| Message ID | 20240215103205.2607016-4-ryan.roberts@arm.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | Transparent Contiguous PTEs for User Mappings | expand |
On 15.02.24 11:31, Ryan Roberts wrote: > The goal is to be able to advance a PTE by an arbitrary number of PFNs. > So introduce a new API that takes a nr param. Define the default > implementation here and allow for architectures to override. > pte_next_pfn() becomes a wrapper around pte_advance_pfn(). > > Follow up commits will convert each overriding architecture's > pte_next_pfn() to pte_advance_pfn(). > > Signed-off-by: Ryan Roberts <ryan.roberts@arm.com> > --- > include/linux/pgtable.h | 9 ++++++--- > 1 file changed, 6 insertions(+), 3 deletions(-) > > diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h > index 231370e1b80f..b7ac8358f2aa 100644 > --- a/include/linux/pgtable.h > +++ b/include/linux/pgtable.h > @@ -212,14 +212,17 @@ static inline int pmd_dirty(pmd_t pmd) > #define arch_flush_lazy_mmu_mode() do {} while (0) > #endif > > - > #ifndef pte_next_pfn > -static inline pte_t pte_next_pfn(pte_t pte) > +#ifndef pte_advance_pfn > +static inline pte_t pte_advance_pfn(pte_t pte, unsigned long nr) > { > - return __pte(pte_val(pte) + (1UL << PFN_PTE_SHIFT)); > + return __pte(pte_val(pte) + (nr << PFN_PTE_SHIFT)); > } > #endif > > +#define pte_next_pfn(pte) pte_advance_pfn(pte, 1) > +#endif > + > #ifndef set_ptes > /** > * set_ptes - Map consecutive pages to a contiguous range of addresses. Acked-by: David Hildenbrand <david@redhat.com>
diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h index 231370e1b80f..b7ac8358f2aa 100644 --- a/include/linux/pgtable.h +++ b/include/linux/pgtable.h @@ -212,14 +212,17 @@ static inline int pmd_dirty(pmd_t pmd) #define arch_flush_lazy_mmu_mode() do {} while (0) #endif - #ifndef pte_next_pfn -static inline pte_t pte_next_pfn(pte_t pte) +#ifndef pte_advance_pfn +static inline pte_t pte_advance_pfn(pte_t pte, unsigned long nr) { - return __pte(pte_val(pte) + (1UL << PFN_PTE_SHIFT)); + return __pte(pte_val(pte) + (nr << PFN_PTE_SHIFT)); } #endif +#define pte_next_pfn(pte) pte_advance_pfn(pte, 1) +#endif + #ifndef set_ptes /** * set_ptes - Map consecutive pages to a contiguous range of addresses.
The goal is to be able to advance a PTE by an arbitrary number of PFNs. So introduce a new API that takes a nr param. Define the default implementation here and allow for architectures to override. pte_next_pfn() becomes a wrapper around pte_advance_pfn(). Follow up commits will convert each overriding architecture's pte_next_pfn() to pte_advance_pfn(). Signed-off-by: Ryan Roberts <ryan.roberts@arm.com> --- include/linux/pgtable.h | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-)