在 2021/8/5 下午4:09, Jiri Slaby 写道:
On 05. 08. 21, 9:58, Jiri Slaby wrote:
Hi,
On 04. 08. 21, 4:54, Xianting Tian wrote:
@@ -933,6 +949,16 @@ struct hvc_struct *hvc_alloc(uint32_t vtermno,
int data,
hp->outbuf_size = outbuf_size;
hp->outbuf = &((char *)hp)[ALIGN(sizeof(*hp), sizeo
在 2021/8/5 下午4:18, Greg KH 写道:
On Thu, Aug 05, 2021 at 04:08:46PM +0800, Xianting Tian wrote:
在 2021/8/5 下午3:58, Jiri Slaby 写道:
Hi,
On 04. 08. 21, 4:54, Xianting Tian wrote:
@@ -933,6 +949,16 @@ struct hvc_struct *hvc_alloc(uint32_t vtermno,
int data,
hp->outbuf_size = outbuf_size;
在 2021/8/5 下午3:58, Jiri Slaby 写道:
Hi,
On 04. 08. 21, 4:54, Xianting Tian wrote:
@@ -933,6 +949,16 @@ struct hvc_struct *hvc_alloc(uint32_t vtermno,
int data,
hp->outbuf_size = outbuf_size;
hp->outbuf = &((char *)hp)[ALIGN(sizeof(*hp), sizeof(long))];
+ /*
+ * hvc_con_outb
On Thu, Aug 05, 2021 at 04:08:46PM +0800, Xianting Tian wrote:
>
> 在 2021/8/5 下午3:58, Jiri Slaby 写道:
> > Hi,
> >
> > On 04. 08. 21, 4:54, Xianting Tian wrote:
> > > @@ -933,6 +949,16 @@ struct hvc_struct *hvc_alloc(uint32_t vtermno,
> > > int data,
> > > hp->outbuf_size = outbuf_size;
> > >
On 05. 08. 21, 9:58, Jiri Slaby wrote:
Hi,
On 04. 08. 21, 4:54, Xianting Tian wrote:
@@ -933,6 +949,16 @@ struct hvc_struct *hvc_alloc(uint32_t vtermno,
int data,
hp->outbuf_size = outbuf_size;
hp->outbuf = &((char *)hp)[ALIGN(sizeof(*hp), sizeof(long))];
This deserves cleanup to
Hi,
On 04. 08. 21, 4:54, Xianting Tian wrote:
@@ -933,6 +949,16 @@ struct hvc_struct *hvc_alloc(uint32_t vtermno, int data,
hp->outbuf_size = outbuf_size;
hp->outbuf = &((char *)hp)[ALIGN(sizeof(*hp), sizeof(long))];
+ /*
+* hvc_con_outbuf is guaranteed to be aligned
As well known, hvc backend can register its opertions to hvc backend.
the opertions contain put_chars(), get_chars() and so on.
Some hvc backend may do dma in its opertions. eg, put_chars() of
virtio-console. But in the code of hvc framework, it may pass DMA
incapable memory to put_chars() under a
