On 6/28/23 7:03 AM, Ritesh Harjani (IBM) wrote:
> "Aneesh Kumar K.V" writes:
>> +int __meminit vmemmap_check_pmd(pmd_t *pmd, int node,
>> +unsigned long addr, unsigned long next)
>> +{
>> +int large = pmd_large(*pmd);
>> +
>> +if (pmd_large(*pmd))
>
> we
"Aneesh Kumar K.V" writes:
> This is in preparation to update radix to implement vmemmap optimization
> for devdax. Below are the rules w.r.t radix vmemmap mapping
>
> 1. First try to map things using PMD (2M)
> 2. With altmap if altmap cross-boundary check returns true, fall back to
>PAGE_SI
This is in preparation to update radix to implement vmemmap optimization
for devdax. Below are the rules w.r.t radix vmemmap mapping
1. First try to map things using PMD (2M)
2. With altmap if altmap cross-boundary check returns true, fall back to
PAGE_SIZE
3. If we can't allocate PMD_SIZE back
