[PATCH RFC 05/11] mm: convert PTE table entries in ptep_get()
Muhammad Usama Anjum <[email protected]>
| Newsgroups | org.xenproject.lists.xen-devel,dev.linux.lists.damon,org.freedesktop.lists.dri-devel,org.freedesktop.lists.intel-gfx,org.kernel.vger.bpf,org.kernel.vger.linux-arch,org.kernel.vger.linux-fsdevel,org.kernel.vger.linux-kernel,org.kernel.vger.linux-parisc,org.kernel.vger.linux-perf-users,org.kernel.vger.linux-trace-kernel,org.kvack.linux-mm |
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| Message-ID | <[email protected]> |
ptep_get() now accepts a pointer to hw_pte_t storage but must continue to return a logical pte_t value. Add __pte_from_hw() as the conversion hook and apply it in the generic ptep_get() implementation. Signed-off-by: Muhammad Usama Anjum <[email protected]> --- include/linux/pgtable.h | 2 +- include/linux/pgtable_types.h | 1 + 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h index dad80d264aac2..3003ac9cd81fe 100644 --- a/include/linux/pgtable.h +++ b/include/linux/pgtable.h @@ -493,7 +493,7 @@ static inline int pudp_set_access_flags(struct vm_area_struct *vma, #ifndef ptep_get static inline pte_t ptep_get(hw_pte_t *ptep) { - return READ_ONCE(*ptep); + return READ_ONCE(__pte_from_hw(*ptep)); } #endif diff --git a/include/linux/pgtable_types.h b/include/linux/pgtable_types.h index ed5dba42a4f8c..61afe27307ec2 100644 --- a/include/linux/pgtable_types.h +++ b/include/linux/pgtable_types.h @@ -6,6 +6,7 @@ #ifndef __HAVE_ARCH_HW_PTE_T #define hw_pte_t pte_t +#define __pte_from_hw(pte) (pte) #endif #endif /* _LINUX_PGTABLE_TYPES_H */ -- 2.47.3