diff options
| author | Matteo Gmür <matteo.gmuer1@ost.ch> | 2024-11-10 12:08:02 +0000 |
|---|---|---|
| committer | Matteo Gmür <matteo.gmuer1@ost.ch> | 2024-11-10 12:08:02 +0000 |
| commit | 8eb68ccb8837ba867550d16f967d9ef21921abe2 (patch) | |
| tree | b54b066642241060223db5a52ff7ba0ca4fcee3b /arch/x86_64/src/memory/cpu/msr.cpp | |
| parent | 45e7b24f19b3c4557f98996a44d8857d750ca5b3 (diff) | |
| download | kernel-8eb68ccb8837ba867550d16f967d9ef21921abe2.tar.xz kernel-8eb68ccb8837ba867550d16f967d9ef21921abe2.zip | |
Finish control register and adjust msr
Diffstat (limited to 'arch/x86_64/src/memory/cpu/msr.cpp')
| -rw-r--r-- | arch/x86_64/src/memory/cpu/msr.cpp | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/arch/x86_64/src/memory/cpu/msr.cpp b/arch/x86_64/src/memory/cpu/msr.cpp index 6e3d1d3..b83f902 100644 --- a/arch/x86_64/src/memory/cpu/msr.cpp +++ b/arch/x86_64/src/memory/cpu/msr.cpp @@ -4,7 +4,7 @@ namespace teachos::arch::memory::cpu { namespace { - constexpr uint32_t IA32_EFER_ADDRESS = 0xC0000080; + auto constexpr IA32_EFER_ADDRESS = 0xC0000080; } auto read_msr(uint32_t msr) -> uint64_t @@ -25,9 +25,7 @@ namespace teachos::arch::memory::cpu auto set_efer_bit(efer_flags flag) -> void { - uint64_t const efer = read_msr(IA32_EFER_ADDRESS); - write_msr(IA32_EFER_ADDRESS, static_cast<uint64_t>(flag) | efer); + auto const efer = read_msr(IA32_EFER_ADDRESS); + write_msr(IA32_EFER_ADDRESS, static_cast<std::underlying_type<efer_flags>::type>(flag) | efer); } - - auto enable_nxe_bit() -> void { set_efer_bit(efer_flags::NXE); } } // namespace teachos::arch::memory::cpu |