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| author |   Andy Lutomirski <luto@kernel.org> | 2016-07-14 13:22:57 -0700 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2016-07-15 10:26:30 +0200 |
| commit | 13d4ea097d18b419ad2a2b696063d44bf59acec0 (patch) | |
| tree | 099cb3a4ee73be56742d6abcd3d5e2bdd541f65b /arch/x86/include/asm/processor.h | |
| parent | x86/dumpstack: Rename thread_struct::sig_on_uaccess_error to sig_on_uaccess_err (diff) | |
| download | linux-dev-13d4ea097d18b419ad2a2b696063d44bf59acec0.tar.xz linux-dev-13d4ea097d18b419ad2a2b696063d44bf59acec0.zip | |
x86/uaccess: Move thread_info::addr_limit to thread_struct
struct thread_info is a legacy mess. To prepare for its partial removal,
move thread_info::addr_limit out.
As an added benefit, this way is simpler.
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: 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/15bee834d09402b47ac86f2feccdf6529f9bc5b0.1468527351.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/include/asm/processor.h')
| -rw-r--r-- | arch/x86/include/asm/processor.h | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h index cbdfe5f76347..89314ed74fee 100644 --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/processor.h @@ -371,6 +371,10 @@ extern unsigned int xstate_size; struct perf_event; +typedef struct { + unsigned long seg; +} mm_segment_t; + struct thread_struct { /* Cached TLS descriptors: */ struct desc_struct tls_array[GDT_ENTRY_TLS_ENTRIES]; @@ -419,6 +423,8 @@ struct thread_struct { /* Max allowed port in the bitmap, in bytes: */ unsigned io_bitmap_max; + mm_segment_t addr_limit; + unsigned int sig_on_uaccess_err:1; unsigned int uaccess_err:1; /* uaccess failed */ @@ -493,11 +499,6 @@ static inline void load_sp0(struct tss_struct *tss, #define set_iopl_mask native_set_iopl_mask #endif /* CONFIG_PARAVIRT */ -typedef struct { - unsigned long seg; -} mm_segment_t; - - /* Free all resources held by a thread. */ extern void release_thread(struct task_struct *); @@ -719,6 +720,7 @@ static inline void spin_lock_prefetch(const void *x) .sp0 = TOP_OF_INIT_STACK, \ .sysenter_cs = __KERNEL_CS, \ .io_bitmap_ptr = NULL, \ + .addr_limit = KERNEL_DS, \ } extern unsigned long thread_saved_pc(struct task_struct *tsk); @@ -768,8 +770,9 @@ extern unsigned long thread_saved_pc(struct task_struct *tsk); #define STACK_TOP TASK_SIZE #define STACK_TOP_MAX TASK_SIZE_MAX -#define INIT_THREAD { \ - .sp0 = TOP_OF_INIT_STACK \ +#define INIT_THREAD { \ + .sp0 = TOP_OF_INIT_STACK, \ + .addr_limit = KERNEL_DS, \ } /* |