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 <[email protected]> > Cc: Gerd Hoffmann <[email protected]> > Cc: Anthony Perard <[email protected]> > Cc: Julien Grall <[email protected]> > Cc: Eric Dong <[email protected]> > Cc: Ray Ni <[email protected]> > Signed-off-by: Min Xu <[email protected]>
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