[SCM] GNU Mach branch, master, updated. v1.8-393-ge2fcf261

[Samuel Thibault]

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commit e2fcf261076bfe00eed678dcfd2f86b4854b5516
Author: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date:   Sat Sep 17 20:05:26 2022 +0200

    interrupt: Fix saving irq/ipl when linux drivers are disabled
    
    When Linux drivers are disabled, in hardclock() the linux_timer_intr()
    call is dropped, and gcc can tail-recursion-optimize the call to
    clock_interrupt(). To do so, it overwrites the hardclock() parameters to
    suit the clock_interrupt parameters layout. This however means it thrashes
    the backups that the interrupt() function had made of irq/ipl, leading to
    mayhem.
    
    interrupt should thus really properly separate its irq/ipl backups from the
    interrupt function parameters.
    
    Thanks a lot to Etienne Brateau for the tricky investigation!

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

Summary of changes:
 i386/i386at/interrupt.S | 51 +++++++++++++++++++++++++++++++++++--------------
 x86_64/interrupt.S      | 44 +++++++++++++++++++++++++++++-------------
 2 files changed, 68 insertions(+), 27 deletions(-)


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