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x86/headers: Clean up too long lines

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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>
This commit is contained in:
Peter Zijlstra 2015-09-09 09:12:44 +02:00 committed by Ingo Molnar
parent decb4c4115
commit 0e2815de55
1 changed files with 31 additions and 26 deletions
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57
arch/x86/include/uapi/asm/sigcontext.h
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@ -2,16 +2,16 @@
#define _UAPI_ASM_X86_SIGCONTEXT_H
/*
* Linux signal context definitions. The sigcontext includes a complex hierarchy of CPU
* and FPU state, available to user-space (on the stack) when a signal handler is
* executed.
* Linux signal context definitions. The sigcontext includes a complex
* hierarchy of CPU and FPU state, available to user-space (on the stack) when
* a signal handler is executed.
*
* As over the years this ABI grew from its very simple roots towards supporting more and
* more CPU state organically, some of the details (which were rather clever hacks back
* in the days) became a bit quirky by today.
* As over the years this ABI grew from its very simple roots towards
* supporting more and more CPU state organically, some of the details (which
* were rather clever hacks back in the days) became a bit quirky by today.
*
* The current ABI includes flexible provisions for future extensions, so we won't have
* to grow new quirks for quite some time. Promise!
* The current ABI includes flexible provisions for future extensions, so we
* won't have to grow new quirks for quite some time. Promise!
*/
#include <linux/compiler.h>
@ -23,27 +23,32 @@
/*
* Bytes 464..511 in the current 512-byte layout of the FXSAVE/FXRSTOR frame
* are reserved for SW usage. On CPUs supporting XSAVE/XRSTOR, these bytes
* are used to extend the fpstate pointer in the sigcontext, which now
* includes the extended state information along with fpstate information.
* are reserved for SW usage. On CPUs supporting XSAVE/XRSTOR, these bytes are
* used to extend the fpstate pointer in the sigcontext, which now includes the
* extended state information along with fpstate information.
*
* If sw_reserved.magic1 == FP_XSTATE_MAGIC1 then there's a sw_reserved.extended_size
* bytes large extended context area present. (The last 32-bit word of this extended
* area (at the fpstate+extended_size-FP_XSTATE_MAGIC2_SIZE address) is set to
* If sw_reserved.magic1 == FP_XSTATE_MAGIC1 then there's a
* sw_reserved.extended_size bytes large extended context area present. (The
* last 32-bit word of this extended area (at the
* fpstate+extended_size-FP_XSTATE_MAGIC2_SIZE address) is set to
* FP_XSTATE_MAGIC2 so that you can sanity check your size calculations.)
*
* This extended area typically grows with newer CPUs that have larger and larger
* XSAVE areas.
* This extended area typically grows with newer CPUs that have larger and
* larger XSAVE areas.
*/
struct _fpx_sw_bytes {
/* If set to FP_XSTATE_MAGIC1 then this is an xstate context. 0 if a legacy frame. */
/*
* If set to FP_XSTATE_MAGIC1 then this is an xstate context.
* 0 if a legacy frame.
*/
__u32 magic1;
/*
* Total size of the fpstate area:
*
* - if magic1 == 0 then it's sizeof(struct _fpstate)
* - if magic1 == FP_XSTATE_MAGIC1 then it's sizeof(struct _xstate) plus extensions (if any)
* - if magic1 == FP_XSTATE_MAGIC1 then it's sizeof(struct _xstate)
* plus extensions (if any)
*/
__u32 extended_size;
@ -66,13 +71,13 @@ struct _fpx_sw_bytes {
/*
* As documented in the iBCS2 standard:
*
* The first part of "struct _fpstate" is just the normal i387
* hardware setup, the extra "status" word is used to save the
* coprocessor status word before entering the handler.
* The first part of "struct _fpstate" is just the normal i387 hardware setup,
* the extra "status" word is used to save the coprocessor status word before
* entering the handler.
*
* The FPU state data structure has had to grow to accommodate the
* extended FPU state required by the Streaming SIMD Extensions.
* There is no documented standard to accomplish this at the moment.
* The FPU state data structure has had to grow to accommodate the extended FPU
* state required by the Streaming SIMD Extensions. There is no documented
* standard to accomplish this at the moment.
*/
/* 10-byte legacy floating point register: */
@ -137,8 +142,8 @@ struct _fpstate_32 {
* 'struct _fpstate' so that you can always assume the _fpstate portion
* exists so that you can check the magic value.
*
* Note2: Reserved fields may someday contain valuable data. Always save/restore
* them when you change signal frames.
* Note2: Reserved fields may someday contain valuable data. Always
* save/restore them when you change signal frames.
*/
struct _fpstate_64 {
__u16 cwd;