linux-kernel - Re: [PATCH RFT v5 4/7] fork: Add shadow stack support to clone3()

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Message-ID: <563c21d91b4b8f29c434d0918d489ecdda3f67b7.camel@intel.com>
Date: Sat, 10 Feb 2024 00:55:23 +0000
From: "Edgecombe, Rick P" <rick.p.edgecombe@...el.com>
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Subject: Re: [PATCH RFT v5 4/7] fork: Add shadow stack support to clone3()

On Fri, 2024-02-09 at 12:18 -0800, Rick Edgecombe wrote:
> 
> So, don't we want to consume the token on the *new* task's MM, which
> was already duplicated but still unmapped? In which case I think the
> other arch's would need to GUP regardless of the existence of shadow
> stack atomic ops.

I mean for the !CLONE_VM case.