Merge branch 'work.uaccess' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull uaccess unification updates from Al Viro:
 "This is the uaccess unification pile. It's _not_ the end of uaccess
  work, but the next batch of that will go into the next cycle. This one
  mostly takes copy_from_user() and friends out of arch/* and gets the
  zero-padding behaviour in sync for all architectures.

  Dealing with the nocache/writethrough mess is for the next cycle;
  fortunately, that's x86-only. Same for cleanups in iov_iter.c (I am
  sold on access_ok() in there, BTW; just not in this pile), same for
  reducing __copy_... callsites, strn*... stuff, etc. - there will be a
  pile about as large as this one in the next merge window.

  This one sat in -next for weeks. -3KLoC"

* 'work.uaccess' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (96 commits)
  HAVE_ARCH_HARDENED_USERCOPY is unconditional now
  CONFIG_ARCH_HAS_RAW_COPY_USER is unconditional now
  m32r: switch to RAW_COPY_USER
  hexagon: switch to RAW_COPY_USER
  microblaze: switch to RAW_COPY_USER
  get rid of padding, switch to RAW_COPY_USER
  ia64: get rid of copy_in_user()
  ia64: sanitize __access_ok()
  ia64: get rid of 'segment' argument of __do_{get,put}_user()
  ia64: get rid of 'segment' argument of __{get,put}_user_check()
  ia64: add extable.h
  powerpc: get rid of zeroing, switch to RAW_COPY_USER
  esas2r: don't open-code memdup_user()
  alpha: fix stack smashing in old_adjtimex(2)
  don't open-code kernel_setsockopt()
  mips: switch to RAW_COPY_USER
  mips: get rid of tail-zeroing in primitives
  mips: make copy_from_user() zero tail explicitly
  mips: clean and reorder the forest of macros...
  mips: consolidate __invoke_... wrappers
  ...

18 files changed, 27 insertions, 41 deletions

diff --git a/arch/sparc/lib/GENcopy_from_user.S b/arch/sparc/lib/GENcopy_from_user.S
index 69a439fa2fc1..8aa16ef113f2 100644
--- a/arch/sparc/lib/GENcopy_from_user.S
+++ b/arch/sparc/lib/GENcopy_from_user.S
@@ -23,7 +23,7 @@
 #define PREAMBLE					\
 	rd		%asi, %g1;			\
 	cmp		%g1, ASI_AIUS;			\
-	bne,pn		%icc, ___copy_in_user;		\
+	bne,pn		%icc, raw_copy_in_user;		\
 	 nop
 #endif
 
diff --git a/arch/sparc/lib/GENcopy_to_user.S b/arch/sparc/lib/GENcopy_to_user.S
index 9947427ce354..311c8fa5e98e 100644
--- a/arch/sparc/lib/GENcopy_to_user.S
+++ b/arch/sparc/lib/GENcopy_to_user.S
@@ -27,7 +27,7 @@
 #define PREAMBLE					\
 	rd		%asi, %g1;			\
 	cmp		%g1, ASI_AIUS;			\
-	bne,pn		%icc, ___copy_in_user;		\
+	bne,pn		%icc, raw_copy_in_user;		\
 	 nop
 #endif
 
diff --git a/arch/sparc/lib/GENpatch.S b/arch/sparc/lib/GENpatch.S
index fab9e89f16bd..95e2f1f9e477 100644
--- a/arch/sparc/lib/GENpatch.S
+++ b/arch/sparc/lib/GENpatch.S
@@ -26,8 +26,8 @@
 	.type	generic_patch_copyops,#function
 generic_patch_copyops:
 	GEN_DO_PATCH(memcpy, GENmemcpy)
-	GEN_DO_PATCH(___copy_from_user, GENcopy_from_user)
-	GEN_DO_PATCH(___copy_to_user, GENcopy_to_user)
+	GEN_DO_PATCH(raw_copy_from_user, GENcopy_from_user)
+	GEN_DO_PATCH(raw_copy_to_user, GENcopy_to_user)
 	retl
 	 nop
 	.size	generic_patch_copyops,.-generic_patch_copyops
diff --git a/arch/sparc/lib/NG2copy_from_user.S b/arch/sparc/lib/NG2copy_from_user.S
index b79a6998d87c..0d8a018118c2 100644
--- a/arch/sparc/lib/NG2copy_from_user.S
+++ b/arch/sparc/lib/NG2copy_from_user.S
@@ -36,7 +36,7 @@
 #define PREAMBLE					\
 	rd		%asi, %g1;			\
 	cmp		%g1, ASI_AIUS;			\
-	bne,pn		%icc, ___copy_in_user;		\
+	bne,pn		%icc, raw_copy_in_user;		\
 	 nop
 #endif
 
