diff mbox

[v3,11/20] tty/hvc: xen: Use xen page definition

Message ID 1438966019-19322-12-git-send-email-julien.grall@citrix.com (mailing list archive)
State New, archived
Headers show

Commit Message

Julien Grall Aug. 7, 2015, 4:46 p.m. UTC 
The console ring is always based on the page granularity of Xen.

Signed-off-by: Julien Grall <julien.grall@citrix.com>
Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>

---
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: David Vrabel <david.vrabel@citrix.com>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: linuxppc-dev@lists.ozlabs.org

    Changes in v3:
        - Some changes has been moved in the series "Use correctly the
        Xen memory terminologies in Linux".
        - Add Stefano's reviewed-by
---
 drivers/tty/hvc/hvc_xen.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

David Vrabel Aug. 20, 2015, 9:55 a.m. UTC | #1 
On 07/08/15 17:46, Julien Grall wrote:
> The console ring is always based on the page granularity of Xen.
[...]
> --- a/drivers/tty/hvc/hvc_xen.c
> +++ b/drivers/tty/hvc/hvc_xen.c
> @@ -230,7 +230,7 @@ static int xen_hvm_console_init(void)
>  	if (r < 0 || v == 0)
>  		goto err;
>  	gfn = v;
> -	info->intf = xen_remap(gfn << PAGE_SHIFT, PAGE_SIZE);
> +	info->intf = xen_remap(gfn << XEN_PAGE_SHIFT, PAGE_SIZE);

You need XEN_PAGE_SIZE here I think...

>  	if (info->intf == NULL)
>  		goto err;
>  	info->vtermno = HVC_COOKIE;
> @@ -472,7 +472,7 @@ static int xencons_resume(struct xenbus_device *dev)
>  	struct xencons_info *info = dev_get_drvdata(&dev->dev);
>  
>  	xencons_disconnect_backend(info);
> -	memset(info->intf, 0, PAGE_SIZE);
> +	memset(info->intf, 0, XEN_PAGE_SIZE);

...particularly since you use it here.

David
Julien Grall Aug. 28, 2015, 3:03 p.m. UTC | #2 
Hi David,

On 20/08/15 10:55, David Vrabel wrote:
> On 07/08/15 17:46, Julien Grall wrote:
>> The console ring is always based on the page granularity of Xen.
> [...]
>> --- a/drivers/tty/hvc/hvc_xen.c
>> +++ b/drivers/tty/hvc/hvc_xen.c
>> @@ -230,7 +230,7 @@ static int xen_hvm_console_init(void)
>>  	if (r < 0 || v == 0)
>>  		goto err;
>>  	gfn = v;
>> -	info->intf = xen_remap(gfn << PAGE_SHIFT, PAGE_SIZE);
>> +	info->intf = xen_remap(gfn << XEN_PAGE_SHIFT, PAGE_SIZE);
> 
> You need XEN_PAGE_SIZE here I think...

Right, I did the mistake while rebase on my s/mfn/gfn/ series. I will
fix it in the next version.

Regards,
diff mbox

Patch

diff --git a/drivers/tty/hvc/hvc_xen.c b/drivers/tty/hvc/hvc_xen.c
index 10beb15..0599d9d 100644
--- a/drivers/tty/hvc/hvc_xen.c
+++ b/drivers/tty/hvc/hvc_xen.c
@@ -230,7 +230,7 @@  static int xen_hvm_console_init(void)
 	if (r < 0 || v == 0)
 		goto err;
 	gfn = v;
-	info->intf = xen_remap(gfn << PAGE_SHIFT, PAGE_SIZE);
+	info->intf = xen_remap(gfn << XEN_PAGE_SHIFT, PAGE_SIZE);
 	if (info->intf == NULL)
 		goto err;
 	info->vtermno = HVC_COOKIE;
@@ -472,7 +472,7 @@  static int xencons_resume(struct xenbus_device *dev)
 	struct xencons_info *info = dev_get_drvdata(&dev->dev);
 
 	xencons_disconnect_backend(info);
-	memset(info->intf, 0, PAGE_SIZE);
+	memset(info->intf, 0, XEN_PAGE_SIZE);
 	return xencons_connect_backend(dev, info);
 }