linux-kernel - Re: [RESEND PATCH -fixes 2/2] Documentation: kdump: Add va_kernel_pa

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Date:   Tue, 25 Jul 2023 09:48:22 +0200
From:   Alexandre Ghiti <alex@...ti.fr>
To:     Song Shuai <suagrfillet@...il.com>, bhe@...hat.com,
        vgoyal@...hat.com, dyoung@...hat.com, corbet@....net,
        paul.walmsley@...ive.com, palmer@...belt.com,
        aou@...s.berkeley.edu, xianting.tian@...ux.alibaba.com,
        anup@...infault.org, robh@...nel.org, ajones@...tanamicro.com,
        alexghiti@...osinc.com, conor.dooley@...rochip.com
Cc:     kexec@...ts.infradead.org, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org
Subject: Re: [RESEND PATCH -fixes 2/2] Documentation: kdump: Add
 va_kernel_pa_offset for RISCV64


On 24/07/2023 12:09, Song Shuai wrote:
> RISC-V Linux exports "va_kernel_pa_offset" in vmcoreinfo to help
> Crash-utility translate the kernel virtual address correctly.
>
> Here adds the definition of "va_kernel_pa_offset".
>
> Fixes: 3335068f8721 ("riscv: Use PUD/P4D/PGD pages for the linear mapping")
> Link: https://lore.kernel.org/linux-riscv/20230724040649.220279-1-suagrfillet@gmail.com/
> Signed-off-by: Song Shuai <suagrfillet@...il.com>
> ---
>   Documentation/admin-guide/kdump/vmcoreinfo.rst | 6 ++++++
>   1 file changed, 6 insertions(+)
>
> diff --git a/Documentation/admin-guide/kdump/vmcoreinfo.rst b/Documentation/admin-guide/kdump/vmcoreinfo.rst
> index c18d94fa6470..f8ebb63b6c5d 100644
> --- a/Documentation/admin-guide/kdump/vmcoreinfo.rst
> +++ b/Documentation/admin-guide/kdump/vmcoreinfo.rst
> @@ -624,3 +624,9 @@ Used to get the correct ranges:
>     * VMALLOC_START ~ VMALLOC_END : vmalloc() / ioremap() space.
>     * VMEMMAP_START ~ VMEMMAP_END : vmemmap space, used for struct page array.
>     * KERNEL_LINK_ADDR : start address of Kernel link and BPF
> +
> +va_kernel_pa_offset
> +-------------------
> +
> +Indicates the offset between the kernel virtual and physical mappings.
> +Used to translate virtual to physical addresses.


You can add:

Reviewed-by: Alexandre Ghiti <alexghiti@...osinc.com>

Thanks,

Alex