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zdump/dfi: Introduce symbolic constants for OLDMEM base and size

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Replace magic values with descriptive names to improve readability.

Signed-off-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
This commit is contained in:
Alexander Egorenkov
2021-10-11 14:03:33 +02:00
committed by Jan Höppner
parent 6ece595532
commit b1da8bbbe9
1 changed files with 5 additions and 2 deletions
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7
zdump/dfi.c
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@@ -18,6 +18,9 @@
#define TIME_FMT_STR "%a, %d %b %Y %H:%M:%S %z"
#define PROGRESS_HASH_CNT 50
#define KDUMP_OLDMEM_BASE 0x10418
#define KDUMP_OLDMEM_SIZE 0x10420
/*
* DFI vector - ensure that tape is the first in the list and devmem the second!
*/
@@ -613,9 +616,9 @@ static void kdump_init(void)
util_log_print(UTIL_LOG_TRACE, "DFI kdump initialization\n");
if (dfi_mem_phys_read(0x10418, &base, sizeof(base)))
if (dfi_mem_phys_read(KDUMP_OLDMEM_BASE, &base, sizeof(base)))
return;
if (dfi_mem_phys_read(0x10420, &size, sizeof(size)))
if (dfi_mem_phys_read(KDUMP_OLDMEM_SIZE, &size, sizeof(size)))
return;
if (base == 0 || size == 0)
return;