On Mon, Dec 13, 2021 at 08:57:00PM +0800, Min Xu wrote: > BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3711 > > Per SDM, changing the mode of APIC timer (from one-shot to periodic or > vice versa) by writing to the timer LVT entry does not start the timer. > To start the timer, it is necessary to write to the initial-count > register. > > If initial-count is wrote before mode change, it's possible that timer > expired before the mode change. Thus failing the periodic mode. > > Cc: Jiewen Yao <jiewen....@intel.com> > Cc: Gerd Hoffmann <kra...@redhat.com> > Cc: Anthony Perard <anthony.per...@citrix.com> > Cc: Julien Grall <jul...@xen.org> > Cc: Eric Dong <eric.d...@intel.com> > Cc: Ray Ni <ray...@intel.com> > Signed-off-by: Min Xu <min.m...@intel.com>
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