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H A Dthread_a64.S2852c5c9628081860cfd94ea32c927f0252ed966 Mon Jul 01 22:10:27 UTC 2019 Jens Wiklander <jens.wiklander@linaro.org> core: fix icache_inv_user_range in AArch64

Prior to this patch in the AArch64 version of icache_inv_user_range()
ttbr0_el1 was overwritten with garbage if CFG_CORE_UNMAP_CORE_AT_EL0=n.
This patch fixes this by instead modifying previously read value.

Fixes: 79083642a114 ("core: add icache_inv_user_range()")
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Acked-by: Jerome Forissier <jerome.forissier@linaro.org>
Reviewed-by: Rouven Czerwinski <r.czerwinski@pengutronix.de>