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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 v8 1/3] tty: hvc: use correct dma alignment size
Date: Wed, 18 Aug 2021 16:21:20 +0800	[thread overview]
Message-ID: <20210818082122.166881-2-xianting.tian@linux.alibaba.com> (raw)
In-Reply-To: <20210818082122.166881-1-xianting.tian@linux.alibaba.com>

Use L1_CACHE_BYTES as the dma alignment size, use 'sizeof(long)'
is wrong.

Signed-off-by: Xianting Tian <xianting.tian@linux.alibaba.com>
Reviewed-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


  reply	other threads:[~2021-08-18  8:21 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-18  8:21 [PATCH v8 0/3] make hvc pass dma capable memory to its backend Xianting Tian
2021-08-18  8:21 ` Xianting Tian [this message]
2021-08-18  8:21 ` [PATCH v8 2/3] tty: hvc: pass DMA capable memory to put_chars() Xianting Tian
2021-08-18 11:03   ` kernel test robot
2021-08-18 17:41   ` kernel test robot
2021-08-20  6:49   ` Daniel Axtens
2021-08-20  8:43     ` Xianting TIan
2021-09-18 12:32       ` Xianting Tian
2021-09-18 12:40         ` Greg KH
2021-09-18 12:47           ` Xianting Tian
2021-08-20 12:34     ` Michael Ellerman
2021-08-18  8:21 ` [PATCH v8 3/3] virtio-console: remove unnecessary kmemdup() Xianting Tian

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