diff --git a/arch/sparc/lib/NG2copy_to_user.S b/arch/sparc/lib/NG2copy_to_user.S
index dcec55f254ab..a7a0ea0d8a0b 100644
--- a/arch/sparc/lib/NG2copy_to_user.S
+++ b/arch/sparc/lib/NG2copy_to_user.S
@@ -45,7 +45,7 @@
 #define PREAMBLE					\
 	rd		%asi, %g1;			\
 	cmp		%g1, ASI_AIUS;			\
-	bne,pn		%icc, ___copy_in_user;		\
+	bne,pn		%icc, raw_copy_in_user;		\
 	 nop
 #endif
 
diff --git a/arch/sparc/lib/NG2patch.S b/arch/sparc/lib/NG2patch.S
index 28c36f06a6d1..56ccc19adde8 100644
--- a/arch/sparc/lib/NG2patch.S
+++ b/arch/sparc/lib/NG2patch.S
@@ -26,8 +26,8 @@
 	.type	niagara2_patch_copyops,#function
 niagara2_patch_copyops:
 	NG_DO_PATCH(memcpy, NG2memcpy)
-	NG_DO_PATCH(___copy_from_user, NG2copy_from_user)
-	NG_DO_PATCH(___copy_to_user, NG2copy_to_user)
+	NG_DO_PATCH(raw_copy_from_user, NG2copy_from_user)
+	NG_DO_PATCH(raw_copy_to_user, NG2copy_to_user)
 	retl
 	 nop
 	.size	niagara2_patch_copyops,.-niagara2_patch_copyops
diff --git a/arch/sparc/lib/NG4copy_from_user.S b/arch/sparc/lib/NG4copy_from_user.S
index 16a286c1a528..5bb506bd61fa 100644
--- a/arch/sparc/lib/NG4copy_from_user.S
+++ b/arch/sparc/lib/NG4copy_from_user.S
@@ -31,7 +31,7 @@
 #define PREAMBLE					\
 	rd		%asi, %g1;			\
 	cmp		%g1, ASI_AIUS;			\
-	bne,pn		%icc, ___copy_in_user;		\
+	bne,pn		%icc, raw_copy_in_user;		\
 	 nop
 #endif
 
diff --git a/arch/sparc/lib/NG4copy_to_user.S b/arch/sparc/lib/NG4copy_to_user.S
index 6b0276ffc858..a82d4d45fc1c 100644
--- a/arch/sparc/lib/NG4copy_to_user.S
+++ b/arch/sparc/lib/NG4copy_to_user.S
@@ -40,7 +40,7 @@
 #define PREAMBLE					\
 	rd		%asi, %g1;			\
 	cmp		%g1, ASI_AIUS;			\
-	bne,pn		%icc, ___copy_in_user;		\
+	bne,pn		%icc, raw_copy_in_user;		\
 	 nop
 #endif
 
