Re: [PATCH] arm64: fix bug for reloading FPSIMD state after CPU hotplug.

2015-06-11 Thread Catalin Marinas
On Thu, Jun 11, 2015 at 12:02:45PM +0800, Chunyan Zhang wrote: > From: Janet Liu > > Now FPSIMD don't handle HOTPLUG_CPU. This introduces bug after cpu down/up > process. > > After cpu down/up process, the FPSMID hardware register is default value, not > any > process's fpsimd context. when CP

[PATCH] arm64: fix bug for reloading FPSIMD state after CPU hotplug.

2015-06-10 Thread Chunyan Zhang
From: Janet Liu Now FPSIMD don't handle HOTPLUG_CPU. This introduces bug after cpu down/up process. After cpu down/up process, the FPSMID hardware register is default value, not any process's fpsimd context. when CPU_DEAD set cpu's fpsimd_state to NULL, it will force to load the fpsimd contex