[SCM] GNU Mach branch, master, updated. v1.8-572-gca7b8ae0

[Samuel Thibault]

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- Log -----------------------------------------------------------------
commit ca7b8ae031d9ce12139d96caedc5d1bd369feeca
Author: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date:   Wed Feb 15 10:59:42 2023 +0100

    smp: Fix more busy loops
    
    We need to avoid the kernel optimizing away the reads from
    memory. Use a standard relaxing instruction for that.

-----------------------------------------------------------------------

Summary of changes:
 i386/i386/lock.h  |  1 +
 i386/intel/pmap.c |  6 +++---
 kern/eventcount.c |  2 +-
 kern/lock.c       | 12 +++++++-----
 kern/machine.c    |  2 +-
 5 files changed, 13 insertions(+), 10 deletions(-)


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