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(parent: dad947c) | patch
arm64/gcs: Provide put_user_gcs()
authorMark Brown <broonie@kernel.org>
Tue, 1 Oct 2024 22:58:49 +0000 (23:58 +0100)
committerCatalin Marinas <catalin.marinas@arm.com>
Fri, 4 Oct 2024 11:04:34 +0000 (12:04 +0100)
commitd0aa2b4351862cc2ce8d97e00c96bffc02ea16af
tree2d0e6b77b585766bc51820eb67a7eb52b37cbaa6tree | snapshot
parentdad947cc22cff28348d04e21fa4d6c882385fd7dcommit | diff
arm64/gcs: Provide put_user_gcs()

In order for EL1 to write to an EL0 GCS it must use the GCSSTTR instruction
rather than a normal STTR. Provide a put_user_gcs() which does this.

Reviewed-by: Thiago Jung Bauermann <thiago.bauermann@linaro.org>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20241001-arm64-gcs-v13-10-222b78d87eee@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
arch/arm64/include/asm/uaccess.h diff | blob | blame | history
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