Re: [RFC PATCH v5 0/2] sysret_rip update for the Intel FRED architecture

[H. Peter Anvin]

On February 17, 2023 8:27:40 PM PST, Ammar Faizi <ammarfaizi2@xxxxxxxxxxx> wrote:
>On Wed, Feb 15, 2023 at 07:42:47AM +0000, Li, Xin3 wrote:
>> Hi Faizi,
>> 
>> Any update on this patch set?
>
>No comment from HPA. But after the recent discussion with Andrew, I
>think at least it's now clear that we are not going to use "+r"(rsp) to
>avoid the red zone problem.
>
>I am on leave today. Will send revision v8 on Monday.
>
>Thanks,
>

My apologies, I missed your latest response in the torrent of email. The redzone issue is weird; it ought to be breaking all over the place, not just this.

Let me take a quick look at it...