[SCM] GNU Mach branch, master, updated. v1.8-663-g8b29b18f

[Samuel Thibault]

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- Log -----------------------------------------------------------------
commit 8b29b18fda413928c32473475ca51aa05c52db18
Author: Luca Dariz <luca@orpolo.org>
Date:   Sat Jul 29 19:45:14 2023 +0200

    x86_64: install emergency handler for double fault
    
    * i386/i386/idt.c: add selector for the interrupt-specific stack
    * i386/i386/ktss.c: configure ist1 to use a dedicated stack
    * i386/i386/trap.c: add double fault handler, which just prints the
      state and panics. There is not much else to do in this case but it's
      useful for troubleshooting
    * x86_64/idt_inittab.S: allow to specify an interrupt stack for custom
      handlers
    * x86_64/locore.S: add double fault handler
    Message-Id: <20230729174514.1145656-1-luca@orpolo.org>

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

Summary of changes:
 i386/i386/idt.c      | 12 +++++++++++-
 i386/i386/ktss.c     |  4 +++-
 i386/i386/trap.c     |  6 ++++++
 x86_64/idt_inittab.S | 25 +++++++++++++------------
 x86_64/locore.S      | 15 +++++++++++++++
 5 files changed, 48 insertions(+), 14 deletions(-)


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