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[ Upstream commitd1eb75e0df] In case fadump_reserve_mem() fails to reserve memory, the reserve_dump_area_size variable will retain the reserve area size. This will lead to /sys/kernel/fadump/mem_reserved node displaying an incorrect memory reserved by fadump. To fix this problem, reserve dump area size variable is set to 0 if fadump failed to reserve memory. Fixes:8255da95e5("powerpc/fadump: release all the memory above boot memory size") Signed-off-by: Sourabh Jain <sourabhjain@linux.ibm.com> Acked-by: Mahesh Salgaonkar <mahesh@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20230704050715.203581-1-sourabhjain@linux.ibm.com Signed-off-by: Sasha Levin <sashal@kernel.org>