Hi George,
On 18/10/17 11:51, George Dunlap wrote:
Allowing pagetables to point to other pagetables of the same level
(often called 'linear pagetables') has been included in Xen since its
inception; but recently it has been the source of a number of subtle
reference-counting bugs.
It is not use
>>> On 18.10.17 at 15:49, wrote:
> On 10/18/2017 02:41 PM, Jan Beulich wrote:
> On 18.10.17 at 12:51, wrote:
>>> @@ -2334,6 +2368,9 @@ static int _put_page_type(struct page_info *page,
>>> bool preemptible,
>>> ASSERT(ptpg->linear_pt_count > 0);
>>> ptpg = N
On 10/18/2017 02:41 PM, Jan Beulich wrote:
On 18.10.17 at 12:51, wrote:
>> --- a/xen/arch/x86/Kconfig
>> +++ b/xen/arch/x86/Kconfig
>> @@ -37,6 +37,26 @@ source "arch/Kconfig"
>> config PV
>> def_bool y
>>
>> +config PV_LINEAR_PT
>> + bool "Support for PV linear pagetables"
>> +
>>> On 18.10.17 at 12:51, wrote:
> --- a/xen/arch/x86/Kconfig
> +++ b/xen/arch/x86/Kconfig
> @@ -37,6 +37,26 @@ source "arch/Kconfig"
> config PV
> def_bool y
>
> +config PV_LINEAR_PT
> + bool "Support for PV linear pagetables"
> + depends on PV
> + default y
> + -
On Wed, Oct 18, 2017 at 11:51:59AM +0100, George Dunlap wrote:
> Allowing pagetables to point to other pagetables of the same level
> (often called 'linear pagetables') has been included in Xen since its
> inception; but recently it has been the source of a number of subtle
> reference-counting bug
Allowing pagetables to point to other pagetables of the same level
(often called 'linear pagetables') has been included in Xen since its
inception; but recently it has been the source of a number of subtle
reference-counting bugs.
It is not used by Linux or MiniOS; but it used used by NetBSD and
N
