xen/sysctl: wrap around XEN_SYSCTL_physinfo

The following functions are only used to deal with XEN_SYSCTL_physinfo,
then they shall be wrapped:
- arch_do_physinfo()
- get_outstanding_claims()

Signed-off-by: Penny Zheng <Penny.Zheng@amd.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Acked-by: Jan Beulich <jbeulich@suse.com>

xen/arch/arm/sysctl.c

@@ -15,6 +15,7 @@
 #include <asm/arm64/sve.h>
 #include <public/sysctl.h>
 
+#ifdef CONFIG_SYSCTL
 void arch_do_physinfo(struct xen_sysctl_physinfo *pi)
 {
     pi->capabilities |= XEN_SYSCTL_PHYSCAP_hvm | XEN_SYSCTL_PHYSCAP_hap;
@@ -22,6 +23,7 @@ void arch_do_physinfo(struct xen_sysctl_physinfo *pi)
     pi->arch_capabilities |= MASK_INSR(sve_encode_vl(get_sys_vl_len()),
                                        XEN_SYSCTL_PHYSCAP_ARM_SVE_MASK);
 }
+#endif
 
 long arch_do_sysctl(struct xen_sysctl *sysctl,
                     XEN_GUEST_HANDLE_PARAM(xen_sysctl_t) u_sysctl)

xen/arch/riscv/stubs.c

@@ -310,10 +310,12 @@ long arch_do_sysctl(struct xen_sysctl *sysctl,
     BUG_ON("unimplemented");
 }
 
+#ifdef CONFIG_SYSCTL
 void arch_do_physinfo(struct xen_sysctl_physinfo *pi)
 {
     BUG_ON("unimplemented");
 }
+#endif /* CONFIG_SYSCTL */
 
 /* p2m.c */
 

xen/arch/x86/sysctl.c

@@ -91,6 +91,7 @@ static long cf_check smt_up_down_helper(void *data)
     return ret;
 }
 
+#ifdef CONFIG_SYSCTL
 void arch_do_physinfo(struct xen_sysctl_physinfo *pi)
 {
     memcpy(pi->hw_cap, boot_cpu_data.x86_capability,
@@ -104,6 +105,7 @@ void arch_do_physinfo(struct xen_sysctl_physinfo *pi)
     if ( IS_ENABLED(CONFIG_SHADOW_PAGING) )
         pi->capabilities |= XEN_SYSCTL_PHYSCAP_shadow;
 }
+#endif /* CONFIG_SYSCTL */
 
 long arch_do_sysctl(
     struct xen_sysctl *sysctl, XEN_GUEST_HANDLE_PARAM(xen_sysctl_t) u_sysctl)

xen/common/page_alloc.c

@@ -601,6 +601,7 @@ out:
     return ret;
 }
 
+#ifdef CONFIG_SYSCTL
 void get_outstanding_claims(uint64_t *free_pages, uint64_t *outstanding_pages)
 {
     spin_lock(&heap_lock);
@@ -608,6 +609,7 @@ void get_outstanding_claims(uint64_t *free_pages, uint64_t *outstanding_pages)
     *free_pages = avail_heap_pages(MEMZONE_XEN + 1, NR_ZONES - 1, -1);
     spin_unlock(&heap_lock);
 }
+#endif /* CONFIG_SYSCTL */
 
 static bool __read_mostly first_node_initialised;
 #ifndef CONFIG_SEPARATE_XENHEAP