Author: kib
Date: Wed Jun 26 17:16:26 2019
New Revision: 349427
URL: https://svnweb.freebsd.org/changeset/base/349427
Log:
amd64 pmap: Fix pkru handling in pmap_remove().
When pmap_pkru_on_remove() is called, the sva argument value was
advanced. Clear PKRU earlier when sva still specifies the start of
the region.
Noted and reviewed by: alc
Sponsored by: The FreeBSD Foundation
MFC after: 3 days
Modified:
head/sys/amd64/amd64/pmap.c
Modified: head/sys/amd64/amd64/pmap.c
==============================================================================
--- head/sys/amd64/amd64/pmap.c Wed Jun 26 16:56:56 2019 (r349426)
+++ head/sys/amd64/amd64/pmap.c Wed Jun 26 17:16:26 2019 (r349427)
@@ -4998,6 +4998,7 @@ pmap_remove(pmap_t pmap, vm_offset_t sva, vm_offset_t
pmap_delayed_invl_start();
PMAP_LOCK(pmap);
+ pmap_pkru_on_remove(pmap, sva, eva);
/*
* special handling of removing one page. a very
@@ -5091,7 +5092,6 @@ pmap_remove(pmap_t pmap, vm_offset_t sva, vm_offset_t
out:
if (anyvalid)
pmap_invalidate_all(pmap);
- pmap_pkru_on_remove(pmap, sva, eva);
PMAP_UNLOCK(pmap);
pmap_delayed_invl_finish();
vm_page_free_pages_toq(&free, true);
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