linux-kernel - Re: [PATCH v4 5/5] Input: hv: Remove dependencies on PAGE

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Date:   Sun, 14 Jul 2019 16:28:54 -0700
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     Maya Nakamura <m.maya.nakamura@...il.com>
Cc:     mikelley@...rosoft.com, kys@...rosoft.com, haiyangz@...rosoft.com,
        sthemmin@...rosoft.com, sashal@...nel.org, x86@...nel.org,
        linux-hyperv@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 5/5] Input: hv: Remove dependencies on PAGE_SIZE for
 ring buffer

On Fri, Jul 12, 2019 at 08:30:27AM +0000, Maya Nakamura wrote:
> Define the ring buffer size as a constant expression because it should
> not depend on the guest page size.
> 
> Signed-off-by: Maya Nakamura <m.maya.nakamura@...il.com>
> Reviewed-by: Michael Kelley <mikelley@...rosoft.com>

Applied, thank you.

> ---
>  drivers/input/serio/hyperv-keyboard.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/input/serio/hyperv-keyboard.c b/drivers/input/serio/hyperv-keyboard.c
> index 8e457e50f837..88ae7c2ac3c8 100644
> --- a/drivers/input/serio/hyperv-keyboard.c
> +++ b/drivers/input/serio/hyperv-keyboard.c
> @@ -75,8 +75,8 @@ struct synth_kbd_keystroke {
>  
>  #define HK_MAXIMUM_MESSAGE_SIZE 256
>  
> -#define KBD_VSC_SEND_RING_BUFFER_SIZE		(10 * PAGE_SIZE)
> -#define KBD_VSC_RECV_RING_BUFFER_SIZE		(10 * PAGE_SIZE)
> +#define KBD_VSC_SEND_RING_BUFFER_SIZE		(40 * 1024)
> +#define KBD_VSC_RECV_RING_BUFFER_SIZE		(40 * 1024)
>  
>  #define XTKBD_EMUL0     0xe0
>  #define XTKBD_EMUL1     0xe1
> -- 
> 2.17.1
> 

-- 
Dmitry