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| author | Heiko Carstens <hca@linux.ibm.com> | 2022-04-24 15:52:01 +0200 |
|---|---|---|
| committer | Heiko Carstens <hca@linux.ibm.com> | 2022-05-06 20:45:15 +0200 |
| commit | 84f4e1dfb243c0aaed0425a2b1c308a2fb37425d (patch) | |
| tree | 147e325fcac954f46f7328fc9f56b41eb3aa29ab /arch/s390/boot | |
| parent | 734757976e337dff02da5e36dedbac8321326f5c (diff) | |
| download | linux-84f4e1dfb243c0aaed0425a2b1c308a2fb37425d.tar.bz2 | |
s390/boot: change initial program check handler to disabled wait psw
The program check handler of the kernel image points to
startup_pgm_check_handler. However an early program check which happens
while loading the kernel image will jump to potentially random code, since
the code of the program check handler is not yet loaded; leading to a
program check loop.
Therefore initialize it to a disabled wait psw and let the startup code set
the proper psw when everything is in memory.
Reviewed-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Diffstat (limited to 'arch/s390/boot')
| -rw-r--r-- | arch/s390/boot/head.S | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/boot/head.S b/arch/s390/boot/head.S index 206fca8cb816..0b2cec40f261 100644 --- a/arch/s390/boot/head.S +++ b/arch/s390/boot/head.S @@ -69,7 +69,7 @@ __HEAD .org __LC_EXT_NEW_PSW # 0x1b0 .quad 0x0002000180000000,0x1b0 # disabled wait .org __LC_PGM_NEW_PSW # 0x1d0 - .quad 0x0000000180000000,startup_pgm_check_handler + .quad 0x0002000180000000,0x1d0 # disabled wait .org __LC_IO_NEW_PSW # 0x1f0 .quad 0x0002000180000000,0x1f0 # disabled wait |