CVS commit: src/sys/arch

["Manuel Bouyer" <bouyer%netbsd.org@localhost>]

Module Name:    src
Committed By:   bouyer
Date:           Mon Jul 14 21:34:48 UTC 2025

Modified Files:
        src/sys/arch/i386/i386: i386_trap.S
        src/sys/arch/x86/x86: x86_machdep.c

Log Message:
Fix fallout from
https://mail-index.netbsd.org/source-changes/2025/06/20/msg157251.html
trap() may return with interrupts disabled to avoid preemption
before the iret. But on XENPV i386 it seems that iret doesn't reenable events
(or at last doesn't in some case). To fix this,
- in i386 calltrap, move a #ifdef XENPV code reenabling interrupts so that
  it is always called before returning
- in cpu_kpreempt_exit(), handle calltrap() the same way copyfunc is; that
  is reload the pmap if we got preempted here (only for XENPV i386)


To generate a diff of this commit:
cvs rdiff -u -r1.23 -r1.24 src/sys/arch/i386/i386/i386_trap.S
cvs rdiff -u -r1.158 -r1.159 src/sys/arch/x86/x86/x86_machdep.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.