[v2,0/7] x86: retbleed=stuff fixes

Message

Peter Zijlstra Jan. 16, 2023, 2:25 p.m. UTC

Hi all,

Patches to address the various callthunk fails reported by Joan.

The first two patches are new (and I've temporarily dropped the
restore_processor_state sealing).

It is my understanding that AP bringup will always use the 16bit trampoline
path, if this is not the case, please holler.

Comments

Joan Bruguera Micó Jan. 18, 2023, 1:54 a.m. UTC | #1

Thanks, I've been testing those patches on my real system (i5-7200U) for
the last day with no problems so far, waking from s2ram works as well.
I can also no longer see those `sarq $5, %gs:0x1337` with %gs=0 on QEMU.

Regards,
- Joan

Josh Poimboeuf May 16, 2023, 1:59 p.m. UTC | #2

On Mon, Jan 16, 2023 at 03:25:33PM +0100, Peter Zijlstra wrote:
> Hi all,
> 
> Patches to address the various callthunk fails reported by Joan.
> 
> The first two patches are new (and I've temporarily dropped the
> restore_processor_state sealing).
> 
> It is my understanding that AP bringup will always use the 16bit trampoline
> path, if this is not the case, please holler.

Ping?