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amd64 pmap: Fix pkru handling in pmap_remove().

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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
This commit is contained in:
Konstantin Belousov 2019-06-26 17:16:26 +00:00
parent b726d74fce
commit 7256d0fcfd
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=349427
1 changed files with 1 additions and 1 deletions
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2
sys/amd64/amd64/pmap.c
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@ -4998,6 +4998,7 @@ pmap_remove(pmap_t pmap, vm_offset_t sva, vm_offset_t eva)
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 eva)
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);