[xen staging] Constify some parameters

[patchbot@xxxxxxx]

commit d9fe1d743fd764cd11e4db8e540d2527adc7b701
Author:     Frediano Ziglio <frediano.ziglio@xxxxxxxxx>
AuthorDate: Thu Feb 22 11:51:19 2024 +0100
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Thu Feb 22 11:51:19 2024 +0100

    Constify some parameters
    
    Make clear they are not changed in the functions.
    
    Signed-off-by: Frediano Ziglio <frediano.ziglio@xxxxxxxxx>
    Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
    Acked-by: Daniel P. Smith <dpsmith@xxxxxxxxxxxxxxxxxxxx> # XSM
    Acked-by: George Dunlap <george.dunlap@xxxxxxxxx> # sched
---
 xen/arch/x86/pv/callback.c | 4 ++--
 xen/common/sched/compat.c  | 2 +-
 xen/common/sched/core.c    | 2 +-
 xen/xsm/flask/flask_op.c   | 8 ++++----
 4 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/xen/arch/x86/pv/callback.c b/xen/arch/x86/pv/callback.c
index 17829304fe..caec4fb16f 100644
--- a/xen/arch/x86/pv/callback.c
+++ b/xen/arch/x86/pv/callback.c
@@ -48,7 +48,7 @@ static void unregister_guest_nmi_callback(void)
     memset(t, 0, sizeof(*t));
 }
 
-static long register_guest_callback(struct callback_register *reg)
+static long register_guest_callback(const struct callback_register *reg)
 {
     long ret = 0;
     struct vcpu *curr = current;
@@ -102,7 +102,7 @@ static long register_guest_callback(struct 
callback_register *reg)
     return ret;
 }
 
-static long unregister_guest_callback(struct callback_unregister *unreg)
+static long unregister_guest_callback(const struct callback_unregister *unreg)
 {
     long ret;
 
diff --git a/xen/common/sched/compat.c b/xen/common/sched/compat.c
index dd97593630..a02204ec9a 100644
--- a/xen/common/sched/compat.c
+++ b/xen/common/sched/compat.c
@@ -26,7 +26,7 @@ CHECK_sched_shutdown;
 CHECK_sched_remote_shutdown;
 #undef xen_sched_remote_shutdown
 
-static int compat_poll(struct compat_sched_poll *compat)
+static int compat_poll(const struct compat_sched_poll *compat)
 {
     struct sched_poll native;
 
diff --git a/xen/common/sched/core.c b/xen/common/sched/core.c
index d177c675c8..c5db373972 100644
--- a/xen/common/sched/core.c
+++ b/xen/common/sched/core.c
@@ -1431,7 +1431,7 @@ static void vcpu_block_enable_events(void)
     vcpu_block();
 }
 
-static long do_poll(struct sched_poll *sched_poll)
+static long do_poll(const struct sched_poll *sched_poll)
 {
     struct vcpu   *v = current;
     struct domain *d = v->domain;
diff --git a/xen/xsm/flask/flask_op.c b/xen/xsm/flask/flask_op.c
index b866e8d05f..ea7dd10dc8 100644
--- a/xen/xsm/flask/flask_op.c
+++ b/xen/xsm/flask/flask_op.c
@@ -469,7 +469,7 @@ static int flask_security_load(struct xen_flask_load *load)
     return ret;
 }
 
-static int flask_devicetree_label(struct xen_flask_devicetree_label *arg)
+static int flask_devicetree_label(const struct xen_flask_devicetree_label *arg)
 {
     int rv;
     char *buf;
@@ -492,7 +492,7 @@ static int flask_devicetree_label(struct 
xen_flask_devicetree_label *arg)
 
 #ifndef COMPAT
 
-static int flask_ocontext_del(struct xen_flask_ocontext *arg)
+static int flask_ocontext_del(const struct xen_flask_ocontext *arg)
 {
     int rv;
 
@@ -506,7 +506,7 @@ static int flask_ocontext_del(struct xen_flask_ocontext 
*arg)
     return security_ocontext_del(arg->ocon, arg->low, arg->high);
 }
 
-static int flask_ocontext_add(struct xen_flask_ocontext *arg)
+static int flask_ocontext_add(const struct xen_flask_ocontext *arg)
 {
     int rv;
 
@@ -550,7 +550,7 @@ static int flask_get_peer_sid(struct xen_flask_peersid *arg)
     return rv;
 }
 
-static int flask_relabel_domain(struct xen_flask_relabel *arg)
+static int flask_relabel_domain(const struct xen_flask_relabel *arg)
 {
     int rc;
     struct domain *d;
--
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