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gpu: Rewrite virtual memory manager using PageTable.

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This commit is contained in:
bunnei
2019-03-03 23:54:16 -05:00
parent 241563d15c
commit 22d3dfbcd4
13 changed files with 497 additions and 228 deletions
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6
src/common/page_table.h
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@ -21,6 +21,8 @@ enum class PageType : u8 {
RasterizerCachedMemory,
/// Page is mapped to a I/O region. Writing and reading to this page is handled by functions.
Special,
/// Page is allocated for use.
Allocated,
};
struct SpecialRegion {
@ -66,7 +68,7 @@ struct PageTable {
* Contains MMIO handlers that back memory regions whose entries in the `attribute` vector is
* of type `Special`.
*/
boost::icl::interval_map<VAddr, std::set<SpecialRegion>> special_regions;
boost::icl::interval_map<u64, std::set<SpecialRegion>> special_regions;
/**
* Vector of fine grained page attributes. If it is set to any value other than `Memory`, then
@ -74,6 +76,8 @@ struct PageTable {
*/
std::vector<PageType> attributes;
std::vector<u64> backing_addr;
const std::size_t page_size_in_bits{};
};