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Diffstat (limited to 'src/cpu/x86/Kconfig')
| -rw-r--r-- | src/cpu/x86/Kconfig | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/cpu/x86/Kconfig b/src/cpu/x86/Kconfig index 5394cd023d..bcaf0bfad7 100644 --- a/src/cpu/x86/Kconfig +++ b/src/cpu/x86/Kconfig @@ -160,3 +160,13 @@ config SOC_SETS_MSRS help The SoC requires different access methods for reading and writing the MSRs. Use SoC specific routines to handle the MSR access. + +config RESERVE_MTRRS_FOR_OS + bool + default n + help + This option allows a platform to reserve 2 MTRRs for the OS usage. + The Intel SDM documents that the the first 6 MTRRs are intended for + the system BIOS and the last 2 are to be reserved for OS usage. + However, modern OSes use PAT to control cacheability instead of + using MTRRs. |