[PAGE_SIZE * 8] __attribute__((__aligned__(PAGE_SIZE))); uint64_t boot_value; static struct subchannel_id blk_schid = { .one = 1 }; |