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authorAndy Lutomirski <luto@kernel.org>2016-09-14 00:29:21 +0300
committerIngo Molnar <mingo@kernel.org>2016-09-15 09:25:12 +0300
commitb9d989c7218ac922185d82ad46f3e58b27a4bea9 (patch)
tree91f4d00f2330f4c26debb445afbc386a8308e950 /arch/x86/include/asm/syscall.h
parentd4b80afbba49e968623330f1336da8c724da8aad (diff)
downloadlinux-b9d989c7218ac922185d82ad46f3e58b27a4bea9.tar.xz
x86/asm: Move the thread_info::status field to thread_struct
Because sched.h and thread_info.h are a tangled mess, I turned in_compat_syscall() into a macro. If we had current_thread_struct() or similar and we could use it from thread_info.h, then this would be a bit cleaner. Signed-off-by: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Jann Horn <jann@thejh.net> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/ccc8a1b2f41f9c264a41f771bb4a6539a642ad72.1473801993.git.luto@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/include/asm/syscall.h')
-rw-r--r--arch/x86/include/asm/syscall.h20
1 files changed, 5 insertions, 15 deletions
diff --git a/arch/x86/include/asm/syscall.h b/arch/x86/include/asm/syscall.h
index 4e23dd15c661..e3c95e8e61c5 100644
--- a/arch/x86/include/asm/syscall.h
+++ b/arch/x86/include/asm/syscall.h
@@ -60,7 +60,7 @@ static inline long syscall_get_error(struct task_struct *task,
* TS_COMPAT is set for 32-bit syscall entries and then
* remains set until we return to user mode.
*/
- if (task_thread_info(task)->status & (TS_COMPAT|TS_I386_REGS_POKED))
+ if (task->thread.status & (TS_COMPAT|TS_I386_REGS_POKED))
/*
* Sign-extend the value so (int)-EFOO becomes (long)-EFOO
* and will match correctly in comparisons.
@@ -116,7 +116,7 @@ static inline void syscall_get_arguments(struct task_struct *task,
unsigned long *args)
{
# ifdef CONFIG_IA32_EMULATION
- if (task_thread_info(task)->status & TS_COMPAT)
+ if (task->thread.status & TS_COMPAT)
switch (i) {
case 0:
if (!n--) break;
@@ -177,7 +177,7 @@ static inline void syscall_set_arguments(struct task_struct *task,
const unsigned long *args)
{
# ifdef CONFIG_IA32_EMULATION
- if (task_thread_info(task)->status & TS_COMPAT)
+ if (task->thread.status & TS_COMPAT)
switch (i) {
case 0:
if (!n--) break;
@@ -234,18 +234,8 @@ static inline void syscall_set_arguments(struct task_struct *task,
static inline int syscall_get_arch(void)
{
-#ifdef CONFIG_IA32_EMULATION
- /*
- * TS_COMPAT is set for 32-bit syscall entry and then
- * remains set until we return to user mode.
- *
- * x32 tasks should be considered AUDIT_ARCH_X86_64.
- */
- if (task_thread_info(current)->status & TS_COMPAT)
- return AUDIT_ARCH_I386;
-#endif
- /* Both x32 and x86_64 are considered "64-bit". */
- return AUDIT_ARCH_X86_64;
+ /* x32 tasks should be considered AUDIT_ARCH_X86_64. */
+ return in_ia32_syscall() ? AUDIT_ARCH_I386 : AUDIT_ARCH_X86_64;
}
#endif /* CONFIG_X86_32 */