> -Original Message-
> From: Boris Ostrovsky [mailto:boris.ostrov...@oracle.com]
> Sent: 13 February 2017 14:09
> To: Paul Durrant ; xen-de...@lists.xenproject.org;
> linux-ker...@vger.kernel.org
> Cc: Juergen Gross
> Subject: Re: [PATCH v2 2/3] xen/privcmd: Add IOCTL_PRIVCMD_DM_OP
>
>
>
How about something like (with rather arbitrary values)
#define PRIVCMD_DMOP_MAX_NUM_BUFFERS 16
#define PRIVCMD_DMOP_MAX_TOT_BUFFER_SZ 4096
and make them part of the interface (i.e. put them into privcmd.h)?
Given that the values are arbitrary, I think it may be better to make them
> -Original Message-
> From: Boris Ostrovsky [mailto:boris.ostrov...@oracle.com]
> Sent: 10 February 2017 17:45
> To: Paul Durrant ; xen-de...@lists.xenproject.org;
> linux-ker...@vger.kernel.org
> Cc: Juergen Gross
> Subject: Re: [PATCH v2 2/3] xen/privcmd: Add IOCTL_PRIVCMD_DM_OP
>
> On
Hi Paul,
[auto build test ERROR on xen-tip/linux-next]
[also build test ERROR on v4.10-rc7 next-20170210]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system]
url:
https://github.com/0day-ci/linux/commits/Paul-Durrant/xen-privcmd-support-for-dm_o
On 02/10/2017 11:28 AM, Paul Durrant wrote:
>> -Original Message-
>> From: Boris Ostrovsky [mailto:boris.ostrov...@oracle.com]
>> Sent: 10 February 2017 16:18
>> To: Paul Durrant ; xen-de...@lists.xenproject.org;
>> linux-ker...@vger.kernel.org
>> Cc: Juergen Gross
>> Subject: Re: [PATCH v
> -Original Message-
> From: Boris Ostrovsky [mailto:boris.ostrov...@oracle.com]
> Sent: 10 February 2017 16:18
> To: Paul Durrant ; xen-de...@lists.xenproject.org;
> linux-ker...@vger.kernel.org
> Cc: Juergen Gross
> Subject: Re: [PATCH v2 2/3] xen/privcmd: Add IOCTL_PRIVCMD_DM_OP
>
> On
On 02/10/2017 09:24 AM, Paul Durrant wrote:
> +static long privcmd_ioctl_dm_op(void __user *udata)
> +{
> + struct privcmd_dm_op kdata;
> + struct privcmd_dm_op_buf *kbufs;
> + unsigned int nr_pages = 0;
> + struct page **pages = NULL;
> + struct xen_dm_op_buf *xbufs = NULL;
> +
Recently a new dm_op[1] hypercall was added to Xen to provide a mechanism
for restricting device emulators (such as QEMU) to a limited set of
hypervisor operations, and being able to audit those operations in the
kernel of the domain in which they run.
This patch adds IOCTL_PRIVCMD_DM_OP as gatewa
