[PATCH v2] drivers: xen: unmap Enlighten page before jumping to Linux
Dmytro_Firsov at epam.com
Fri Jul 22 10:49:23 CEST 2022
On 21.07.22 18:11, Oleksandr wrote:
> On 19.07.22 17:55, Dmytro Firsov wrote:
> Hello Dmytro
> First of all, thanks for fixing this issue.
> Patch looks good, just a nit below.
>> + reservation.domid = DOMID_SELF;
>> + reservation.extent_order = 0;
>> + reservation.address_bits = 0;
> I think the explicit field's zeroing could be dropped now.
Per my understanding, both of this zeros matters, so I decided to set
them explicitly (even with struct zeroing):
- for `extent_order` - zero means "no additional shift for PFN_SHIFT",
so we are using 4K pages;
- for `address_bits` - zero means "the user has no addressing restriction".
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