linux-kernel - [PATCH 08/15] x86/headers: Convert uses of _fpstate_ia32 to _fpstate

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Message-Id: <1441438363-9999-9-git-send-email-mingo@kernel.org>
Date:	Sat,  5 Sep 2015 09:32:36 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	linux-kernel@...r.kernel.org
Cc:	Mikko Rapeli <mikko.rapeli@....fi>,
	Andy Lutomirski <luto@...capital.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Denys Vlasenko <dvlasenk@...hat.com>,
	Brian Gerst <brgerst@...il.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Borislav Petkov <bp@...en8.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Oleg Nesterov <oleg@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: [PATCH 08/15] x86/headers: Convert uses of _fpstate_ia32 to _fpstate_32

Remove uses of _fpstate_ia32 from the kernel, and move the legacy
_fpstate_ia32 definition to the user-space only portion of the
header.

Cc: Andy Lutomirski <luto@...capital.net>
Cc: Borislav Petkov <bp@...en8.de>
Cc: Brian Gerst <brgerst@...il.com>
Cc: Denys Vlasenko <dvlasenk@...hat.com>
Cc: H. Peter Anvin <hpa@...or.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Mikko Rapeli <mikko.rapeli@....fi>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: linux-kernel@...r.kernel.org
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 arch/x86/ia32/ia32_signal.c              | 2 +-
 arch/x86/include/asm/sigframe.h          | 2 +-
 arch/x86/include/uapi/asm/sigcontext.h   | 5 +++--
 arch/x86/include/uapi/asm/sigcontext32.h | 2 +-
 arch/x86/kernel/fpu/signal.c             | 4 ++--
 5 files changed, 8 insertions(+), 7 deletions(-)

diff --git a/arch/x86/ia32/ia32_signal.c b/arch/x86/ia32/ia32_signal.c
index ae3a29ae875b..805d76b21d95 100644
--- a/arch/x86/ia32/ia32_signal.c
+++ b/arch/x86/ia32/ia32_signal.c
@@ -327,7 +327,7 @@ static void __user *get_sigframe(struct ksignal *ksig, struct pt_regs *regs,
 		unsigned long fx_aligned, math_size;
 
 		sp = fpu__alloc_mathframe(sp, 1, &fx_aligned, &math_size);
-		*fpstate = (struct _fpstate_ia32 __user *) sp;
+		*fpstate = (struct _fpstate_32 __user *) sp;
 		if (copy_fpstate_to_sigframe(*fpstate, (void __user *)fx_aligned,
 				    math_size) < 0)
 			return (void __user *) -1L;
diff --git a/arch/x86/include/asm/sigframe.h b/arch/x86/include/asm/sigframe.h
index 67d3027520ee..38ade7255a21 100644
--- a/arch/x86/include/asm/sigframe.h
+++ b/arch/x86/include/asm/sigframe.h
@@ -31,7 +31,7 @@ struct sigframe_ia32 {
 	 * the offset of extramask[] in the sigframe and thus prevent any
 	 * legacy application accessing/modifying it.
 	 */
-	struct _fpstate_ia32 fpstate_unused;
+	struct _fpstate_32 fpstate_unused;
 #ifdef CONFIG_IA32_EMULATION
 	unsigned int extramask[_COMPAT_NSIG_WORDS-1];
 #else /* !CONFIG_IA32_EMULATION */
diff --git a/arch/x86/include/uapi/asm/sigcontext.h b/arch/x86/include/uapi/asm/sigcontext.h
index 85811167821f..ca542e37c783 100644
--- a/arch/x86/include/uapi/asm/sigcontext.h
+++ b/arch/x86/include/uapi/asm/sigcontext.h
@@ -165,8 +165,6 @@ struct _fpstate_64 {
 # define _fpstate _fpstate_64
 #endif
 
-#define _fpstate_ia32 _fpstate_32
-
 struct _header {
 	__u64				xfeatures;
 	__u64				reserved1[2];
@@ -198,6 +196,9 @@ struct _xstate {
  * field names but otherwise the same layout.
  */
 #ifndef __KERNEL__
+
+#define _fpstate_ia32 _fpstate_32
+
 # ifdef __i386__
 struct sigcontext {
 	__u16				gs, __gsh;
diff --git a/arch/x86/include/uapi/asm/sigcontext32.h b/arch/x86/include/uapi/asm/sigcontext32.h
index 19a89165ea1d..06c749b40263 100644
--- a/arch/x86/include/uapi/asm/sigcontext32.h
+++ b/arch/x86/include/uapi/asm/sigcontext32.h
@@ -26,7 +26,7 @@ struct sigcontext_ia32 {
        __u32				flags;
        __u32				sp_at_signal;
        __u16				ss, __ssh;
-       __u32				fpstate;	/* Pointer to 'struct _fpstate_ia32' */
+       __u32				fpstate;	/* Pointer to 'struct _fpstate_32' */
        __u32				oldmask;
        __u32				cr2;
 };
diff --git a/arch/x86/kernel/fpu/signal.c b/arch/x86/kernel/fpu/signal.c
index 50ec9af1bd51..24aac16603a2 100644
--- a/arch/x86/kernel/fpu/signal.c
+++ b/arch/x86/kernel/fpu/signal.c
@@ -56,7 +56,7 @@ static inline int save_fsave_header(struct task_struct *tsk, void __user *buf)
 	if (use_fxsr()) {
 		struct xregs_state *xsave = &tsk->thread.fpu.state.xsave;
 		struct user_i387_ia32_struct env;
-		struct _fpstate_ia32 __user *fp = buf;
+		struct _fpstate_32 __user *fp = buf;
 
 		convert_from_fxsr(&env, tsk);
 
@@ -165,7 +165,7 @@ int copy_fpstate_to_sigframe(void __user *buf, void __user *buf_fx, int size)
 	if (!static_cpu_has(X86_FEATURE_FPU))
 		return fpregs_soft_get(current, NULL, 0,
 			sizeof(struct user_i387_ia32_struct), NULL,
-			(struct _fpstate_ia32 __user *) buf) ? -1 : 1;
+			(struct _fpstate_32 __user *) buf) ? -1 : 1;
 
 	if (fpregs_active()) {
 		/* Save the live register state to the user directly. */
-- 
2.1.4

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