Dear Experts,
I find there is a macro in UefiCpuPkg\Include\Library\MtrrLib.h, line 30:
// Firmware need reserve 2 MTRR for OS
//
#define RESERVED_FIRMWARE_VARIABLE_MTRR_NUMBER 2
Sometimes MTRR may not be enough to use, so I want to know here why we need
reserve these 2 MTRR for OS? Does any document for it?
Thanks.
------------------
BR
winddy_zhang
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