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gpu: address extended guest memory without widening dense cache tables

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This commit is contained in:
nmzik
2026-09-28 16:32:32 +04:00
parent c91fe80d64
commit 2016f8e2fe
12 changed files with 81 additions and 34 deletions
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tests/MemoryTrackerTests.cpp
+9 -2
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@@ -219,17 +219,24 @@ void TestRangeSet() {
void TestGuestRange() {
constexpr GuestRange empty{};
constexpr GuestRange first_byte{1, 1};
constexpr GuestRange last_byte{TRACKER_ADDRESS_SIZE - 1, 1};
constexpr uint64_t extended_end = Libs::LibKernel::Memory::kExtendedMemoryBase +
Libs::LibKernel::Memory::kExtendedMemorySize;
constexpr GuestRange last_byte{extended_end - 1, 1};
static_assert(empty.Empty() && !empty.Valid() && empty.ValidOrEmpty());
static_assert(!first_byte.Empty() && first_byte.Valid() &&
first_byte.ValidOrEmpty() && first_byte.End() == 2);
static_assert(last_byte.Valid() && last_byte.End() == TRACKER_ADDRESS_SIZE);
static_assert(last_byte.Valid() && last_byte.End() == extended_end);
Check(!GuestRange{0, 1}.Empty() && !GuestRange{0, 1}.ValidOrEmpty(),
"zero-address nonempty guest range is rejected");
Check(!GuestRange{1, 0}.Empty() && !GuestRange{1, 0}.ValidOrEmpty(),
"nonzero-address empty guest range is rejected");
Check(GuestRange{Libs::LibKernel::Memory::kExtendedMemoryBase, 1}.Valid() &&
!GuestRange{Libs::Graphics::LOWER_ADDRESS_SIZE, 1}.Valid() &&
!GuestRange{Libs::LibKernel::Memory::kExtendedMemoryBase - 1, 2}.Valid() &&
!GuestRange{extended_end - 1, 2}.Valid(),
"extended range and gap boundaries are enforced");
Check(!GuestRange{TRACKER_ADDRESS_SIZE, 1}.Valid(),
"first address beyond the guest range is rejected");
Check(!GuestRange{TRACKER_ADDRESS_SIZE - 1, 2}.Valid(),