linux-kernel - Re: [PATCH v2 1/2] drm/virtio: introduce the HOST_PAGE

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Message-ID: <9af42e2f-7c5c-4b71-822d-eb39946448df@collabora.com>
Date: Thu, 3 Apr 2025 19:49:41 +0300
From: Dmitry Osipenko <dmitry.osipenko@...labora.com>
To: Sergio Lopez <slp@...hat.com>, David Airlie <airlied@...hat.com>,
 Gerd Hoffmann <kraxel@...hat.com>,
 Gurchetan Singh <gurchetansingh@...omium.org>, Chia-I Wu
 <olvaffe@...il.com>, Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>,
 Simona Vetter <simona@...ll.ch>, "Michael S. Tsirkin" <mst@...hat.com>,
 Jason Wang <jasowang@...hat.com>, Xuan Zhuo <xuanzhuo@...ux.alibaba.com>,
 Eugenio Pérez <eperezma@...hat.com>,
 Rob Clark <robdclark@...il.com>
Cc: dri-devel@...ts.freedesktop.org, virtualization@...ts.linux.dev,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/2] drm/virtio: introduce the HOST_PAGE_SIZE feature

On 4/2/25 20:55, Dmitry Osipenko wrote:
> On 4/2/25 20:46, Sergio Lopez wrote:
>> diff --git a/include/uapi/linux/virtio_gpu.h b/include/uapi/linux/virtio_gpu.h
>> index bf2c9cabd20793e3851e749baadf210341445501..adc264df4e458e9c754936c3015c069e5ee6b899 100644
>> --- a/include/uapi/linux/virtio_gpu.h
>> +++ b/include/uapi/linux/virtio_gpu.h
>> @@ -64,6 +64,10 @@
>>   * context_init and multiple timelines
>>   */
>>  #define VIRTIO_GPU_F_CONTEXT_INIT        4
>> +/*
>> + * Config struct contains host page size
>> + */
>> +#define VIRTIO_GPU_F_HOST_PAGE_SIZE      5
>>  
>>  enum virtio_gpu_ctrl_type {
>>  	VIRTIO_GPU_UNDEFINED = 0,
>> @@ -364,6 +368,7 @@ struct virtio_gpu_config {
>>  	__le32 events_clear;
>>  	__le32 num_scanouts;
>>  	__le32 num_capsets;
>> +	__le32 host_page_size;
>>  };
> 
> Hi, this is still a spec change and the virtio-gpu spec update is need.
> Please send the spec patch, I'd want to see that it won't have new
> objections before merging the kernel patches.

Noticed the virtio-spec patch now. My bad for missing it a day ago,
thanks for sending it!

-- 
Best regards,
Dmitry