• Will Deacon's avatar
    arm64: errata: Add workaround for Cortex-A76 erratum #1463225 · 969f5ea6
    Will Deacon authored
    Revisions of the Cortex-A76 CPU prior to r4p0 are affected by an erratum
    that can prevent interrupts from being taken when single-stepping.
    
    This patch implements a software workaround to prevent userspace from
    effectively being able to disable interrupts.
    
    Cc: <stable@vger.kernel.org>
    Cc: Marc Zyngier <marc.zyngier@arm.com>
    Cc: Catalin Marinas <catalin.marinas@arm.com>
    Signed-off-by: default avatarWill Deacon <will.deacon@arm.com>
    969f5ea6
syscall.c 4.07 KB