[PATCH v4 5/5] arm64: Fix behavior of maxcpus=N

Catalin Marinas catalin.marinas at arm.com
Fri Apr 22 06:50:15 PDT 2016

On Fri, Apr 22, 2016 at 12:25:35PM +0100, Suzuki K. Poulose wrote:
> maxcpu=n sets the number of CPUs activated at boot time to a max of n,
> but allowing the remaining CPUs to be brought up later if the user
> decides to do so. However, on arm64 due to various reasons, we disallowed
> hotplugging CPUs beyond n, by marking them not present. Now that
> we have checks in place to make sure the hotplugged CPUs have compatible
> features with system and requires no new errata, relax the restriction.
> Cc: Will Deacon <will.deacon at arm.com>
> Cc: Catalin Marinas <catalin.marinas at arm.com>
> Cc: Mark Rutland <mark.rutland at arm.com>
> Cc: James Morse <james.morse at arm.com>
> Signed-off-by: Suzuki K Poulose <suzuki.poulose at arm.com>

Reviewed-by: Catalin Marinas <catalin.marinas at arm.com>

More information about the linux-arm-kernel mailing list