linux-kernel - Re: [PATCH V2 2/2] Documentation: kdump: describe VMCOREINFO export for RISCV64

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Date:   Tue, 18 Oct 2022 10:19:22 +0700
From:   Bagas Sanjaya <bagasdotme@...il.com>
To:     Xianting Tian <xianting.tian@...ux.alibaba.com>
Cc:     paul.walmsley@...ive.com, palmer@...belt.com,
        aou@...s.berkeley.edu, anup@...infault.org, heiko@...ech.de,
        guoren@...nel.org, mick@....forth.gr,
        alexandre.ghiti@...onical.com, bhe@...hat.com, vgoyal@...hat.com,
        dyoung@...hat.com, corbet@....net, Conor.Dooley@...rochip.com,
        kexec@...ts.infradead.org, linux-doc@...r.kernel.org,
        linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org,
        crash-utility@...hat.com, heinrich.schuchardt@...onical.com,
        k-hagio-ab@....com, hschauhan@...ltrace.org, yixun.lan@...il.com
Subject: Re: [PATCH V2 2/2] Documentation: kdump: describe VMCOREINFO export
 for RISCV64

On Fri, Oct 14, 2022 at 09:41:39PM +0800, Xianting Tian wrote:
> The following interrelated definitions and ranges are needed by the kdump
> crash tool, they are exported by "arch/riscv/kernel/crash_core.c":

Better say "..., which are exported by ..."

> diff --git a/Documentation/admin-guide/kdump/vmcoreinfo.rst b/Documentation/admin-guide/kdump/vmcoreinfo.rst
> index 6726f439958c..8e2e164cf3db 100644
> --- a/Documentation/admin-guide/kdump/vmcoreinfo.rst
> +++ b/Documentation/admin-guide/kdump/vmcoreinfo.rst
> @@ -595,3 +595,33 @@ X2TLB
>  -----
>  
>  Indicates whether the crashed kernel enabled SH extended mode.
> +
> +RISCV64
> +=======
> +
> +VA_BITS
> +-------
> +
> +The maximum number of bits for virtual addresses. Used to compute the
> +virtual memory ranges.
> +
> +PAGE_OFFSET
> +-----------
> +
> +Indicates the virtual kernel start address of direct-mapped RAM region.
> +
> +phys_ram_base
> +-------------
> +
> +Indicates the start physical RAM address.
> +
> +MODULES_VADDR|MODULES_END|VMALLOC_START|VMALLOC_END|VMEMMAP_START|VMEMMAP_END|KASAN_SHADOW_START|KASAN_SHADOW_END|KERNEL_LINK_ADDR|ADDRESS_SPACE_END
> +----------------------------------------------------------------------------------------------------------------------------------------------------
> +
> +Used to get the correct ranges:
> +
> +  * MODULES_VADDR ~ MODULES_END : Kernel module space.
> +  * VMALLOC_START ~ VMALLOC_END : vmalloc() / ioremap() space.
> +  * VMEMMAP_START ~ VMEMMAP_END : vmemmap region, used for struct page array.
> +  * KASAN_SHADOW_START ~ KASAN_SHADOW_END : kasan shadow space.
> +  * KERNEL_LINK_ADDR ~ ADDRESS_SPACE_END : Kernel link and BPF space.

The documentation LGTM, thanks.

When the patch subject is fixed,

Reviewed-by: Bagas Sanjaya <bagasdotme@...il.com>

-- 
An old man doll... just what I always wanted! - Clara

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