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s390/os_info: Initialize old os_info in standalone dump kernel

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The commit be42660d0c13 ("s390/crash: use old os_info to create PT_LOAD headers")
introduced use of the old os_info into standalone dump kernel.
Before this change os_info_old_init() expected to be called only from
a regular kdump kernel although the function itself is able to work
in standalone dump kernels as well (because copy_oldmem_kernel() is able
to handle both use cases). Therefore, fix the expectation of os_info_old_init()
and enable it to be called from a standalone dump kernel.

Fixes: f4cac27dc0 ("s390/crash: Use old os_info to create PT_LOAD headers")
Acked-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
This commit is contained in:
Alexander Egorenkov
2024-04-23 11:42:05 +02:00
committed by Alexander Gordeev
parent 3113a29e25
commit a2269a66ee
1 changed files with 2 additions and 1 deletions
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3
arch/s390/kernel/os_info.c
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@@ -18,6 +18,7 @@
#include <asm/physmem_info.h>
#include <asm/maccess.h>
#include <asm/asm-offsets.h>
#include <asm/ipl.h>
/*
* OS info structure has to be page aligned
@@ -146,7 +147,7 @@ static void os_info_old_init(void)
if (os_info_init)
return;
if (!oldmem_data.start)
if (!oldmem_data.start && !is_ipl_type_dump())
goto fail;
if (copy_oldmem_kernel(&addr, __LC_OS_INFO, sizeof(addr)))
goto fail;