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SubjectRe: [PATCH v6 5/5] Auto-detect whether a FPU exists
On Thu, Aug 09, 2018 at 03:44:40PM +0800, Alan Kao wrote:
> We expect that a kernel with CONFIG_FPU=y can still support no-FPU
> machines. To do so, the kernel should first examine the existence of a
> FPU, then do nothing if a FPU does exist; otherwise, it should
> disable/bypass all FPU-related functions.
> In this patch, a new global variable, has_fpu, is created and determined
> when parsing the hardware capability from device tree during booting.
> This variable is used in those FPU-related functions.
> Signed-off-by: Alan Kao <>
> Cc: Greentime Hu <>
> Cc: Vincent Chen <>
> Cc: Zong Li <>
> Cc: Nick Hu <>

Looks good,

Reviewed-by: Christoph Hellwig <>

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