From: Sourabh Jain <sourabhjain@linux.ibm.com>
To: linuxppc-dev@ozlabs.org, mpe@ellerman.id.au
Cc: mahesh@linux.vnet.ibm.com,
Mahesh Salgaonkar <mahesh@linux.ibm.com>,
hbathini@linux.ibm.com
Subject: Re: [PATCH v2] powerpc/fadump: reset dump area size if fadump memory reserve fails
Date: Thu, 17 Aug 2023 16:32:12 +0530 [thread overview]
Message-ID: <8732c11e-77e4-2231-dc84-568a5e8ea652@linux.ibm.com> (raw)
In-Reply-To: <20230704050715.203581-1-sourabhjain@linux.ibm.com>
Hello Michael,
Are there any reviews or comments on this fix?
Thanks,
Sourabh Jain
On 04/07/23 10:37, Sourabh Jain wrote:
> 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: 8255da95e545 ("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>
> ---
> Chnages form V1:
> * Reset the dump area size within the error_out path to cover more
> failure cases. Furthermore, the commit description has been modified
> accordingly.
> ---
> 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 f3166acab09b..5a07d0f9c7f0 100644
> --- a/arch/powerpc/kernel/fadump.c
> +++ b/arch/powerpc/kernel/fadump.c
> @@ -654,6 +654,7 @@ int __init fadump_reserve_mem(void)
> return ret;
> error_out:
> fw_dump.fadump_enabled = 0;
> + fw_dump.reserve_dump_area_size = 0;
> return 0;
> }
>
next prev parent reply other threads:[~2023-08-17 11:03 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-04 5:07 [PATCH v2] powerpc/fadump: reset dump area size if fadump memory reserve fails Sourabh Jain
2023-08-17 11:02 ` Sourabh Jain [this message]
2023-08-17 12:47 ` Michael Ellerman
2023-08-23 11:55 ` Michael Ellerman
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