Author: markj Date: Thu May 14 15:49:37 2020 New Revision: 361031 URL: https://svnweb.freebsd.org/changeset/base/361031
Log: Assert that page table traversal functions don't operate on superpages. Reviewed by: kib MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D24828 Modified: head/sys/amd64/amd64/pmap.c Modified: head/sys/amd64/amd64/pmap.c ============================================================================== --- head/sys/amd64/amd64/pmap.c Thu May 14 12:52:08 2020 (r361030) +++ head/sys/amd64/amd64/pmap.c Thu May 14 15:49:37 2020 (r361031) @@ -1317,6 +1317,8 @@ pmap_pdpe_to_pde(pdp_entry_t *pdpe, vm_offset_t va) { pd_entry_t *pde; + KASSERT((*pdpe & PG_PS) == 0, + ("%s: pdpe %#lx is a leaf", __func__, *pdpe)); pde = (pd_entry_t *)PHYS_TO_DMAP(*pdpe & PG_FRAME); return (&pde[pmap_pde_index(va)]); } @@ -1341,6 +1343,8 @@ pmap_pde_to_pte(pd_entry_t *pde, vm_offset_t va) { pt_entry_t *pte; + KASSERT((*pde & PG_PS) == 0, + ("%s: pde %#lx is a leaf", __func__, *pde)); pte = (pt_entry_t *)PHYS_TO_DMAP(*pde & PG_FRAME); return (&pte[pmap_pte_index(va)]); } _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
