diff options
| author | Vasily Gorbik <gor@linux.ibm.com> | 2018-06-25 14:59:35 +0300 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2018-07-02 12:25:05 +0300 |
| commit | 627c9b62058ebfd368b7411e7ea5a27df48486c8 (patch) | |
| tree | 438c99d8b33363ba5b6339ebaba42c956148b5c7 /arch/s390/boot/head.S | |
| parent | 9acdb3bb070167c257252e131f56fb8daaa99766 (diff) | |
| download | linux-627c9b62058ebfd368b7411e7ea5a27df48486c8.tar.xz | |
s390/boot: block uncompressed vmlinux booting attempts
Since the plain vmlinux ELF file no longer carries all necessary parts
for starting up (like the entry point and decompressor), add a check
which would block boot process and encourage users to use bzImage or
arch/s390/boot/compressed/vmlinux instead.
The check relies on s390 linux entry point ABI definition, which is only
present in bzImage and arch/s390/boot/compressed/vmlinux.
Reported-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Cornelia Huck <cohuck@redhat.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/boot/head.S')
| -rw-r--r-- | arch/s390/boot/head.S | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/s390/boot/head.S b/arch/s390/boot/head.S index f09e792df495..f721913b73f1 100644 --- a/arch/s390/boot/head.S +++ b/arch/s390/boot/head.S @@ -272,14 +272,14 @@ iplstart: .org 0x10000 ENTRY(startup) j .Lep_startup_normal - .org 0x10008 + .org EP_OFFSET # # This is a list of s390 kernel entry points. At address 0x1000f the number of # valid entry points is stored. # # IMPORTANT: Do not change this table, it is s390 kernel ABI! # - .ascii "S390EP" + .ascii EP_STRING .byte 0x00,0x01 # # kdump startup-code at 0x10010, running in 64 bit absolute addressing mode |