diff --git a/arch/sparc/lib/NG4patch.S b/arch/sparc/lib/NG4patch.S
index a114cbcf2a48..3cc0f8cc95df 100644
--- a/arch/sparc/lib/NG4patch.S
+++ b/arch/sparc/lib/NG4patch.S
@@ -26,8 +26,8 @@
 	.type	niagara4_patch_copyops,#function
 niagara4_patch_copyops:
 	NG_DO_PATCH(memcpy, NG4memcpy)
-	NG_DO_PATCH(___copy_from_user, NG4copy_from_user)
-	NG_DO_PATCH(___copy_to_user, NG4copy_to_user)
+	NG_DO_PATCH(raw_copy_from_user, NG4copy_from_user)
+	NG_DO_PATCH(raw_copy_to_user, NG4copy_to_user)
 	retl
 	 nop
 	.size	niagara4_patch_copyops,.-niagara4_patch_copyops
diff --git a/arch/sparc/lib/NGcopy_from_user.S b/arch/sparc/lib/NGcopy_from_user.S
index 9cd42fcbc781..2333b6f3e824 100644
--- a/arch/sparc/lib/NGcopy_from_user.S
+++ b/arch/sparc/lib/NGcopy_from_user.S
@@ -25,7 +25,7 @@
 #define PREAMBLE					\
 	rd		%asi, %g1;			\
 	cmp		%g1, ASI_AIUS;			\
-	bne,pn		%icc, ___copy_in_user;		\
+	bne,pn		%icc, raw_copy_in_user;		\
 	 nop
 #endif
 
diff --git a/arch/sparc/lib/NGcopy_to_user.S b/arch/sparc/lib/NGcopy_to_user.S
index 5c358afd464e..07ba20bc4ea4 100644
--- a/arch/sparc/lib/NGcopy_to_user.S
+++ b/arch/sparc/lib/NGcopy_to_user.S
@@ -28,7 +28,7 @@
 #define PREAMBLE					\
 	rd		%asi, %g1;			\
 	cmp		%g1, ASI_AIUS;			\
-	bne,pn		%icc, ___copy_in_user;		\
+	bne,pn		%icc, raw_copy_in_user;		\
 	 nop
 #endif
 
diff --git a/arch/sparc/lib/NGpatch.S b/arch/sparc/lib/NGpatch.S
index 3b0674fc3366..62ccda7e7b38 100644
--- a/arch/sparc/lib/NGpatch.S
+++ b/arch/sparc/lib/NGpatch.S
@@ -26,8 +26,8 @@
 	.type	niagara_patch_copyops,#function
 niagara_patch_copyops:
 	NG_DO_PATCH(memcpy, NGmemcpy)
-	NG_DO_PATCH(___copy_from_user, NGcopy_from_user)
-	NG_DO_PATCH(___copy_to_user, NGcopy_to_user)
+	NG_DO_PATCH(raw_copy_from_user, NGcopy_from_user)
+	NG_DO_PATCH(raw_copy_to_user, NGcopy_to_user)
 	retl
 	 nop
 	.size	niagara_patch_copyops,.-niagara_patch_copyops
diff --git a/arch/sparc/lib/U1copy_from_user.S b/arch/sparc/lib/U1copy_from_user.S
index bb6ff73229e3..9a6e68a9bf4a 100644
--- a/arch/sparc/lib/U1copy_from_user.S
+++ b/arch/sparc/lib/U1copy_from_user.S
@@ -19,7 +19,7 @@
 	.text;			\
 	.align 4;
 
-#define FUNC_NAME		___copy_from_user
+#define FUNC_NAME		raw_copy_from_user
 #define LOAD(type,addr,dest)	type##a [addr] %asi, dest
 #define LOAD_BLK(addr,dest)	ldda [addr] ASI_BLK_AIUS, dest
 #define EX_RETVAL(x)		0
@@ -31,7 +31,7 @@
 #define PREAMBLE					\
 	rd		%asi, %g1;			\
 	cmp		%g1, ASI_AIUS;			\
-	bne,pn		%icc, ___copy_in_user;		\
+	bne,pn		%icc, raw_copy_in_user;		\
 	 nop;						\
 
 #include "U1memcpy.S"
diff --git a/arch/sparc/lib/U1copy_to_user.S b/arch/sparc/lib/U1copy_to_user.S
index ed92ce739558..d7b28491eddf 100644
--- a/arch/sparc/lib/U1copy_to_user.S
+++ b/arch/sparc/lib/U1copy_to_user.S
@@ -19,7 +19,7 @@
 	.text;			\
 	.align 4;
 
