arm64: enable tlbi range instructions

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TLBI RANGE feature instoduces new assembly instructions and only
support by binutils >= 2.30.  Add necessary Kconfig logic to allow
this to be enabled and pass '-march=armv8.4-a' to KBUILD_CFLAGS.

Signed-off-by: Zhenyu Ye <yezhenyu2@huawei.com>
Link: https://lore.kernel.org/r/20200715071945.897-3-yezhenyu2@huawei.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

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Zhenyu Ye 2020-07-15 15:19:44 +08:00 • committed by Catalin Marinas

parent b620ba5454

commit 7c78f67e9b

2 changed files with 21 additions and 0 deletions

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14

arch/arm64/Kconfig

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7

arch/arm64/Makefile

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