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| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2007-03-05 23:35:43 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2007-03-05 23:35:43 +0100 |
| commit | c5dd8586707800cd7bbdefcd675ad7d3c9afcd57 (patch) | |
| tree | e80b86321c3e7e2c478ad8d7850d8b3c98be7850 /arch/s390/kernel/reipl64.S | |
| parent | [S390] smp: disable preemption in smp_call_function/smp_call_function_on (diff) | |
| download | linux-c5dd8586707800cd7bbdefcd675ad7d3c9afcd57.tar.xz linux-c5dd8586707800cd7bbdefcd675ad7d3c9afcd57.zip | |
[S390] reipl: move dump_prefix_page out of text section.
Reipl doesn't work on older machines were s390_reset_machine() gets
called. The reason is that the text section is read-only but the
variable dump_prefix_page is there. Since s390_reset_machine() writes
to it we get a protection exception.
Therefore move dump_prefix_page to the bss section.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/reipl64.S')
| -rw-r--r-- | arch/s390/kernel/reipl64.S | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/arch/s390/kernel/reipl64.S b/arch/s390/kernel/reipl64.S index dbb3eed38865..c41930499a5f 100644 --- a/arch/s390/kernel/reipl64.S +++ b/arch/s390/kernel/reipl64.S @@ -8,6 +8,12 @@ */ #include <asm/lowcore.h> + +# +# do_reipl_asm +# Parameter: r2 = schid of reipl device +# + .globl do_reipl_asm do_reipl_asm: basr %r13,0 .Lpg0: lpswe .Lnewpsw-.Lpg0(%r13) @@ -20,7 +26,8 @@ do_reipl_asm: basr %r13,0 stg %r0,__LC_GPREGS_SAVE_AREA-0x1000+8(%r1) stctg %c0,%c15,__LC_CREGS_SAVE_AREA-0x1000(%r1) stam %a0,%a15,__LC_AREGS_SAVE_AREA-0x1000(%r1) - mvc __LC_PREFIX_SAVE_AREA-0x1000(4,%r1),dump_prefix_page-.Lpg0(%r13) + lg %r10,.Ldump_pfx-.Lpg0(%r13) + mvc __LC_PREFIX_SAVE_AREA-0x1000(4,%r1),0(%r10) stfpc __LC_FP_CREG_SAVE_AREA-0x1000(%r1) stckc .Lclkcmp-.Lpg0(%r13) mvc __LC_CLOCK_COMP_SAVE_AREA-0x1000(8,%r1),.Lclkcmp-.Lpg0(%r13) @@ -64,6 +71,7 @@ do_reipl_asm: basr %r13,0 .align 8 .Lclkcmp: .quad 0x0000000000000000 .Lall: .quad 0x00000000ff000000 +.Ldump_pfx: .quad dump_prefix_page .Lregsave: .quad 0x0000000000000000 .align 16 /* @@ -103,6 +111,3 @@ do_reipl_asm: basr %r13,0 .long 0x00000000,0x00000000 .long 0x00000000,0x00000000 .long 0x00000000,0x00000000 - .globl dump_prefix_page -dump_prefix_page: - .long 0x00000000 |