On Thu, 23 Jan 2020, Mark Johnston wrote:
Author: markj
Date: Thu Jan 23 17:18:58 2020
New Revision: 357055
URL: https://svnweb.freebsd.org/changeset/base/357055
Log:
sparc64: Busy the TSB page before freeing it in pmap_release().
This is now required by vm_page_free().
PR: 243534
Reported and tested by: Michael Reim <krail...@elderlinux.org>
Modified:
head/sys/sparc64/sparc64/pmap.c
Modified: head/sys/sparc64/sparc64/pmap.c
==============================================================================
--- head/sys/sparc64/sparc64/pmap.c Thu Jan 23 17:08:33 2020
(r357054)
+++ head/sys/sparc64/sparc64/pmap.c Thu Jan 23 17:18:58 2020
(r357055)
@@ -1302,6 +1302,7 @@ pmap_release(pmap_t pm)
m = TAILQ_FIRST(&obj->memq);
m->md.pmap = NULL;
vm_page_unwire_noq(m);
+ vm_page_xbusy(m);
vm_page_xbusy() is unsafe long-term and I will be removing it as soon as I
get patches into drm. It technically 'works' now but not for great
reasons.
Thanks,
Jeff
vm_page_free_zero(m);
}
VM_OBJECT_WUNLOCK(obj);
_______________________________________________
svn-src-all@freebsd.org mailing list
https://lists.freebsd.org/mailman/listinfo/svn-src-all
To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
