Re: [PATCH 1/2] powerpc/85xx: add hardware automatically enter altivec idle state
From: Scott Wood <hidden>
Date: 2013-08-23 15:31:34
On Thu, 2013-08-22 at 21:52 -0500, Wang Dongsheng-B40534 wrote:
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-----Original Message----- From: Wood Scott-B07421 Sent: Thursday, August 22, 2013 11:19 PM To: Wang Dongsheng-B40534 Cc: Wood Scott-B07421; Kumar Gala; Zhao Chenhui-B35336; linuxppc- dev@lists.ozlabs.org Subject: Re: [PATCH 1/2] powerpc/85xx: add hardware automatically enter altivec idle state On Wed, 2013-08-21 at 22:13 -0500, Wang Dongsheng-B40534 wrote:quoted
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-----Original Message----- From: Wood Scott-B07421 Sent: Tuesday, August 20, 2013 8:39 AM To: Wang Dongsheng-B40534 Cc: Wood Scott-B07421; Kumar Gala; linuxppc-dev@lists.ozlabs.org Subject: Re: [PATCH 1/2] powerpc/85xx: add hardware automatically enter altivec idle state It just seems wrong to have an ad-hoc mechanism for running core-specific code when we have cputable... If we really need this, maybe we should add a "cpu_setup_late" function pointer. With your patch, when does the power management register get set when hot plugging a cpu?Um.. I don't deal with this situation. I will fix it. __setup/restore_cpu_e6500 looks good. But only bootcpu call__setup_cpu_e6500, not on each cpu.quoted
I think this is a bug.Other CPUs call __restore_cpu_e6500.No, there is bootcore of secondary thread, and other cores of first thread call __restore_cpu_e6500.
This is the upstream list -- there is no e6500 thread support yet. :-) But in the SDK I do see generic_secondary_common_init being called from generic_secondary_thread_init, which means __restore_cpu_e6500 will be called. -Scott