linux-kernel - Re: [PATCH v9 23/42] Documentation/x86: Add CET shadow stack description

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Message-ID: <e9a377ce-7ce4-47b0-b30e-56a5aae18544@sirena.org.uk>
Date:   Thu, 6 Jul 2023 15:24:26 +0100
From:   Mark Brown <broonie@...nel.org>
To:     "szabolcs.nagy@....com" <szabolcs.nagy@....com>
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Subject: Re: [PATCH v9 23/42] Documentation/x86: Add CET shadow stack
 description

On Thu, Jul 06, 2023 at 02:14:40PM +0100, szabolcs.nagy@....com wrote:
> The 07/05/2023 20:29, Mark Brown wrote:

> > Push and pop are one control, you get both or neither.

> gcspopm is always available (esentially *ssp++, this is used
> for longjmp).

Ah, sorry - I misremembered there.  You're right, it's only push that we
have control over.

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