Re: [PATCH v10 2/5] arm64: mte: change ASYNC and SYNC TCF settings into bitfields
From: Will Deacon <will@kernel.org>
Date: 2021-07-14 11:03:50
On Tue, Jul 13, 2021 at 04:47:58PM -0700, Peter Collingbourne wrote:
Allow the user program to specify both ASYNC and SYNC TCF modes by repurposing the existing constants as bitfields. This will allow the kernel to select one of the modes on behalf of the user program. With this patch the kernel will always select async mode, but a subsequent patch will make this configurable. Link: https://linux-review.googlesource.com/id/Icc5923c85a8ea284588cc399ae74fd19ec291230 Signed-off-by: Peter Collingbourne <redacted> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> --- v9: - make mte_update_sctlr_user static arch/arm64/include/asm/processor.h | 3 ++ arch/arm64/kernel/mte.c | 70 ++++++++++++------------------ include/uapi/linux/prctl.h | 11 ++--- 3 files changed, 37 insertions(+), 47 deletions(-)
Acked-by: Will Deacon <will@kernel.org> Will _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel