tree 4d0b573a5ad008f478f806e585aec22db77e03cc
parent 0b317c389c6771cbe1c5a12fe9322285a808a9bd
author Paul Burton <paul.burton@mips.com> 1549071807 +0000
committer Paul Burton <paul.burton@mips.com> 1549306595 -0800
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MIPS: Add GINVT instruction helpers

Add a family of ginvt_* functions making it easy to emit a GINVT
instruction to globally invalidate TLB entries. We make use of the
_ASM_MACRO infrastructure to support emitting the instructions even if
the assembler isn't new enough to support them natively.

An associated STYPE_GINV definition & sync_ginv() function are added to
emit a sync instruction of type 0x14, which operates as a completion
barrier for these new GINVT (and GINVI) instructions.

Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: linux-mips@vger.kernel.org