powerpc/fadump: reset dump area size if fadump memory reserve fails

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[ Upstream commit d1eb75e0df ]

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>

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Sourabh Jain 2023-07-04 10:37:15 +05:30 • committed by Greg Kroah-Hartman

parent ab8094db59

commit 1d58a92469

1 changed files with 1 additions and 0 deletions

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arch/powerpc/kernel/fadump.c

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