On 2/24/22 15:41, Muchun Song wrote:
> On Thu, Feb 24, 2022 at 3:48 AM Joao Martins
> wrote:
>>
>> Currently memmap_init_zone_device() ends up initializing 32768 pages
>> when it only needs to initialize 128 given tail page reuse. That
>> number is worse with 1GB compound pages, 262144 instead of
On Thu, Feb 24, 2022 at 3:48 AM Joao Martins wrote:
>
> Currently memmap_init_zone_device() ends up initializing 32768 pages
> when it only needs to initialize 128 given tail page reuse. That
> number is worse with 1GB compound pages, 262144 instead of 128. Update
> memmap_init_zone_device() to sk
On Thu, Feb 24, 2022 at 7:47 PM Joao Martins wrote:
>
> On 2/24/22 05:54, Muchun Song wrote:
> > On Thu, Feb 24, 2022 at 3:48 AM Joao Martins
> > wrote:
> >> diff --git a/include/linux/mm.h b/include/linux/mm.h
> >> index 5f549cf6a4e8..b0798b9c6a6a 100644
> >> --- a/include/linux/mm.h
> >> +++ b
On 2/24/22 05:57, Muchun Song wrote:
> On Thu, Feb 24, 2022 at 3:48 AM Joao Martins
> wrote:
>> --- a/mm/page_alloc.c
>> +++ b/mm/page_alloc.c
>> @@ -6653,6 +6653,20 @@ static void __ref __init_zone_device_page(struct page
>> *page, unsigned long pfn,
>> }
>> }
>>
>> +/*
>> + * With com
On 2/24/22 05:54, Muchun Song wrote:
> On Thu, Feb 24, 2022 at 3:48 AM Joao Martins
> wrote:
>> diff --git a/include/linux/mm.h b/include/linux/mm.h
>> index 5f549cf6a4e8..b0798b9c6a6a 100644
>> --- a/include/linux/mm.h
>> +++ b/include/linux/mm.h
>> @@ -3118,7 +3118,7 @@ p4d_t *vmemmap_p4d_popul
On 2/24/22 03:10, Muchun Song wrote:
> On Thu, Feb 24, 2022 at 3:48 AM Joao Martins
> wrote:
>>
>> In preparation for describing a memmap with compound pages, move the
>> actual pte population logic into a separate function
>> vmemmap_populate_address() and have vmemmap_populate_basepages() walk
On 2/24/22 03:02, Muchun Song wrote:
> On Thu, Feb 24, 2022 at 3:48 AM Joao Martins
> wrote:
>>
>> In support of using compound pages for devmap mappings, plumb the pgmap
>> down to the vmemmap_populate implementation. Note that while altmap is
>> retrievable from pgmap the memory hotplug code
