On Wed, 2014-01-22 at 20:49 -0600, Wang Dongsheng-B40534 wrote:
> > > >
> > > > The whole point of calling enable_kernel_fp() in C code before
> > > > suspending is to ensure that the FP state gets saved. If FP is used
> > > > after that point it is a bug. If you're worried about such bugs, then
> > >
> > > The whole point of calling enable_kernel_fp() in C code before
> > > suspending is to ensure that the FP state gets saved. If FP is used
> > > after that point it is a bug. If you're worried about such bugs, then
> > > clear MSR[FP] after calling enable_kernel_fp(), rather than adding
@enomsg.org;
> > linuxppc-
> > d...@lists.ozlabs.org
> > Subject: Re: [PATCH 2/3] powerpc/85xx: Provide two functions to
> > save/restore the
> > core registers
> >
> > On Mon, 2014-01-20 at 00:03 -0600, Wang Dongsheng-B40534 wrote:
> > &g
> -Original Message-
> From: Wood Scott-B07421
> Sent: Tuesday, January 21, 2014 9:06 AM
> To: Wang Dongsheng-B40534
> Cc: b...@kernel.crashing.org; Zhao Chenhui-B35336; an...@enomsg.org; linuxppc-
> d...@lists.ozlabs.org
> Subject: Re: [PATCH 2/3] powerpc/85xx: Pro
On Mon, 2014-01-20 at 00:03 -0600, Wang Dongsheng-B40534 wrote:
> > > > > + /*
> > > > > + * Need to save float-point registers if MSR[FP] = 1.
> > > > > + */
> > > > > + mfmsr r12
> > > > > + andi. r12, r12, MSR_FP
> > > > > + beq 1f
> > > > > + do_sr_fpr_regs
> > > What is there that is specfic to a particular core type that can't be
> handled
> > > from C code?
> > >
> >
> > In the context of the calling, maybe not in C environment.(Deep sleep
> > without
> > C environment when calling those interfaces)
>
> Could you provide a concrete example?
>
:
@enomsg.org;
> > linuxppc-
> > d...@lists.ozlabs.org
> > Subject: Re: [PATCH 2/3] powerpc/85xx: Provide two functions to
> > save/restore the
> > core registers
> >
> > On Tue, 2014-01-14 at 15:59 +0800, Dongsheng Wang wrote:
> > > From: Wang Don
> -Original Message-
> From: Wood Scott-B07421
> Sent: Wednesday, January 15, 2014 7:51 AM
> To: Wang Dongsheng-B40534
> Cc: b...@kernel.crashing.org; Zhao Chenhui-B35336; an...@enomsg.org; linuxppc-
> d...@lists.ozlabs.org
> Subject: Re: [PATCH 2/3] powerpc/85xx:
On Tue, 2014-01-14 at 15:59 +0800, Dongsheng Wang wrote:
> From: Wang Dongsheng
>
> Add fsl_cpu_state_save/fsl_cpu_state_restore functions, used for deep
> sleep and hibernation to save/restore core registers. We abstract out
> save/restore code for use in various modules, to make them don't need
From: Wang Dongsheng
Add fsl_cpu_state_save/fsl_cpu_state_restore functions, used for deep
sleep and hibernation to save/restore core registers. We abstract out
save/restore code for use in various modules, to make them don't need
to maintain.
Currently supported processors type are E6500, E5500
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