Re: [v3 9/9] s390: teach platforms not to zero struct pages memory

2017-05-15 Thread Pasha Tatashin
Ah OK, I will include the change. Thank you, Pasha On 05/15/2017 07:17 PM, Heiko Carstens wrote: Hello Pasha, Thank you for looking at this patch. I am worried to make the proposed change, because, as I understand in this case we allocate memory not for "struct page"s but for table that hold

Re: [v3 9/9] s390: teach platforms not to zero struct pages memory

2017-05-15 Thread Heiko Carstens
Hello Pasha, > Thank you for looking at this patch. I am worried to make the proposed > change, because, as I understand in this case we allocate memory not for > "struct page"s but for table that hold them. So, we will change the behavior > from the current one, where this table is allocated zero

Re: [v3 9/9] s390: teach platforms not to zero struct pages memory

2017-05-15 Thread Pasha Tatashin
Hi Heiko, Thank you for looking at this patch. I am worried to make the proposed change, because, as I understand in this case we allocate memory not for "struct page"s but for table that hold them. So, we will change the behavior from the current one, where this table is allocated zeroed, but

Re: [v3 9/9] s390: teach platforms not to zero struct pages memory

2017-05-08 Thread Heiko Carstens
On Fri, May 05, 2017 at 01:03:16PM -0400, Pavel Tatashin wrote: > If we are using deferred struct page initialization feature, most of > "struct page"es are getting initialized after other CPUs are started, and > hence we are benefiting from doing this job in parallel. However, we are > still zeroi

[v3 9/9] s390: teach platforms not to zero struct pages memory

2017-05-05 Thread Pavel Tatashin
If we are using deferred struct page initialization feature, most of "struct page"es are getting initialized after other CPUs are started, and hence we are benefiting from doing this job in parallel. However, we are still zeroing all the memory that is allocated for "struct pages" using the boot CP