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Kernel: Remove "allow CPU caching" flag on VMObject

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This wasn't really thought-through, I was just trying anything to see
if it would make WindowServer faster. This doesn't seem to make much of
a difference either way, so let's just not do it for now.

It's easy to bring back if we think we need it in the future.
This commit is contained in:
Andreas Kling 2019-08-07 16:34:00 +02:00
parent 3364da388f
commit cb2d572a14
3 changed files with 1 additions and 8 deletions
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4
Kernel/VM/MemoryManager.cpp
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@ -675,8 +675,6 @@ void MemoryManager::remap_region_page(Region& region, unsigned page_index_in_reg
pte.set_writable(false);
else
pte.set_writable(region.is_writable());
pte.set_cache_disabled(!region.vmo().m_allow_cpu_caching);
pte.set_write_through(!region.vmo().m_allow_cpu_caching);
pte.set_user_allowed(region.is_user_accessible());
region.page_directory()->flush(page_vaddr);
#ifdef MM_DEBUG
@ -711,8 +709,6 @@ void MemoryManager::map_region_at_address(PageDirectory& page_directory, Region&
pte.set_writable(false);
else
pte.set_writable(region.is_writable());
pte.set_cache_disabled(!region.vmo().m_allow_cpu_caching);
pte.set_write_through(!region.vmo().m_allow_cpu_caching);
} else {
pte.set_physical_page_base(0);
pte.set_present(false);