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authorH. Peter Anvin <hpa@zytor.com>2012-02-14 21:56:49 (GMT)
committerH. Peter Anvin <hpa@zytor.com>2012-02-20 20:48:49 (GMT)
commitbb2127240c5595ae4ef7115494f51e973692f64e (patch)
tree5e1318eba21d79facf436673ae682f85f0b4d978 /arch/x86/kernel/process_64.c
parentd046ff8b30319d9aa38d877a0ba4206771e54346 (diff)
x32: Add a thread flag for x32 processes
An x32 process is *almost* the same thing as a 64-bit process with a 32-bit address limit, but there are a few minor differences -- in particular core dumps are 32 bits and signal handling is different. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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 0e900d0..5fe2fba 100644
--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c
@@ -509,6 +509,7 @@ void set_personality_64bit(void)
/* Make sure to be in 64bit mode */
clear_thread_flag(TIF_IA32);
clear_thread_flag(TIF_ADDR32);
+ clear_thread_flag(TIF_X32);
/* Ensure the corresponding mm is not marked. */
if (current->mm)
@@ -528,6 +529,7 @@ void set_personality_ia32(void)
/* Make sure to be in 32bit mode */
set_thread_flag(TIF_IA32);
set_thread_flag(TIF_ADDR32);
+ clear_thread_flag(TIF_X32);
current->personality |= force_personality32;
/* Mark the associated mm as containing 32-bit tasks. */

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