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Kernel: Aggregate TLB flush requests for Regions for SMP

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Rather than sending one TLB flush request for each page,
aggregate them so that we're not spamming the other
processors with FlushTLB IPIs.
This commit is contained in:
Tom 2020-07-06 12:47:08 -06:00 • committed by Andreas Kling
parent 56126d7a45
commit 06d50f64b0
3 changed files with 28 additions and 13 deletions
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10
Kernel/VM/Region.h
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@ -117,6 +117,11 @@ public:
{
return (vaddr - m_range.base()).get() / PAGE_SIZE;
}
VirtualAddress vaddr_from_page_index(size_t page_index) const
{
return vaddr().offset(page_index * PAGE_SIZE);
}
size_t first_page_index() const
{
@ -151,7 +156,6 @@ public:
}
bool commit();
bool commit(size_t page_index);
size_t amount_resident() const;
size_t amount_shared() const;
@ -175,7 +179,6 @@ public:
void unmap(ShouldDeallocateVirtualMemoryRange = ShouldDeallocateVirtualMemoryRange::Yes);
void remap();
void remap_page(size_t index);
// For InlineLinkedListNode
Region* m_next { nullptr };
@ -197,6 +200,9 @@ private:
m_access &= ~access;
}
bool commit(size_t page_index);
void remap_page(size_t index, bool with_flush = true);
PageFaultResponse handle_cow_fault(size_t page_index);
PageFaultResponse handle_inode_fault(size_t page_index);
PageFaultResponse handle_zero_fault(size_t page_index);