On 10/19/21 20:52, Jason Gunthorpe wrote:
On Tue, Oct 19, 2021 at 08:49:29PM +0200, Thomas Hellström wrote:
Hi,
On 10/19/21 20:21, Jason Gunthorpe wrote:
PUD and PMD entries do not have a special bit.
get_user_pages_fast() considers any page that passed pmd_huge() as
usable:
On Tue, Oct 19, 2021 at 08:49:29PM +0200, Thomas Hellström wrote:
> Hi,
>
> On 10/19/21 20:21, Jason Gunthorpe wrote:
> > PUD and PMD entries do not have a special bit.
> >
> > get_user_pages_fast() considers any page that passed pmd_huge() as
> > usable:
> >
> > if (unlikely(pmd_tra
Hi,
On 10/19/21 20:21, Jason Gunthorpe wrote:
PUD and PMD entries do not have a special bit.
get_user_pages_fast() considers any page that passed pmd_huge() as
usable:
if (unlikely(pmd_trans_huge(pmd) || pmd_huge(pmd) ||
pmd_devmap(pmd))) {
And vmf
PUD and PMD entries do not have a special bit.
get_user_pages_fast() considers any page that passed pmd_huge() as
usable:
if (unlikely(pmd_trans_huge(pmd) || pmd_huge(pmd) ||
pmd_devmap(pmd))) {
And vmf_insert_pfn_pmd_prot() unconditionally sets
