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

From: Samuel Thibault
Subject: [SCM] GNU Mach branch, master, updated. v1.8-570-g2fa00abd
Date: Wed, 15 Feb 2023 04:12:08 -0500 (EST)

This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU Mach".

The branch, master has been updated
       via  2fa00abdeb16e50dd3e98674784c9bd37a173926 (commit)
      from  66a3231294db21599b44a8f6e157f4d0ea72c86a (commit)

Those revisions listed above that are new to this repository have
not appeared on any other notification email; so we list those
revisions in full, below.

- Log -----------------------------------------------------------------
commit 2fa00abdeb16e50dd3e98674784c9bd37a173926
Author: Samuel Thibault <>
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(-)

GNU Mach

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