diff options
author | Peter Zijlstra <peterz@infradead.org> | 2015-09-09 03:12:44 -0400 |
---|---|---|
committer | Ingo Molnar <mingo@kernel.org> | 2015-09-14 05:09:33 -0400 |
commit | 0e2815de552a638295cfdaf0865e575573bf263e (patch) | |
tree | 1abf2cc3ec36f45f320ce3f5e3038c5c6a354a86 /arch/x86/include | |
parent | decb4c41159e1511197f2964da758fa7f2eeb741 (diff) |
x86/headers: Clean up too long lines
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: bp@alien8.de
Cc: brgerst@gmail.com
Cc: dvlasenk@redhat.com
Cc: luto@amacapital.net
Cc: mikko.rapeli@iki.fi
Cc: oleg@redhat.com
Link: http://lkml.kernel.org/r/20150909071244.GM3644@twins.programming.kicks-ass.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/include')
-rw-r--r-- | arch/x86/include/uapi/asm/sigcontext.h | 57 |
1 files changed, 31 insertions, 26 deletions
diff --git a/arch/x86/include/uapi/asm/sigcontext.h b/arch/x86/include/uapi/asm/sigcontext.h index 4411e6a8f8e7..d485232f1e9f 100644 --- a/arch/x86/include/uapi/asm/sigcontext.h +++ b/arch/x86/include/uapi/asm/sigcontext.h | |||
@@ -2,16 +2,16 @@ | |||
2 | #define _UAPI_ASM_X86_SIGCONTEXT_H | 2 | #define _UAPI_ASM_X86_SIGCONTEXT_H |
3 | 3 | ||
4 | /* | 4 | /* |
5 | * Linux signal context definitions. The sigcontext includes a complex hierarchy of CPU | 5 | * Linux signal context definitions. The sigcontext includes a complex |
6 | * and FPU state, available to user-space (on the stack) when a signal handler is | 6 | * hierarchy of CPU and FPU state, available to user-space (on the stack) when |
7 | * executed. | 7 | * a signal handler is executed. |
8 | * | 8 | * |
9 | * As over the years this ABI grew from its very simple roots towards supporting more and | 9 | * As over the years this ABI grew from its very simple roots towards |
10 | * more CPU state organically, some of the details (which were rather clever hacks back | 10 | * supporting more and more CPU state organically, some of the details (which |
11 | * in the days) became a bit quirky by today. | 11 | * were rather clever hacks back in the days) became a bit quirky by today. |
12 | * | 12 | * |
13 | * The current ABI includes flexible provisions for future extensions, so we won't have | 13 | * The current ABI includes flexible provisions for future extensions, so we |
14 | * to grow new quirks for quite some time. Promise! | 14 | * won't have to grow new quirks for quite some time. Promise! |
15 | */ | 15 | */ |
16 | 16 | ||
17 | #include <linux/compiler.h> | 17 | #include <linux/compiler.h> |
@@ -23,27 +23,32 @@ | |||
23 | 23 | ||
24 | /* | 24 | /* |
25 | * Bytes 464..511 in the current 512-byte layout of the FXSAVE/FXRSTOR frame | 25 | * Bytes 464..511 in the current 512-byte layout of the FXSAVE/FXRSTOR frame |
26 | * are reserved for SW usage. On CPUs supporting XSAVE/XRSTOR, these bytes | 26 | * are reserved for SW usage. On CPUs supporting XSAVE/XRSTOR, these bytes are |
27 | * are used to extend the fpstate pointer in the sigcontext, which now | 27 | * used to extend the fpstate pointer in the sigcontext, which now includes the |
28 | * includes the extended state information along with fpstate information. | 28 | * extended state information along with fpstate information. |
29 | * | 29 | * |
30 | * If sw_reserved.magic1 == FP_XSTATE_MAGIC1 then there's a sw_reserved.extended_size | 30 | * If sw_reserved.magic1 == FP_XSTATE_MAGIC1 then there's a |
31 | * bytes large extended context area present. (The last 32-bit word of this extended | 31 | * sw_reserved.extended_size bytes large extended context area present. (The |
