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Kernel/SMP: Make entering/leaving critical sections multi-processor safe

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By making these functions static we close a window where we could get
preempted after calling Processor::current() and move to another
processor.

Co-authored-by: Tom <tomut@yahoo.com>
This commit is contained in:
Andreas Kling 2021-08-10 01:16:08 +02:00
parent 369e3da6a2
commit 9babb92a4b
11 changed files with 82 additions and 53 deletions
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4
Kernel/Arch/x86/ScopedCritical.h
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@ -46,14 +46,14 @@ public:
{
VERIFY(m_valid);
m_valid = false;
Processor::current().leave_critical(m_prev_flags);
Processor::leave_critical(m_prev_flags);
}
void enter()
{
VERIFY(!m_valid);
m_valid = true;
Processor::current().enter_critical(m_prev_flags);
Processor::enter_critical(m_prev_flags);
}
private: