[RFC/PATCH 03/15 v3] preparation: address of the 64bit extint parm in lowcore

Carsten Otte
2008-03-25T17:47:15Z

The address 0x11b8 is used by z/VM for pfault and diag 250 I/O to
provide a 64 bit extint parameter. virtio uses the same address, so
its time to update the lowcore structure.

Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
---
include/asm-s390/lowcore.h | 15 ++++++++++-----
1 file changed, 10 insertions(+), 5 deletions(-)

Index: kvm/include/asm-s390/lowcore.h
===================================================================
--- kvm.orig/include/asm-s390/lowcore.h
+++ kvm/include/asm-s390/lowcore.h
@@ -380,27 +380,32 @@ struct _lowcore
/* whether the kernel died with panic() or not */
__u32 panic_magic; /* 0xe00 */

- __u8 pad13[0x1200-0xe04]; /* 0xe04 */
+ __u8 pad13[0x11b8-0xe04]; /* 0xe04 */
+
+ /* 64 bit extparam used for pfault, diag 250 etc */
+ __u64 ext_params2; /* 0x11B8 */
+
+ __u8 pad14[0x1200-0x11C0]; /* 0x11C0 */

/* System info area */

__u64 floating_pt_save_area[16]; /* 0x1200 */
__u64 gpregs_save_area[16]; /* 0x1280 */
__u32 st_status_fixed_logout[4]; /* 0x1300 */
- __u8 pad14[0x1318-0x1310]; /* 0x1310 */
+ __u8 pad15[0x1318-0x1310]; /* 0x1310 */
__u32 prefixreg_save_area; /* 0x1318 */
__u32 fpt_creg_save_area; /* 0x131c */
- __u8 pad15[0x1324-0x1320]; /* 0x1320 */
+ __u8 pad16[0x1324-0x1320]; /* 0x1320 */
__u32 tod_progreg_save_area; /* 0x1324 */
__u32 cpu_timer_save_area[2]; /* 0x1328 */
__u32 clock_comp_save_area[2]; /* 0x1330 */
- __u8 pad16[0x1340-0x1338]; /* 0x1338 */
+ __u8 pad17[0x1340-0x1338]; /* 0x1338 */
__u32 access_regs_save_area[16]; /* 0x1340 */
__u64 cregs_save_area[16]; /* 0x1380 */

/* align to the top of the prefix area */

- __u8 pad17[0x2000-0x1400]; /* 0x1400 */
+ __u8 pad18[0x2000-0x1400]; /* 0x1400 */
#endif /* !__s390x__ */
} __attribute__((packed)); /* End structure*/