32 | * area (at the fpstate+extended_size-FP_XSTATE_MAGIC2_SIZE address) is set to | 32 | * last 32-bit word of this extended area (at the |
33 | * fpstate+extended_size-FP_XSTATE_MAGIC2_SIZE address) is set to | ||
33 | * FP_XSTATE_MAGIC2 so that you can sanity check your size calculations.) | 34 | * FP_XSTATE_MAGIC2 so that you can sanity check your size calculations.) |
34 | * | 35 | * |
35 | * This extended area typically grows with newer CPUs that have larger and larger | 36 | * This extended area typically grows with newer CPUs that have larger and |
36 | * XSAVE areas. | 37 | * larger XSAVE areas. |
37 | */ | 38 | */ |
38 | struct _fpx_sw_bytes { | 39 | struct _fpx_sw_bytes { |
39 | /* If set to FP_XSTATE_MAGIC1 then this is an xstate context. 0 if a legacy frame. */ | 40 | /* |
41 | * If set to FP_XSTATE_MAGIC1 then this is an xstate context. | ||
42 | * 0 if a legacy frame. | ||
43 | */ | ||
40 | __u32 magic1; | 44 | __u32 magic1; |
41 | 45 | ||
42 | /* | 46 | /* |
43 | * Total size of the fpstate area: | 47 | * Total size of the fpstate area: |
44 | * | 48 | * |
45 | * - if magic1 == 0 then it's sizeof(struct _fpstate) | 49 | * - if magic1 == 0 then it's sizeof(struct _fpstate) |
46 | * - if magic1 == FP_XSTATE_MAGIC1 then it's sizeof(struct _xstate) plus extensions (if any) | 50 | * - if magic1 == FP_XSTATE_MAGIC1 then it's sizeof(struct _xstate) |
51 | * plus extensions (if any) | ||
47 | */ | 52 | */ |
48 | __u32 extended_size; | 53 | __u32 extended_size; |
49 | 54 | ||
@@ -66,13 +71,13 @@ struct _fpx_sw_bytes { | |||
66 | /* | 71 | /* |
67 | * As documented in the iBCS2 standard: | 72 | * As documented in the iBCS2 standard: |
68 | * | 73 | * |
69 | * The first part of "struct _fpstate" is just the normal i387 | 74 | * The first part of "struct _fpstate" is just the normal i387 hardware setup, |
70 | * hardware setup, the extra "status" word is used to save the | 75 | * the extra "status" word is used to save the coprocessor status word before |
71 | * coprocessor status word before entering the handler. | 76 | * entering the handler. |
72 | * | 77 | * |
73 | * The FPU state data structure has had to grow to accommodate the | 78 | * The FPU state data structure has had to grow to accommodate the extended FPU |
74 | * extended FPU state required by the Streaming SIMD Extensions. | 79 | * state required by the Streaming SIMD Extensions. There is no documented |
75 | * There is no documented standard to accomplish this at the moment. | 80 | * standard to accomplish this at the moment. |
76 | */ | 81 | */ |
77 | 82 | ||
78 | /* 10-byte legacy floating point register: */ | 83 | /* 10-byte legacy floating point register: */ |
@@ -137,8 +142,8 @@ struct _fpstate_32 { | |||
137 | * 'struct _fpstate' so that you can always assume the _fpstate portion | 142 | * 'struct _fpstate' so that you can always assume the _fpstate portion |
138 | * exists so that you can check the magic value. | 143 | * exists so that you can check the magic value. |
139 | * | 144 | * |
140 | * Note2: Reserved fields may someday contain valuable data. Always save/restore | 145 | * Note2: Reserved fields may someday contain valuable data. Always |
141 | * them when you change signal frames. | 146 | * save/restore them when you change signal frames. |
142 | */ | 147 | */ |
143 | struct _fpstate_64 { | 148 | struct _fpstate_64 { |
144 | __u16 cwd; | 149 | __u16 cwd; |