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| author | Sven Schnelle <svens@linux.ibm.com> | 2024-07-22 16:41:23 +0300 |
|---|---|---|
| committer | Vasily Gorbik <gor@linux.ibm.com> | 2024-07-23 17:02:32 +0300 |
| commit | 4064b711127e1eb5b5fd42d539fd45e3e33c9b6f (patch) | |
| tree | 9279acccf6786d813a6383e8e9544be603ac35f3 /arch | |
| parent | 0001b7bbc53aeb8d31f650701d2a55e498634a2d (diff) | |
| download | linux-4064b711127e1eb5b5fd42d539fd45e3e33c9b6f.tar.xz | |
s390/entry: Make restart_int_handler() ready for lowcore relocation
In preparation of having lowcore at different address than zero,
add the base register to all lowcore accesses in restart_int_handler().
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/s390/kernel/entry.S | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S index a855f901f6e6..ca58b3da3916 100644 --- a/arch/s390/kernel/entry.S +++ b/arch/s390/kernel/entry.S @@ -573,15 +573,17 @@ SYM_CODE_START(restart_int_handler) 0: larl %r15,daton_psw lpswe 0(%r15) # turn dat on, keep irqs off .Ldaton: - lg %r15,__LC_RESTART_STACK + GET_LC %r15 + lg %r15,__LC_RESTART_STACK(%r15) xc STACK_FRAME_OVERHEAD(__PT_SIZE,%r15),STACK_FRAME_OVERHEAD(%r15) stmg %r0,%r14,STACK_FRAME_OVERHEAD+__PT_R0(%r15) - mvc STACK_FRAME_OVERHEAD+__PT_R15(8,%r15),__LC_SAVE_AREA_RESTART - mvc STACK_FRAME_OVERHEAD+__PT_PSW(16,%r15),__LC_RST_OLD_PSW + GET_LC %r13 + mvc STACK_FRAME_OVERHEAD+__PT_R15(8,%r15),__LC_SAVE_AREA_RESTART(%r13) + mvc STACK_FRAME_OVERHEAD+__PT_PSW(16,%r15),__LC_RST_OLD_PSW(%r13) xc 0(STACK_FRAME_OVERHEAD,%r15),0(%r15) - lg %r1,__LC_RESTART_FN # load fn, parm & source cpu - lg %r2,__LC_RESTART_DATA - lgf %r3,__LC_RESTART_SOURCE + lg %r1,__LC_RESTART_FN(%r13) # load fn, parm & source cpu + lg %r2,__LC_RESTART_DATA(%r13) + lgf %r3,__LC_RESTART_SOURCE(%r13) ltgr %r3,%r3 # test source cpu address jm 1f # negative -> skip source stop 0: sigp %r4,%r3,SIGP_SENSE # sigp sense to source cpu |