diff options
| author | Benjamin Berg <benjamin.berg@intel.com> | 2024-07-03 15:45:30 +0200 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2024-07-03 17:09:49 +0200 |
| commit | 7911b650a0708a3ee3412d80838b9574b21a53c8 (patch) | |
| tree | 5fabae2329b2f660020b4e55c61492ebe559c777 /arch/um/include/asm | |
| parent | 6d8992e49e2aed3ee2d73b88050f40f26ae6bf86 (diff) | |
um: remove LDT support
The current LDT code has a few issues that mean it should be redone in a
different way once we always start with a fresh MM even when cloning.
In a new and better world, the kernel would just ensure its own LDT is
clear at startup. At that point, all that is needed is a simple function
to populate the LDT from another MM in arch_dup_mmap combined with some
tracking of the installed LDT entries for each MM.
Note that the old implementation was even incorrect with regard to
reading, as it copied out the LDT entries in the internal format rather
than converting them to the userspace structure.
Removal should be fine as the LDT is not used for thread-local storage
anymore.
Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Link: https://patch.msgid.link/20240703134536.1161108-7-benjamin@sipsolutions.net
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'arch/um/include/asm')
| -rw-r--r-- | arch/um/include/asm/mmu.h | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/arch/um/include/asm/mmu.h b/arch/um/include/asm/mmu.h index f2923c767bb9..6e433098d8c3 100644 --- a/arch/um/include/asm/mmu.h +++ b/arch/um/include/asm/mmu.h @@ -7,15 +7,9 @@ #define __ARCH_UM_MMU_H #include <mm_id.h> -#include <asm/mm_context.h> typedef struct mm_context { struct mm_id id; - struct uml_arch_mm_context arch; } mm_context_t; -/* Avoid tangled inclusion with asm/ldt.h */ -extern long init_new_ldt(struct mm_context *to_mm, struct mm_context *from_mm); -extern void free_ldt(struct mm_context *mm); - #endif |