linux-kernel - Re: [PATCH v2] arm64/kexec: Fix missing extra range for crashkres

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Message-ID: <Yw4GvOh3UnnfTbbE@MiWiFi-R3L-srv>
Date:   Tue, 30 Aug 2022 20:46:52 +0800
From:   Baoquan He <bhe@...hat.com>
To:     Levi Yun <ppbuk5246@...il.com>
Cc:     will@...nel.org, catalin.marinas@....com,
        nramas@...ux.microsoft.com, thunder.leizhen@...wei.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        kexec@...ts.infradead.org
Subject: Re: [PATCH v2] arm64/kexec: Fix missing extra range for
 crashkres_low.

On 08/30/22 at 06:28pm, Levi Yun wrote:
> Like crashk_res, Calling crash_exclude_mem_range function with
> crashk_low_res area would need extra crash_mem range too.
> 
> Add one more extra cmem range slot in case of crashk_low_res is used.
                                             ~~^ should be removed.

LGTM,

Acked-by: Baoquan He <bhe@...hat.com>

> 
> Signed-off-by: Levi Yun <ppbuk5246@...il.com>
> ---
>  arch/arm64/kernel/machine_kexec_file.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/arm64/kernel/machine_kexec_file.c b/arch/arm64/kernel/machine_kexec_file.c
> index 889951291cc0..a11a6e14ba89 100644
> --- a/arch/arm64/kernel/machine_kexec_file.c
> +++ b/arch/arm64/kernel/machine_kexec_file.c
> @@ -47,7 +47,7 @@ static int prepare_elf_headers(void **addr, unsigned long *sz)
>  	u64 i;
>  	phys_addr_t start, end;
>  
> -	nr_ranges = 1; /* for exclusion of crashkernel region */
> +	nr_ranges = 2; /* for exclusion of crashkernel region */
>  	for_each_mem_range(i, &start, &end)
>  		nr_ranges++;
>  
> -- 
> 2.35.1
>