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Kernel: Consolidate features into CPUFeature enum

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This allows us to consolidate printing out all the CPU features
into one log statement. Also expose them in /proc/cpuinfo
This commit is contained in:
Tom 2020-07-03 10:23:09 -06:00 • committed by Andreas Kling
parent e373e5f007
commit 9b4e6f6a23
9 changed files with 197 additions and 145 deletions
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2
Kernel/VM/MemoryManager.cpp
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@ -80,7 +80,7 @@ void MemoryManager::protect_kernel_image()
pte.set_writable(false);
}
if (g_cpu_supports_nx) {
if (Processor::current().has_feature(CPUFeature::NX)) {
// Disable execution of the kernel data and bss segments.
for (size_t i = (FlatPtr)&start_of_kernel_data; i < (FlatPtr)&end_of_kernel_bss; i += PAGE_SIZE) {
auto& pte = ensure_pte(kernel_page_directory(), VirtualAddress(i));

2
Kernel/VM/Region.cpp
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@ -237,7 +237,7 @@ void Region::map_individual_page_impl(size_t page_index)
pte.set_writable(false);
else
pte.set_writable(is_writable());
if (g_cpu_supports_nx)
if (Processor::current().has_feature(CPUFeature::NX))
pte.set_execute_disabled(!is_executable());
pte.set_user_allowed(is_user_accessible());
#ifdef MM_DEBUG