mirrors/ladybird
0
0
Fork 0
mirror of https://github.com/LadybirdBrowser/ladybird.git synced 2025-07-29 04:09:13 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 9

Kernel: Make VM allocation atomic for userspace regions

Browse source 
This patch move AddressSpace (the per-process memory manager) to using
the new atomic "place" APIs in RegionTree as well, just like we did for
MemoryManager in the previous commit.

This required updating quite a few places where VM allocation and
actually committing a Region object to the AddressSpace were separated
by other code.

All you have to do now is call into AddressSpace once and it'll take
care of everything for you.
This commit is contained in:
Andreas Kling 2022-04-03 17:12:39 +02:00
commit 07f3d09c55
Notes: sideshowbarker 2024-07-17 14:31:40 +09:00
13 changed files with 84 additions and 91 deletions
Download patch file Download diff file Expand all files Collapse all files

5
Kernel/Thread.cpp
View file

@ -1419,10 +1419,9 @@ ErrorOr<void> Thread::make_thread_specific_region(Badge<Process>)
if (!process().m_master_tls_region)
return {};
auto range = TRY(process().address_space().try_allocate_range({}, thread_specific_region_size()));
auto* region = TRY(process().address_space().allocate_region(range, "Thread-specific", PROT_READ | PROT_WRITE));
auto* region = TRY(process().address_space().allocate_region({}, thread_specific_region_size(), PAGE_SIZE, "Thread-specific", PROT_READ | PROT_WRITE));
m_thread_specific_range = range;
m_thread_specific_range = region->range();
SmapDisabler disabler;
auto* thread_specific_data = (ThreadSpecificData*)region->vaddr().offset(align_up_to(process().m_master_tls_size, thread_specific_region_alignment())).as_ptr();