SMAP will generated page faults when the kernel tries to access user pages unless overriden.
If SMAP is enabled, the override instructions are written where needed in memory with
binary "altcodepatches".
Support is enabled by default, might be disabled per safemode setting.
Change-Id: Ife26cd765056aeaf65b2ffa3cadd0dcf4e273a96
This change re-instates the change-log function (TRAC#13827) that was
dropped in earlier changes. Also now-disused API handling logic is
removed. A small code-style fix is made and the version of the
application has been incremented so that this version's logic can later
be detected by the HDS application server.
gcc does re-align the stack in the main() function prologue, however,
we still need to set the right alignment for other cases: thread entry,
.init and .fini code that is executed before main() is called or after
it has returned, and signal handlers which may use a separate stack.
Part of #10509
Tested on x86_64 and x86_gcc2, works on my machine and most likely fixes
that was most likely due to missing lock sync in previous ACPI upgrade.
* Redid some of kallisti5's work as it was easier to start from earlier
version.
* Evaluating 64 bit physical addressing on 32 bit Haiku again as this
was likely the cause of pagefaults (#12377):
"Implemented internal support for full 64-bit addresses that appear in all
Generic Address Structure (GAS) structures. Previously, only the lower 32
bits were used. Affects the use of GAS structures in the FADT and other
tables, as well as the GAS structures passed to the AcpiRead and
AcpiWrite public external interfaces that are used by drivers. Lv Zheng."
* Mostly bugfixes in ACPICA
With user buffer checks and copies about the same for every driver, it seems logical
to avoid duplicate this code.
Sponsored-by: https://liberapay.com/korli
- Some of the recent changes for memory management exposed a race
condition, where the teams window would potentially try to access
already freed objects on quit. Ensure we acquire references to the target
host so this doesn't happen.
AttributeClasses:
- Fix typo in get_attribute_name_classes which resulted in us not
handling DW_AT_linkage_name properly.
- Fix incorrect class specification for DW_AT_default_value due
to inconsistencies in the DWARF documentation (the table of attribute
classes indicates it is only a reference, but the detailed description
indicates it also being possible to be a flag or constant, both of
which gcc outputs).
DebugInfoEntries:
- Add accessor for DIEClassBaseType's inner types.
DwarfImageDebugInfo:
- When looking up types, create a basic target interface to pass on
to the type context. Otherwise, type lookups that required DWARF
expression evaluation would crash.
- When building the type name table, we now recursively walk a class's
inner types, and add them to the list as well. This omission would
cause the debugger to lack the type description for such classes,
and consequently be unable to display their details in the variables
view.
AbstractTable/Table/TreeTable:
- Let BColumnListView take care of deleting columns. The previous
approach was resulting in the columns being leaked.
Debugger:
- Don't detach the UI reference, as TeamDebugger will acquire its own.
GraphicalUserInterface:
- Cleanup of file panel handler.
SourceView:
- Clean up marker manager.
*Roster:
- Clean up registered objects in destructors.
GlobalTypeLookup:
- Clean up hash tables.
NetworkTargetHostInterfaceInfo:
- Fix reference handling for settings.
BListValueNode:
- BList's item count member is an int32. However, when the handler was reading
said variable, it was mistakenly reading the number of bytes corresponding to
to the address size of the architecture instead.This would cause the read to
fail, and consequently BList and/or BObjectList variables to not display
their contents properly on x86-64.
- Fix various cases where OpenHashTables weren't being cleared properly.
- Fix various reference counting errors.
- Simplify FileManager reference handling.
- Fix bug in LocatableDirectory where the directory named '/' would have its
name returned as empty. This would lead to failed lookups for entries already
in the table, and ultimately corrupted the hash table when deleting unused
entries, leading to #13939. This was previously never noticed due to the
entries not being freed properly.
- AbbreviationTable wasn't clearing its entries.
