Re: [PATCH v6 04/21] arm64: Kill 32-bit applications scheduled on 64-bit-only CPUs
From: Catalin Marinas <catalin.marinas@arm.com>
Date: 2021-05-21 10:55:45
Also in:
linux-arm-kernel, lkml
On Tue, May 18, 2021 at 10:47:08AM +0100, Will Deacon wrote:
Scheduling a 32-bit application on a 64-bit-only CPU is a bad idea. Ensure that 32-bit applications always take the slow-path when returning to userspace on a system with mismatched support at EL0, so that we can avoid trying to run on a 64-bit-only CPU and force a SIGKILL instead. Signed-off-by: Will Deacon <will@kernel.org>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>