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test(agc): check that a Linux page query is answered from the page table 

Revoke a checked arena page with mprotect behind the registry and check
that the stored answer comes back, so the test fails without the cache.
Pass the gpu argument that GuestAllocations::Mutation::Add and Protect
now take.
This commit is contained in:
Dean Galvin 2026-10-10 23:00:41 +13:00
parent 49e9298706
commit d635d18967
1 changed files with 6 additions and 3 deletions
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9
core/libs/prx/libSceAgcDriver/tests/GuestAllocations.cpp
View File

@ -193,19 +193,22 @@ void RunUnmappedGapTests() {
Require(mmap(guest, 2 * page, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED, -1, 0) == guest, "cannot map the arena page test pages");
{
GuestAllocations::Mutation mutation;
mutation.Add(guest, 2 * page, true, true);
mutation.Add(guest, 2 * page, true, true, true);
}
Require(GuestMemory::Accessible(guest, page, true), "a mapped arena page is not writable");
Require(mprotect(guest, page, PROT_NONE) == 0, "cannot revoke the arena test page behind the registry");
Require(GuestMemory::Accessible(guest, page, true), "a checked arena page was queried again instead of read from the page table");
Require(mprotect(guest, page, PROT_READ | PROT_WRITE) == 0, "cannot restore the arena test page behind the registry");
Require(mprotect(guest + page, page, PROT_READ) == 0, "cannot protect the arena test's second page");
Require(!GuestMemory::Accessible(guest + page, page, true), "a check stored arena pages outside its range");
{
GuestAllocations::Mutation mutation;
mutation.Protect(guest + page, page, true, true, [&] { Require(mprotect(guest + page, page, PROT_READ | PROT_WRITE) == 0, "cannot restore the arena test's second page"); });
mutation.Protect(guest + page, page, true, true, true, [&] { Require(mprotect(guest + page, page, PROT_READ | PROT_WRITE) == 0, "cannot restore the arena test's second page"); });
}
Require(GuestMemory::Accessible(guest, 2 * page, true), "mapped arena pages are not writable");
{
GuestAllocations::Mutation mutation;
mutation.Protect(guest, page, true, false, [&] { Require(mprotect(guest, page, PROT_READ) == 0, "cannot protect the arena test page"); });
mutation.Protect(guest, page, true, false, true, [&] { Require(mprotect(guest, page, PROT_READ) == 0, "cannot protect the arena test page"); });
}
Require(!GuestMemory::Accessible(guest, page, true) && GuestMemory::Accessible(guest, page) && GuestMemory::Accessible(guest + page, page, true), "an arena page protected through the registry kept its old access");
{