-#define FUNC_NAME		___copy_to_user
+#define FUNC_NAME		raw_copy_to_user
 #define STORE(type,src,addr)	type##a src, [addr] ASI_AIUS
 #define STORE_BLK(src,addr)	stda src, [addr] ASI_BLK_AIUS
 #define EX_RETVAL(x)		0
@@ -31,7 +31,7 @@
 #define PREAMBLE					\
 	rd		%asi, %g1;			\
 	cmp		%g1, ASI_AIUS;			\
-	bne,pn		%icc, ___copy_in_user;		\
+	bne,pn		%icc, raw_copy_in_user;		\
 	 nop;						\
 
 #include "U1memcpy.S"
diff --git a/arch/sparc/lib/U3copy_to_user.S b/arch/sparc/lib/U3copy_to_user.S
index c4ee858e352a..f48fb87fe9f2 100644
--- a/arch/sparc/lib/U3copy_to_user.S
+++ b/arch/sparc/lib/U3copy_to_user.S
@@ -31,7 +31,7 @@
 #define PREAMBLE					\
 	rd		%asi, %g1;			\
 	cmp		%g1, ASI_AIUS;			\
-	bne,pn		%icc, ___copy_in_user;		\
+	bne,pn		%icc, raw_copy_in_user;		\
 	 nop;						\
 
 #include "U3memcpy.S"
diff --git a/arch/sparc/lib/U3patch.S b/arch/sparc/lib/U3patch.S
index ecc302619a6e..91cd6539b6e1 100644
--- a/arch/sparc/lib/U3patch.S
+++ b/arch/sparc/lib/U3patch.S
@@ -26,8 +26,8 @@
 	.type	cheetah_patch_copyops,#function
 cheetah_patch_copyops:
 	ULTRA3_DO_PATCH(memcpy, U3memcpy)
-	ULTRA3_DO_PATCH(___copy_from_user, U3copy_from_user)
-	ULTRA3_DO_PATCH(___copy_to_user, U3copy_to_user)
+	ULTRA3_DO_PATCH(raw_copy_from_user, U3copy_from_user)
+	ULTRA3_DO_PATCH(raw_copy_to_user, U3copy_to_user)
 	retl
 	 nop
 	.size	cheetah_patch_copyops,.-cheetah_patch_copyops
diff --git a/arch/sparc/lib/copy_in_user.S b/arch/sparc/lib/copy_in_user.S
index 0252b218de45..1b73bb80aeb0 100644
--- a/arch/sparc/lib/copy_in_user.S
+++ b/arch/sparc/lib/copy_in_user.S
@@ -44,7 +44,7 @@ __retl_o2_plus_1:
 	 * to copy register windows around during thread cloning.
 	 */
 
-ENTRY(___copy_in_user)	/* %o0=dst, %o1=src, %o2=len */
+ENTRY(raw_copy_in_user)	/* %o0=dst, %o1=src, %o2=len */
 	cmp		%o2, 0
 	be,pn		%XCC, 85f
 	 or		%o0, %o1, %o3
@@ -105,5 +105,5 @@ ENTRY(___copy_in_user)	/* %o0=dst, %o1=src, %o2=len */
 	 add		%o0, 1, %o0
 	retl
 	 clr		%o0
-ENDPROC(___copy_in_user)
-EXPORT_SYMBOL(___copy_in_user)
+ENDPROC(raw_copy_in_user)
+EXPORT_SYMBOL(raw_copy_in_user)
diff --git a/arch/sparc/lib/copy_user.S b/arch/sparc/lib/copy_user.S
index cea644dc67a6..bc243ee807cc 100644
--- a/arch/sparc/lib/copy_user.S
+++ b/arch/sparc/lib/copy_user.S
@@ -364,21 +364,7 @@ short_aligned_end:
 97:
 	mov	%o2, %g3
 fixupretl:
-	sethi   %hi(PAGE_OFFSET), %g1
-	cmp	%o0, %g1
-	blu	1f
-	 cmp	%o1, %g1
-	bgeu	1f
-	 ld	[%g6 + TI_PREEMPT], %g1
-	cmp	%g1, 0
-	bne	1f
-	 nop
-	save	%sp, -64, %sp
-	mov	%i0, %o0
-	call	__bzero
-	 mov	%g3, %o1
-	restore
-1:	retl
+	retl
 	 mov	%g3, %o0
 
 /* exception routine sets %g2 to (broken_insn - first_insn)>>2 */