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Kernel: Send only one TLB invalidation when creating a ByteRingBuffer

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Bananymous
2026-05-06 00:28:00 +03:00
parent 7553ede3b4
commit 62f5292f38
1 changed files with 8 additions and 8 deletions
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14
kernel/kernel/Memory/ByteRingBuffer.cpp
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@@ -25,10 +25,12 @@ namespace Kernel
const paddr_t paddr = Heap::get().take_free_page(); const paddr_t paddr = Heap::get().take_free_page();
if (paddr == 0) if (paddr == 0)
return BAN::Error::from_errno(ENOMEM); return BAN::Error::from_errno(ENOMEM);
PageTable::kernel().map_page_at(paddr, buffer->m_vaddr + i * PAGE_SIZE, PageTable::ReadWrite | PageTable::Present); PageTable::kernel().map_page_at(paddr, buffer->m_vaddr + i * PAGE_SIZE, PageTable::ReadWrite | PageTable::Present, PageTable::MemoryType::Normal, false);
PageTable::kernel().map_page_at(paddr, buffer->m_vaddr + size + i * PAGE_SIZE, PageTable::ReadWrite | PageTable::Present); PageTable::kernel().map_page_at(paddr, buffer->m_vaddr + size + i * PAGE_SIZE, PageTable::ReadWrite | PageTable::Present, PageTable::MemoryType::Normal, false);
} }
PageTable::kernel().invalidate_range(buffer->m_vaddr, page_count * 2, true);
return buffer; return buffer;
} }
@@ -36,13 +38,11 @@ namespace Kernel
{ {
if (m_vaddr == 0) if (m_vaddr == 0)
return; return;
for (size_t i = 0; i < m_capacity / PAGE_SIZE; i++) for (size_t i = 0; i < m_capacity / PAGE_SIZE; i++)
{ if (const paddr_t paddr = PageTable::kernel().physical_address_of(m_vaddr + i * PAGE_SIZE))
const paddr_t paddr = PageTable::kernel().physical_address_of(m_vaddr + i * PAGE_SIZE);
if (paddr == 0)
break;
Heap::get().release_page(paddr); Heap::get().release_page(paddr);
}
PageTable::kernel().unmap_range(m_vaddr, m_capacity * 2); PageTable::kernel().unmap_range(m_vaddr, m_capacity * 2);
} }