linux-kernel - Re: [PATCH] Documentation: riscv: tableize memory layout

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Message-ID: <Y2izHzwaYLDCOECc@wendy>
Date:   Mon, 7 Nov 2022 07:26:23 +0000
From:   Conor Dooley <conor.dooley@...rochip.com>
To:     Bagas Sanjaya <bagasdotme@...il.com>
CC:     Conor Dooley <conor@...nel.org>, <linux-doc@...r.kernel.org>,
        <linux-riscv@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
        Jonathan Corbet <corbet@....net>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Alexandre Ghiti <alexandre.ghiti@...onical.com>
Subject: Re: [PATCH] Documentation: riscv: tableize memory layout

On Mon, Nov 07, 2022 at 09:55:31AM +0700, Bagas Sanjaya wrote:
> On 11/6/22 18:22, Conor Dooley wrote:
> >> +   +------------------+---------+------------------+---------+----------------------------------------------------------+
> >> +   |    Start addr    | Offset  |     End addr     |  Size   | VM area description                                      |
> >> +   +==================+=========+==================+=========+==========================================================+
> >> +   | 0000000000000000 |    0    | 0000003fffffffff | 256 GB  | user-space virtual memory, different per mm              |
> >> +   +------------------+---------+------------------+---------+----------------------------------------------------------+
> >> +   | 0000004000000000 | +256 GB | ffffffbfffffffff | ~16M TB | ... huge, almost 64 bits wide hole of non-canonical      |
> >> +   |                  |         |                  |         | virtual memory addresses up to the -256 GB               |
> >> +   |                  |         |                  |         | starting offset of kernel mappings.                      |
> >> +   +------------------+---------+------------------+---------+----------------------------------------------------------+
> >> +   |                             Kernel-space virtual memory, shared between all processes:                             |
> >> +   +------------------+---------+------------------+---------+----------------------------------------------------------+
> >> +   | ffffffc6fee00000 | -228 GB | ffffffc6feffffff | 2 MB    | fixmap                                                   |
> >> +   +------------------+---------+------------------+---------+----------------------------------------------------------+
> >> +   | ffffffc6ff000000 | -228 GB | ffffffc6ffffffff | 16 MB   | PCI io                                                   |
> >> +   +------------------+---------+------------------+---------+----------------------------------------------------------+
> >                                                         ^
> > Will these numbers remain right-aligned in the formatted doc? They were
> > aligned before in the text form & no longer appear to be.
> > 
> 
> These numbers also become wrapped in their cells.
> 
> However, in order to fix alignment of these, custom CSS is needed, similar
> to one in StackOverflow [1].

Hmm. In that case I'd be inclined to agree with Akira that this should
be left as is.

Thanks,
Conor.