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Date:   Thu, 3 Feb 2022 15:58:49 -0600
From:   John Allen <john.allen@amd.com>
To:     Rick Edgecombe <rick.p.edgecombe@intel.com>
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Subject: Re: [PATCH 35/35] x86/cpufeatures: Limit shadow stack to Intel CPUs
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References: <20220130211838.8382-1-rick.p.edgecombe@intel.com>
 <20220130211838.8382-36-rick.p.edgecombe@intel.com>
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On Sun, Jan 30, 2022 at 01:18:38PM -0800, Rick Edgecombe wrote:
> Shadow stack is supported on newer AMD processors, but the kernel
> implementation has not been tested on them. Prevent basic issues from
> showing up for normal users by disabling shadow stack on all CPUs except
> Intel until it has been tested. At which point the limitation should be
> removed.

Hi Rick,

I have been testing Yu-Cheng's patchsets on AMD hardware and I am
working on testing this version now. How are you testing this new
series? I can partially test by calling the prctl enable for shadow
stack directly from a program, but I'm not sure how useful that's going
to be without the glibc support. Do you have a public repo with the
necessary glibc changes to enable shadow stack early?

Thanks,
John