[SCM] GNU Mach branch, master, updated. v1.8-570-g2fa00abd

[Samuel Thibault]

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- Log -----------------------------------------------------------------
commit 2fa00abdeb16e50dd3e98674784c9bd37a173926
Author: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date:   Wed Feb 15 10:11:00 2023 +0100

    pmap: Fix busy loop waiting for pmap users
    
    We need to avoid the kernel optimizing away the read from
    pmap->cpus_using. Use a standard relaxing instruction for that.

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

Summary of changes:
 i386/i386/lock.h    |  2 +-
 i386/i386/mp_desc.c |  4 ++--
 i386/i386/smp.c     | 14 ++++++--------
 i386/i386/smp.h     |  2 ++
 i386/intel/pmap.c   |  2 +-
 5 files changed, 12 insertions(+), 12 deletions(-)


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