diff options
author | H. Peter Anvin <hpa@zytor.com> | 2012-02-06 16:03:09 -0500 |
---|---|---|
committer | H. Peter Anvin <hpa@zytor.com> | 2012-02-20 15:48:46 -0500 |
commit | 6bd330083e0e97b7ddc053459190bf3d5768ca83 (patch) | |
tree | c0fc2e703c4ce13b33cc364e5ad3eac712b57fb7 /arch/x86/kernel/process_64.c | |
parent | cf420048b3b2af9ce928d35cc5455c646c9dd2f7 (diff) |
x86: Factor out TIF_IA32 from 32-bit address space
Factor out IA32 (compatibility instruction set) from 32-bit address
space in the thread_info flags; this is a precondition patch for x32
support.
Originally-by: H. J. Lu <hjl.tools@gmail.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Link: http://lkml.kernel.org/n/tip-4pr1xnnksprt7t0h3w5fw4rv@git.kernel.org
Diffstat (limited to 'arch/x86/kernel/process_64.c')
-rw-r--r-- | arch/x86/kernel/process_64.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c index 9b9fe4a85c87..0e900d09e232 100644 --- a/arch/x86/kernel/process_64.c +++ b/arch/x86/kernel/process_64.c | |||
@@ -508,6 +508,7 @@ void set_personality_64bit(void) | |||
508 | 508 | ||
509 | /* Make sure to be in 64bit mode */ | 509 | /* Make sure to be in 64bit mode */ |
510 | clear_thread_flag(TIF_IA32); | 510 | clear_thread_flag(TIF_IA32); |
511 | clear_thread_flag(TIF_ADDR32); | ||
511 | 512 | ||
512 | /* Ensure the corresponding mm is not marked. */ | 513 | /* Ensure the corresponding mm is not marked. */ |
513 | if (current->mm) | 514 | if (current->mm) |
@@ -526,6 +527,7 @@ void set_personality_ia32(void) | |||
526 | 527 | ||
527 | /* Make sure to be in 32bit mode */ | 528 | /* Make sure to be in 32bit mode */ |
528 | set_thread_flag(TIF_IA32); | 529 | set_thread_flag(TIF_IA32); |
530 | set_thread_flag(TIF_ADDR32); | ||
529 | current->personality |= force_personality32; | 531 | current->personality |= force_personality32; |
530 | 532 | ||
531 | /* Mark the associated mm as containing 32-bit tasks. */ | 533 | /* Mark the associated mm as containing 32-bit tasks. */ |