[PATCH v2 3/6] x86/uaccess: Rearrange putuser.S

[Josh Poimboeuf]

On Fri, Oct 18, 2024 at 11:51:06AM +0300, Kirill A . Shutemov wrote:
> On Thu, Oct 17, 2024 at 02:55:22PM -0700, Josh Poimboeuf wrote:
> >  SYM_FUNC_START(__put_user_2)
> >  	check_range size=2
> >  	ASM_STAC
> > -3:	movw %ax,(%_ASM_CX)
> > +2:	movw %ax,(%_ASM_CX)
> >  	xor %ecx,%ecx
> >  	ASM_CLAC
> >  	RET
> >  SYM_FUNC_END(__put_user_2)
> >  EXPORT_SYMBOL(__put_user_2)
> 
> This patch provides an opportunity to give these labels more meaningful
> names, so that future rearrangements do not require as much boilerplate.

Yeah, I can add a patch like Linus' patch to getuser.S which
encapsulates it all in a macro:

.macro UACCESS op src dst
1:	\op \src,\dst
	_ASM_EXTABLE_UA(1b, __get_user_handle_exception)
.endm

	.text
SYM_FUNC_START(__get_user_1)
	check_range size=1
	ASM_STAC
	UACCESS movzbl (%_ASM_AX),%edx
	xor %eax,%eax
	ASM_CLAC
	RET
SYM_FUNC_END(__get_user_1)
EXPORT_SYMBOL(__get_user_1)

-- 
Josh