[Differential] [Closed] D3106: Fix possible coherency issues between PEs related to I-cache

[zbb (Zbigniew Bodek)]

This revision was automatically updated to reflect the committed changes.
Closed by commit rS285655: Fix possible coherency issues between PEs related to I-cache (authored by zbb).

CHANGED PRIOR TO COMMIT
  https://reviews.freebsd.org/D3106?vs=6995&id=7048#toc

REPOSITORY
  rS FreeBSD src repository

CHANGES SINCE LAST UPDATE
  https://reviews.freebsd.org/D3106?vs=6995&id=7048

REVISION DETAIL
  https://reviews.freebsd.org/D3106

AFFECTED FILES
  head/sys/arm64/arm64/cpufunc_asm.S

CHANGE DETAILS
  diff --git a/head/sys/arm64/arm64/cpufunc_asm.S b/head/sys/arm64/arm64/cpufunc_asm.S
  --- a/head/sys/arm64/arm64/cpufunc_asm.S
  +++ b/head/sys/arm64/arm64/cpufunc_asm.S
  @@ -61,17 +61,18 @@
   	add	x1, x1, x2		/* Add these to the size */
   	bic	x0, x0, x4		/* Clear the low bit of the address */
   1:
  +	dc	\dcop, x0
  +	dsb	ish
   .if \ic != 0
   	ic	\icop, x0
  +	dsb	ish
   .endif
  -	dc	\dcop, x0
   	add	x0, x0, x3		/* Move to the next line */
   	subs	x1, x1, x3		/* Reduce the size */
   	b.hi	1b			/* Check if we are done */
   .if \ic != 0
   	isb
   .endif
  -	dsb	ish
   	ret
   .endm

EMAIL PREFERENCES
  https://reviews.freebsd.org/settings/panel/emailpreferences/

To: wma_semihalf.com, emaste, zbb, andrew
Cc: imp, andrew, freebsd-arm-list, emaste
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