diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2022-02-11 17:19:14 +0100 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2022-02-25 09:36:06 +0100 |
| commit | a5ad837843b63d4f0d90b5cd74dc8bc25a291cfd (patch) | |
| tree | 47e2d070e3cc549ab8c5cd43961f4630156a85d6 /arch/sparc/include/asm/switch_to_64.h | |
| parent | 5a06fcb15b43d1f7bf740c672950122331cb5655 (diff) | |
sparc64: remove CONFIG_SET_FS support
sparc64 uses address space identifiers to differentiate between kernel
and user space, using ASI_P for kernel threads but ASI_AIUS for normal
user space, with the option of changing between them.
As nothing really changes the ASI any more, just hardcode ASI_AIUS
everywhere. Kernel threads are not allowed to access __user pointers
anyway.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/sparc/include/asm/switch_to_64.h')
| -rw-r--r-- | arch/sparc/include/asm/switch_to_64.h | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/arch/sparc/include/asm/switch_to_64.h b/arch/sparc/include/asm/switch_to_64.h index b1d4e2e3210f..14f3c49bfdbc 100644 --- a/arch/sparc/include/asm/switch_to_64.h +++ b/arch/sparc/include/asm/switch_to_64.h @@ -20,10 +20,8 @@ do { \ */ #define switch_to(prev, next, last) \ do { save_and_clear_fpu(); \ - /* If you are tempted to conditionalize the following */ \ - /* so that ASI is only written if it changes, think again. */ \ __asm__ __volatile__("wr %%g0, %0, %%asi" \ - : : "r" (task_thread_info(next)->current_ds));\ + : : "r" (ASI_AIUS)); \ trap_block[current_thread_info()->cpu].thread = \ task_thread_info(next); \ __asm__ __volatile__( \ |