On Mon, 2024-09-30 at 17:30 +0200, Jan Beulich wrote:
> > + */
> > +static int pt_next_level(bool alloc_tbl, pte_t **table, unsigned
> > int offset)
> > +{
> > + pte_t *entry;
> > + mfn_t mfn;
> > +
> > + entry = *table + offset;
> > +
> > + if ( !pte_is_valid(*entry) )
> > + {
> > +
On 27.09.2024 18:33, Oleksii Kurochko wrote:
> +static bool pt_check_entry(pte_t entry, mfn_t mfn, unsigned int flags)
> +{
> +/* Sanity check when modifying an entry. */
> +if ( (flags & PTE_VALID) && mfn_eq(mfn, INVALID_MFN) )
> +{
> +/* We don't allow modifying an invalid ent
Missed to add revision log:
---
Changes in V8:
- drop PTE_LEAF_MASK.
- update the comment above pte_is_table(): drop table number and use
just "the encoding of the permission bits".
- declare pte_is_table() as static.
- drop const from the argument of pte_is_table
- drop the "const" commen
Implement map_pages_to_xen() which requires several
functions to manage page tables and entries:
- pt_update()
- pt_mapping_level()
- pt_update_entry()
- pt_next_level()
- pt_check_entry()
To support these operations, add functions for creating,
mapping, and unmapping Xen tables:
- create_table()
