fergalmoran/ladybird
1
0
Fork 0
mirror of https://github.com/fergalmoran/ladybird.git synced 2026-01-04 07:36:50 +00:00
Code Issues Packages Projects Releases Wiki Activity

Kernel: Change Region allocation helpers

Browse Source 
We now can create a cacheable Region, so when map() is called, if a
Region is cacheable then all the virtual memory space being allocated
to it will be marked as not cache disabled.

In addition to that, OS components can create a Region that will be
mapped to a specific physical address by using the appropriate helper
method.
This commit is contained in:
Liav A
2020-01-09 23:29:31 +02:00
committed by Andreas Kling
parent b913e30011
commit d2b41010c5
7 changed files with 77 additions and 56 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
Kernel/Process.cpp
View File

@@ -1313,9 +1313,8 @@ extern "C" void asm_signal_trampoline_end(void);
void create_signal_trampolines()
{
InterruptDisabler disabler;
// NOTE: We leak this region.
auto* trampoline_region = MM.allocate_user_accessible_kernel_region(PAGE_SIZE, "Signal trampolines", Region::Access::Read | Region::Access::Write | Region::Access::Execute).leak_ptr();
auto* trampoline_region = MM.allocate_user_accessible_kernel_region(PAGE_SIZE, "Signal trampolines", Region::Access::Read | Region::Access::Write | Region::Access::Execute, false).leak_ptr();
g_return_to_ring3_from_signal_trampoline = trampoline_region->vaddr();
u8* trampoline = (u8*)asm_signal_trampoline;