RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-05-31 15:28:11 +00:00
Code Issues Activity Actions

Kernel: Move CPU feature detection to Arch/x86/CPU.{cpp.h}

Browse source 
We now refuse to boot on machines that don't support PAE since all
of our paging code depends on it.

Also let's only enable SSE and PGE support if the CPU advertises it.
This commit is contained in:
Andreas Kling 2020-01-01 12:56:21 +01:00
parent 3d59db4be4
commit 5aeaab601e
6 changed files with 70 additions and 44 deletions
Download patch file Download diff file Expand all files Collapse all files

4
Kernel/VM/Region.cpp
View file

@ -223,7 +223,7 @@ void Region::remap_page(size_t index)
pte.set_writable(false);
else
pte.set_writable(is_writable());
if (MM.has_nx_support())
if (g_cpu_supports_nx)
pte.set_execute_disabled(!is_executable());
pte.set_user_allowed(is_user_accessible());
m_page_directory->flush(page_vaddr);
@ -273,7 +273,7 @@ void Region::map(PageDirectory& page_directory)
pte.set_writable(false);
else
pte.set_writable(is_writable());
if (MM.has_nx_support())
if (g_cpu_supports_nx)
pte.set_execute_disabled(!is_executable());
} else {
pte.set_physical_page_base(0);