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s390: rename and split lowcore field per_perc_atmid

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per_perc_atmid is currently a two-byte field that combines two
fields, the PER code and the PER Addressing-and-Translation-Mode
Identification (ATMID)

Let's make them accessible indepently and also rename per_cause to
per_code.

Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
This commit is contained in:
Jens Freimann 2014-02-26 16:32:46 +01:00 committed by Christian Borntraeger
parent 3d53b46ce8
commit 21ee7ffd17
4 changed files with 11 additions and 8 deletions
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6
arch/s390/include/asm/lowcore.h
View File

@ -56,7 +56,8 @@ struct _lowcore {
__u16 pgm_code; /* 0x008e */
__u32 trans_exc_code; /* 0x0090 */
__u16 mon_class_num; /* 0x0094 */
__u16 per_perc_atmid; /* 0x0096 */
__u8 per_code; /* 0x0096 */
__u8 per_atmid; /* 0x0097 */
__u32 per_address; /* 0x0098 */
__u32 monitor_code; /* 0x009c */
__u8 exc_access_id; /* 0x00a0 */
@ -196,7 +197,8 @@ struct _lowcore {
__u16 pgm_code; /* 0x008e */
__u32 data_exc_code; /* 0x0090 */
__u16 mon_class_num; /* 0x0094 */
__u16 per_perc_atmid; /* 0x0096 */
__u8 per_code; /* 0x0096 */
__u8 per_atmid; /* 0x0097 */
__u64 per_address; /* 0x0098 */
__u8 exc_access_id; /* 0x00a0 */
__u8 per_access_id; /* 0x00a1 */

5
arch/s390/kernel/asm-offsets.c
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@ -89,9 +89,10 @@ int main(void)
DEFINE(__LC_PGM_ILC, offsetof(struct _lowcore, pgm_ilc));
DEFINE(__LC_PGM_INT_CODE, offsetof(struct _lowcore, pgm_code));
DEFINE(__LC_TRANS_EXC_CODE, offsetof(struct _lowcore, trans_exc_code));
DEFINE(__LC_PER_CAUSE, offsetof(struct _lowcore, per_perc_atmid));
DEFINE(__LC_PER_CODE, offsetof(struct _lowcore, per_code));
DEFINE(__LC_PER_ATMID, offsetof(struct _lowcore, per_atmid));
DEFINE(__LC_PER_ADDRESS, offsetof(struct _lowcore, per_address));
DEFINE(__LC_PER_PAID, offsetof(struct _lowcore, per_access_id));
DEFINE(__LC_PER_ACCESS_ID, offsetof(struct _lowcore, per_access_id));
DEFINE(__LC_AR_MODE_ID, offsetof(struct _lowcore, ar_mode_id));
DEFINE(__LC_SUBCHANNEL_ID, offsetof(struct _lowcore, subchannel_id));
DEFINE(__LC_SUBCHANNEL_NR, offsetof(struct _lowcore, subchannel_nr));

4
arch/s390/kernel/entry.S
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@ -391,8 +391,8 @@ ENTRY(pgm_check_handler)
jz pgm_kprobe
oi __TI_flags+3(%r12),_TIF_PER_TRAP
mvc __THREAD_per_address(4,%r1),__LC_PER_ADDRESS
mvc __THREAD_per_cause(2,%r1),__LC_PER_CAUSE
mvc __THREAD_per_paid(1,%r1),__LC_PER_PAID
mvc __THREAD_per_cause(2,%r1),__LC_PER_CODE
mvc __THREAD_per_paid(1,%r1),__LC_PER_ACCESS_ID
0: REENABLE_IRQS
xc __SF_BACKCHAIN(4,%r15),__SF_BACKCHAIN(%r15)
l %r1,BASED(.Ljump_table)

4
arch/s390/kernel/entry64.S
View File

@ -423,8 +423,8 @@ ENTRY(pgm_check_handler)
jz pgm_kprobe
oi __TI_flags+7(%r12),_TIF_PER_TRAP
mvc __THREAD_per_address(8,%r14),__LC_PER_ADDRESS
mvc __THREAD_per_cause(2,%r14),__LC_PER_CAUSE
mvc __THREAD_per_paid(1,%r14),__LC_PER_PAID
mvc __THREAD_per_cause(2,%r14),__LC_PER_CODE
mvc __THREAD_per_paid(1,%r14),__LC_PER_ACCESS_ID
0: REENABLE_IRQS
xc __SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15)
larl %r1,pgm_check_table