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Kernel: Avoid flushing the tlb if there's only one thread

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If we're flushing user space pointers and the process only has one
thread, we do not need to broadcast this to other processors as
they will all discard that request anyway.
This commit is contained in:
Tom 2021-02-13 11:37:39 -07:00 • committed by Andreas Kling
parent 40a5487bab
commit b445f15131
Notes: sideshowbarker 2024-07-18 22:22:04 +09:00
1 changed files with 1 additions and 1 deletions
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2
Kernel/Arch/i386/CPU.cpp
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@ -1703,7 +1703,7 @@ void Processor::flush_tlb_local(VirtualAddress vaddr, size_t page_count)
void Processor::flush_tlb(const PageDirectory* page_directory, VirtualAddress vaddr, size_t page_count)
{
if (s_smp_enabled)
if (s_smp_enabled && (!is_user_address(vaddr) || Process::current()->thread_count() > 1))
smp_broadcast_flush_tlb(page_directory, vaddr, page_count);
else
flush_tlb_local(vaddr, page_count);