On 1/10/20 6:54 AM, Eugeniy Paltsev wrote:
>
>>> + CHK_OPT_STRICT(CONFIG_ARC_DSP_KERNEL, present);
>>> }
> My idea here is to encapsulate implementation of everything dsp-related in the
> file with dsp code. So I'm even thinking about moving the config check itself
> to some
Hi Vineet,
>From: Vineet Gupta
>Sent: Tuesday, January 7, 2020 04:03
>To: Eugeniy Paltsev; linux-snps-arc@lists.infradead.org
>Cc: linux-ker...@vger.kernel.org; Alexey Brodkin
>Subject: Re: [PATCH 3/5] ARC: handle DSP presence in HW
>[snip]
>> +static in
On 1/6/20 5:03 PM, Vineet Gupta wrote:
>
>> +.macro DSP_SAVE_REGFILE_IRQ
>> +#if defined(CONFIG_ARC_DSP_KERNEL)
>> +/* Drop any changes to DSP_CTRL made by userspace so userspace won't be
>> + * able to break kernel */
>> +mov r58, DSP_CTRL_DISABLED_ALL
>> +sr r58,
On 12/27/19 10:03 AM, Eugeniy Paltsev wrote:
> In case of DSP extension presence in HW some instructions
> (related to integer multiply, multiply-accumulate, and divide
> operation) executes on this DSP execution unit. So their
> execution will depend on dsp configuration register (DSP_CTRL)
>
>
In case of DSP extension presence in HW some instructions
(related to integer multiply, multiply-accumulate, and divide
operation) executes on this DSP execution unit. So their
execution will depend on dsp configuration register (DSP_CTRL)
As we want these instructions to execute the same way
