[Bug 45667] New: League of Legends 8.15+ fails due to missing implementation of NtQueryVirtualMemory (MemoryWorkingSetExInformation)

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=45667

            Bug ID: 45667
           Summary: League of Legends 8.15+ fails due to missing
                    implementation of
                    NtQueryVirtualMemory(MemoryWorkingSetExInformation)
           Product: Wine
           Version: unspecified
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: wine-bugs at winehq.org
          Reporter: awesie at gmail.com
      Distribution: ---

Created attachment 62094
  --> https://bugs.winehq.org/attachment.cgi?id=62094
stub implementation

NtQueryVirtualMemory(MemoryWorkingSetExInformation) is used by League of
Legends on Vista+. The current staging implementation is a stub that returns an
error, which is insufficient.

Not an issue if Wine is running as Windows XP / 2003.

The attached patch adds a stub implementation for MemoryWorkingSetExInformation
that marks every passed in address as invalid. This appears to be sufficient
for the stub, but is obviously not correct.

I am not sure how to implement MemoryWorkingSetExInformation perfectly and
efficiently, because it requires knowing whether a page has ever been accessed
or not. I don't believe that Linux provides this information, so we would
probably need to mark _all_ pages as NOACCESS, handle the fault when accessed,
and mark the page as accessed.

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