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/freebsd-10.2-release/sys/i386/include/
H A Dpcb_ext.hdiff 150173 Thu Sep 15 17:30:08 MDT 2005 jhb Explicitly switch to the new TSS by updating the current CPU's TSS selector
and reloading it in i386_extend_pcb() rather than trying to force a context
switch to reload the TSS via the TDF_NEEDRESCHED flag. Optimizations to
avoid calling cpu_switch() when the new thread was identical to the old
thread defeated the attempt to force a TSS reload. Explicitly loading the
new TSS is what we really want to do anyway.

PR: i386/84842
Reported by: Alexander Best arundel at h3c dot de
MFC after: 1 week
Reviewed by: bde (mostly)
/freebsd-10.2-release/sys/i386/i386/
H A Dsys_machdep.cdiff 150173 Thu Sep 15 17:30:08 MDT 2005 jhb Explicitly switch to the new TSS by updating the current CPU's TSS selector
and reloading it in i386_extend_pcb() rather than trying to force a context
switch to reload the TSS via the TDF_NEEDRESCHED flag. Optimizations to
avoid calling cpu_switch() when the new thread was identical to the old
thread defeated the attempt to force a TSS reload. Explicitly loading the
new TSS is what we really want to do anyway.

PR: i386/84842
Reported by: Alexander Best arundel at h3c dot de
MFC after: 1 week
Reviewed by: bde (mostly)

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