3654c4623c9b37ddc64426995fa399d8626b7ced
The MTRR calculation algorithm contains a bug that when left subtraction cannot produce better MTRR solution, it forgets to restore the BaseAddress/Length so that MtrrLibGetMtrrNumber() returns bigger value of actual required MTRR numbers. As a result, the MtrrLib reports OutOfResource but actually the MTRR is enough. MEMORY_RANGE mC[] = { 0, 0x100000, CacheUncacheable, 0x100000, 0x89F00000, CacheWriteBack, 0x8A000000, 0x75000000, CacheUncacheable, 0xFF000000, 0x01000000, CacheWriteProtected, 0x100000000, 0x7F00000000, CacheUncacheable, 0xFC240000, 0x2000, CacheWriteCombining // <-- trigger the error }; Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com> Reviewed-by: Jeff Fan <jeff.fan@intel.com>
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