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Message-ID: <608ad1ed-fbcc-99c3-c3aa-ade6ca1de0c1@loongson.cn>
Date:   Wed, 21 Jun 2023 22:49:01 +0800
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Subject: Re: [PATCH v10 07/11] drm/etnaviv: Add support for the dma coherent
 device
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To:     Lucas Stach <l.stach@pengutronix.de>,
        Sui Jingfeng <18949883232@163.com>,
        Russell King <linux+etnaviv@armlinux.org.uk>,
        Christian Gmeiner <christian.gmeiner@gmail.com>,
        David Airlie <airlied@gmail.com>,
        Daniel Vetter <daniel@ffwll.ch>
Cc:     linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
        etnaviv@lists.freedesktop.org,
        Philipp Zabel <p.zabel@pengutronix.de>,
        Bjorn Helgaas <bhelgaas@google.com>
References: <20230620094716.2231414-1-18949883232@163.com>
 <20230620094716.2231414-8-18949883232@163.com>
 <8f74f0962c8bab6c832919a5340667c54e1a7ddc.camel@pengutronix.de>
From:   Sui Jingfeng <suijingfeng@loongson.cn>
Organization: Loongson
In-Reply-To: <8f74f0962c8bab6c832919a5340667c54e1a7ddc.camel@pengutronix.de>
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Hi

On 2023/6/21 18:00, Lucas Stach wrote:
>> +	case ETNA_BO_CACHED:
>> +		prot = PAGE_KERNEL;
>> +		break;
>> +	case ETNA_BO_UNCACHED:
>> +		prot = pgprot_noncached(PAGE_KERNEL);
>> +		break;
>> +	case ETNA_BO_WC:
>> +	default:
>> +		prot = pgprot_writecombine(PAGE_KERNEL);
>> +	}
>> +
>> +	return vmap(pages, obj->base.size >> PAGE_SHIFT, VM_MAP, prot);
> While that change makes sense it should also be in a separate patch, as
> it's a valid change on its own, even if for non-coherent devices.
>
Accept with pleasure.

I will prepare the patch carefully.

Thanks for the positive comments.


-- 
Jingfeng