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Kernel/aarch64: Implement Thread Local Storage

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This commit adds Processor::set_thread_specific_data, and this function
is used to factor out architecture specific implementation of setting
the thread specific data. This function is implemented for
aarch64 and x86_64, and the callsites are changed to use this function
instead.
This commit is contained in:
Timon Kruiper 2023-02-15 19:49:37 +01:00 • committed by Jelle Raaijmakers
parent 7d0917f50b
commit cfd73e5d9f
6 changed files with 24 additions and 6 deletions
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9
Kernel/Arch/x86_64/Processor.cpp
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@ -1543,8 +1543,7 @@ extern "C" void enter_thread_context(Thread* from_thread, Thread* to_thread)
}
auto& processor = Processor::current();
MSR fs_base_msr(MSR_FS_BASE);
fs_base_msr.set(to_thread->thread_specific_data().get());
Processor::set_thread_specific_data(to_thread->thread_specific_data());
if (from_regs.cr3 != to_regs.cr3)
write_cr3(to_regs.cr3);
@ -1887,4 +1886,10 @@ UNMAP_AFTER_INIT void Processor::initialize_context_switching(Thread& initial_th
VERIFY_NOT_REACHED();
}
void Processor::set_thread_specific_data(VirtualAddress thread_specific_data)
{
MSR fs_base_msr(MSR_FS_BASE);
fs_base_msr.set(thread_specific_data.get());
}
}