Author: kib Date: Sat Apr 14 17:33:16 2018 New Revision: 332504 URL: https://svnweb.freebsd.org/changeset/base/332504
Log: Set PG_G global mapping bit on the trampoline ptes. Trampoline mappings are better treated as global since they are valid in all address spaces, even for PTI. pmap_invalidate_range() must work on global mappings for pti since kernel_pmap invalidations are really same as for non-PTI. Reviewed by: alc, markj Tested by: pho Sponsored by: The FreeBSD Foundation MFC after: 1 month Differential revision: https://reviews.freebsd.org/D15052 Modified: head/sys/amd64/amd64/pmap.c Modified: head/sys/amd64/amd64/pmap.c ============================================================================== --- head/sys/amd64/amd64/pmap.c Sat Apr 14 14:57:32 2018 (r332503) +++ head/sys/amd64/amd64/pmap.c Sat Apr 14 17:33:16 2018 (r332504) @@ -8000,7 +8000,7 @@ pmap_pti_add_kva_locked(vm_offset_t sva, vm_offset_t e for (; sva < eva; sva += PAGE_SIZE) { pte = pmap_pti_pte(sva, &unwire_pde); pa = pmap_kextract(sva); - ptev = pa | X86_PG_RW | X86_PG_V | X86_PG_A | + ptev = pa | X86_PG_RW | X86_PG_V | X86_PG_A | X86_PG_G | (exec ? 0 : pg_nx) | pmap_cache_bits(kernel_pmap, VM_MEMATTR_DEFAULT, FALSE); if (*pte == 0) { _______________________________________________ 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"
