If the memory reservation process (memblock_reserve) fails to reserve the memory, the reserve dump variable retains the dump area size. Consequently, the size of the dump area calculated for reservation is displayed in /sys/kernel/fadump/mem_reserved.
To resolve this issue, the reserve dump area size variable is set to 0 if the memblock_reserve fails to reserve memory. Fixes: 8255da95e545 ("powerpc/fadump: release all the memory above boot memory size") Signed-off-by: Sourabh Jain <sourabhj...@linux.ibm.com> Acked-by: Mahesh Salgaonkar <mah...@linux.ibm.com> --- arch/powerpc/kernel/fadump.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/powerpc/kernel/fadump.c b/arch/powerpc/kernel/fadump.c index ea0a073abd96..a8f2c3b2fa1e 100644 --- a/arch/powerpc/kernel/fadump.c +++ b/arch/powerpc/kernel/fadump.c @@ -641,6 +641,7 @@ int __init fadump_reserve_mem(void) goto error_out; if (memblock_reserve(base, size)) { + fw_dump.reserve_dump_area_size = 0; pr_err("Failed to reserve memory!\n"); goto error_out; } -- 2.40.1