7 Jul
2020
7 Jul
'20
10:54 a.m.
Hi Simon,
On Mon, Jul 6, 2020 at 11:37 AM Simon Glass sjg@chromium.org wrote:
At present MTRRs are mirrored to the secondary CPUs only once, as those CPUs are started up. But U-Boot may add more MTRRs later, e.g. if it decides that a video console must be set up.
This series enhances the x86 multi-processor support to allow MTRRs to be updated at any time. It also updates the 'mtrr' command to support setting the MTRRs on CPUs other than the boot CPU.
Testing this series on Minnowmax, the "mtrr" command fails:
=> mtrr CPU 0: Failed to read CPU 0 (err=-110)
Could you please take a look?
Regards, Bin