Author: kib
Date: Thu May 16 14:33:32 2019
New Revision: 347698
URL: https://svnweb.freebsd.org/changeset/base/347698
Log:
amd64 pmap: sysctl vm.pmap.pcid_save_cnt should be read-only.
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Modified:
head/sys/amd64/amd64/pmap.c
Modified: head/sys/amd64/amd64/pmap.c
==============================================================================
--- head/sys/amd64/amd64/pmap.c Thu May 16 14:29:09 2019 (r347697)
+++ head/sys/amd64/amd64/pmap.c Thu May 16 14:33:32 2019 (r347698)
@@ -466,7 +466,7 @@ pmap_pcid_save_cnt_proc(SYSCTL_HANDLER_ARGS)
}
return (sysctl_handle_64(oidp, &res, 0, req));
}
-SYSCTL_PROC(_vm_pmap, OID_AUTO, pcid_save_cnt, CTLTYPE_U64 | CTLFLAG_RW |
+SYSCTL_PROC(_vm_pmap, OID_AUTO, pcid_save_cnt, CTLTYPE_U64 | CTLFLAG_RD |
CTLFLAG_MPSAFE, NULL, 0, pmap_pcid_save_cnt_proc, "QU",
"Count of saved TLB context on switch");
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