linux-kernel - Re: [PATCH v7 33/41] x86/shstk: Introduce map_shadow

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Message-ID: <20230310202659.GEZAuSk5bD+PKcaJ/m@fat_crate.local>
Date:   Fri, 10 Mar 2023 21:26:59 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     "Edgecombe, Rick P" <rick.p.edgecombe@...el.com>
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Subject: Re: [PATCH v7 33/41] x86/shstk: Introduce map_shadow_stack syscall

On Fri, Mar 10, 2023 at 08:19:46PM +0000, Edgecombe, Rick P wrote:
> I was thinking ERANGE would be for the 4GB limit. This is the weird 32
> bit limiting thing. So if someone hit it they could look up in the docs
> what is going on. The size-big-enough-for-a-token check could be
> ENOSPC? Then each reason could have a different error code.

Yah, makes perfect sense to me.

Thx.

-- 
Regards/Gruss,
    Boris.

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