From: Xianting Tian <xianting.tian@linux.alibaba.com>
To: gregkh@linuxfoundation.org, jirislaby@kernel.org,
amit@kernel.org, arnd@arndb.de, osandov@fb.com
Cc: shile.zhang@linux.alibaba.com, linuxppc-dev@lists.ozlabs.org,
virtualization@lists.linux-foundation.org,
linux-kernel@vger.kernel.org,
Xianting Tian <xianting.tian@linux.alibaba.com>
Subject: [PATCH v11 1/3] tty: hvc: use correct dma alignment size
Date: Fri, 15 Oct 2021 10:46:56 +0800 [thread overview]
Message-ID: <20211015024658.1353987-2-xianting.tian@linux.alibaba.com> (raw)
In-Reply-To: <20211015024658.1353987-1-xianting.tian@linux.alibaba.com>
Use L1_CACHE_BYTES as the dma alignment size, use 'sizeof(long)' as
dma alignment is wrong.
Signed-off-by: Xianting Tian <xianting.tian@linux.alibaba.com>
Signed-off-by: Shile Zhang <shile.zhang@linux.alibaba.com>
---
drivers/tty/hvc/hvc_console.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/tty/hvc/hvc_console.c b/drivers/tty/hvc/hvc_console.c
index 5bb8c4e44..5957ab728 100644
--- a/drivers/tty/hvc/hvc_console.c
+++ b/drivers/tty/hvc/hvc_console.c
@@ -49,7 +49,7 @@
#define N_OUTBUF 16
#define N_INBUF 16
-#define __ALIGNED__ __attribute__((__aligned__(sizeof(long))))
+#define __ALIGNED__ __attribute__((__aligned__(L1_CACHE_BYTES)))
static struct tty_driver *hvc_driver;
static struct task_struct *hvc_task;
--
2.17.1
next prev parent reply other threads:[~2021-10-15 2:47 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-15 2:46 [PATCH v11 0/3] make hvc pass dma capable memory to its backend Xianting Tian
2021-10-15 2:46 ` Xianting Tian [this message]
2021-10-15 2:46 ` [PATCH v11 2/3] tty: hvc: pass DMA capable memory to put_chars() Xianting Tian
2021-10-15 12:59 ` Xianting Tian
2021-10-20 8:47 ` Xianting Tian
2021-10-20 8:56 ` Greg KH
2021-10-26 5:10 ` Jiri Slaby
2021-10-26 6:02 ` Xianting Tian
2021-10-26 6:10 ` Greg KH
2021-10-26 6:11 ` Xianting Tian
2021-10-26 6:49 ` Greg KH
2021-10-15 2:46 ` [PATCH v11 3/3] virtio-console: remove unnecessary kmemdup() Xianting Tian
2021-10-21 8:35 ` [PATCH v11 0/3] make hvc pass dma capable memory to its backend Greg KH
2021-10-21 8:56 ` Xianting Tian
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