Author: markj
Date: Wed Oct 23 13:40:39 2019
New Revision: 353921
URL: https://svnweb.freebsd.org/changeset/base/353921
Log:
MFC r352622:
Set NX in mappings created by pmap_kenter() and pmap_kenter_attr().
Modified:
stable/12/sys/amd64/amd64/pmap.c
Directory Properties:
stable/12/ (props changed)
Modified: stable/12/sys/amd64/amd64/pmap.c
==============================================================================
--- stable/12/sys/amd64/amd64/pmap.c Wed Oct 23 13:21:15 2019
(r353920)
+++ stable/12/sys/amd64/amd64/pmap.c Wed Oct 23 13:40:39 2019
(r353921)
@@ -3135,7 +3135,7 @@ pmap_kenter(vm_offset_t va, vm_paddr_t pa)
pt_entry_t *pte;
pte = vtopte(va);
- pte_store(pte, pa | X86_PG_RW | X86_PG_V | pg_g);
+ pte_store(pte, pa | X86_PG_RW | X86_PG_V | pg_g | pg_nx);
}
static __inline void
@@ -3146,7 +3146,7 @@ pmap_kenter_attr(vm_offset_t va, vm_paddr_t pa, int mo
pte = vtopte(va);
cache_bits = pmap_cache_bits(kernel_pmap, mode, 0);
- pte_store(pte, pa | X86_PG_RW | X86_PG_V | pg_g | cache_bits);
+ pte_store(pte, pa | X86_PG_RW | X86_PG_V | pg_g | pg_nx | cache_bits);
}
/*
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