This MR adds support for creating file mapping objects backed by large pages on Linux, by making the following changes:
## wineserver
* On Linux, `create_temp_file` will first attempt to use memfds as the backing fd. If it fails, it'll return to the current codepath, creating a temporary file in either the server or config directory.
* The created memfd will be sealed against writes, if the caller requesting the appropriate page protection flags.
* This removes the requirement that FDs be only created on filesystems/directories that aren't `noexec`.
* In the server method `create_mapping` , if large pages have been requested by the caller, hold that the calling thread's token holds `SeLockMemoryPrivilege` .
* Additionally, add `SeLockMemoryPrivilege` to the list of privileges enabled for the Administrator.
## `ntdll`
* Add `virtual_get_min_large_page_size` and its exported wrapper `wine_unix_get_min_large_page_size`.
* On Linux, the minimum page size is determined by going through `/sys/kernel/mm/hugepages`. If hugepage support was not detected, `STATUS_NOT_SUPPORTED` is returned instead. On other platforms, the older hard-coded value of 2\*1024\*1024 is returned instead.
* `NtCreateSection` will validate certain parameters if large pages are requested. Specifically, it will return STATUS_INVALID_PARAMETER if the requested mapping is not anonymous/unnamed, or the size is not a multiple of the minimum supported page size.
## `kernelbase`
* `GetLargePageMinimum` will use `wine_unix_get_min_large_page_size`.
## `kernel32/tests`
* Add new test test_large_page_file_mapping, which validates privilege enforcements and parameter validation while creating large pages backed file mapping obejcts. The tests are skipped if `GetLargePageMinimum` returns 0.
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v22: ntdll: Use PAGEMAP_SCAN to implement get_working_set_ex, if available.
kernel32: Add tests for large page mapping support.
ntdll: Support creating and mapping files backed by large pages (SEC_LARGE_PAGES).
https://gitlab.winehq.org/wine/wine/-/merge_requests/5769
Since `EVENT_SYSTEM_MINIMIZESTART` and `EVENT_SYSTEM_MINIMIZEEND` are implemented now (thanks to Esme), this is implementing visibility change events using them. We have to keep track of the browsers to iterate all the documents from the hook.
Note that I tried to refcount the per-thread hook and add it only when necessary (on a visiblity change listener), since it can slow down the entire prefix.
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v3: mshtml: Implement visibilitychange event.
https://gitlab.winehq.org/wine/wine/-/merge_requests/5861
Since `EVENT_SYSTEM_MINIMIZESTART` and `EVENT_SYSTEM_MINIMIZEEND` are implemented now (thanks to Esme), this is implementing visibility change events using them. We have to keep track of the browsers to iterate all the documents from the hook.
Note that I tried to refcount the per-thread hook and add it only when necessary (on a visiblity change listener), since it can slow down the entire prefix.
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v2: mshtml: Implement visibilitychange event.
https://gitlab.winehq.org/wine/wine/-/merge_requests/5861