Date: Wed, 26 Jun 2019 17:16:26 +0000 (UTC) From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r349427 - head/sys/amd64/amd64 Message-ID: <201906261716.x5QHGQYB071841@repo.freebsd.org>
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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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