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authorH. Peter Anvin <hpa@zytor.com>2012-02-06 21:03:09 (GMT)
committerH. Peter Anvin <hpa@zytor.com>2012-02-20 20:48:46 (GMT)
commit6bd330083e0e97b7ddc053459190bf3d5768ca83 (patch)
treec0fc2e703c4ce13b33cc364e5ad3eac712b57fb7 /arch/x86/kernel/process_64.c
parentcf420048b3b2af9ce928d35cc5455c646c9dd2f7 (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.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
index 9b9fe4a..0e900d0 100644
--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c
@@ -508,6 +508,7 @@ void set_personality_64bit(void)
/* Make sure to be in 64bit mode */
clear_thread_flag(TIF_IA32);
+ clear_thread_flag(TIF_ADDR32);
/* Ensure the corresponding mm is not marked. */
if (current->mm)
@@ -526,6 +527,7 @@ void set_personality_ia32(void)
/* Make sure to be in 32bit mode */
set_thread_flag(TIF_IA32);
+ set_thread_flag(TIF_ADDR32);
current->personality |= force_personality32;
/* Mark the associated mm as containing 32-bit tasks. */

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