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[PATCH v2 4/7] xsm: Use __initconst_cf_clobber for xsm_ops
- To: Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Date: Mon, 14 Feb 2022 12:56:29 +0000
- Authentication-results: esa3.hc3370-68.iphmx.com; dkim=none (message not signed) header.i=none
- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Delivery-date: Mon, 14 Feb 2022 12:57:03 +0000
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- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
All calls through xsm_ops are fully altcall'd. Harden all fnptr targets.
This yields:
(XEN) altcall: Optimised away 197 endbr64 instructions
of 1655 on an everything-enabled build of Xen, which is ~12%.
Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
Reviewed-by: Daniel P. Smith <dpsmith@xxxxxxxxxxxxxxxxxxxx>
---
xen/xsm/dummy.c | 2 +-
xen/xsm/flask/hooks.c | 2 +-
xen/xsm/silo.c | 2 +-
3 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/xen/xsm/dummy.c b/xen/xsm/dummy.c
index 4d29a9aa5b9f..8c044ef61500 100644
--- a/xen/xsm/dummy.c
+++ b/xen/xsm/dummy.c
@@ -13,7 +13,7 @@
#define XSM_NO_WRAPPERS
#include <xsm/dummy.h>
-static const struct xsm_ops __initconstrel dummy_ops = {
+static const struct xsm_ops __initconst_cf_clobber dummy_ops = {
.security_domaininfo = xsm_security_domaininfo,
.domain_create = xsm_domain_create,
.getdomaininfo = xsm_getdomaininfo,
diff --git a/xen/xsm/flask/hooks.c b/xen/xsm/flask/hooks.c
index 63484e323c09..0bf63ffa84c4 100644
--- a/xen/xsm/flask/hooks.c
+++ b/xen/xsm/flask/hooks.c
@@ -1765,7 +1765,7 @@ static int cf_check flask_argo_send(
#endif
-static const struct xsm_ops __initconstrel flask_ops = {
+static const struct xsm_ops __initconst_cf_clobber flask_ops = {
.security_domaininfo = flask_security_domaininfo,
.domain_create = flask_domain_create,
.getdomaininfo = flask_getdomaininfo,
diff --git a/xen/xsm/silo.c b/xen/xsm/silo.c
index 4d5fc98e7e54..b89b36428784 100644
--- a/xen/xsm/silo.c
+++ b/xen/xsm/silo.c
@@ -102,7 +102,7 @@ static int cf_check silo_argo_send(
#endif
-static const struct xsm_ops __initconstrel silo_xsm_ops = {
+static const struct xsm_ops __initconst_cf_clobber silo_xsm_ops = {
.evtchn_unbound = silo_evtchn_unbound,
.evtchn_interdomain = silo_evtchn_interdomain,
.grant_mapref = silo_grant_mapref,
--
2.11.0
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