system/serenity
system/serenity
1
0
Fork 0
mirror of https://github.com/SerenityOS/serenity synced 2024-10-15 20:33:10 +00:00
Code Issues Packages Projects Releases Wiki Activity

Kernel: Don't allocate kernel stack twice per thread :^)

Browse source
This commit is contained in:
Andreas Kling 2021-02-07 20:13:51 +01:00
parent 33c7017f6e
commit 2ec8b4e177
1 changed files with 1 additions and 7 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
Kernel/Thread.cpp
View file

@ -58,6 +58,7 @@ KResultOr<NonnullRefPtr<Thread>> Thread::try_create(NonnullRefPtr<Process> proce
auto kernel_stack_region = MM.allocate_kernel_region(default_kernel_stack_size, {}, Region::Access::Read | Region::Access::Write, false, AllocationStrategy::AllocateNow);
if (!kernel_stack_region)
return ENOMEM;
kernel_stack_region->set_stack(true);
return adopt(*new Thread(move(process), kernel_stack_region.release_nonnull()));
}
@ -109,13 +110,6 @@ Thread::Thread(NonnullRefPtr<Process> process, NonnullOwnPtr<Region> kernel_stac
m_tss.cr3 = m_process->page_directory().cr3();
m_kernel_stack_region = MM.allocate_kernel_region(default_kernel_stack_size, String::formatted("Kernel Stack (Thread {})", m_tid.value()), Region::Access::Read | Region::Access::Write, false, AllocationStrategy::AllocateNow);
if (!m_kernel_stack_region) {
// Abort creating this thread, was_created() will return false
return;
}
m_kernel_stack_region->set_stack(true);
m_kernel_stack_base = m_kernel_stack_region->vaddr().get();
m_kernel_stack_top = m_kernel_stack_region->vaddr().offset(default_kernel_stack_size).get() & 0xfffffff8u;