x86_cpu_change_kvm_default() was only used out of kvm-cpu.c by
the pc-i440fx-2.1 machine, which got removed. Make it static,
and remove its declaration. "kvm-cpu.h" is now empty, remove it.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20240305134221.30924-8-philmd@linaro.org>
---
 target/i386/kvm/kvm-cpu.h | 41 ---------------------------------------
 target/i386/kvm/kvm-cpu.c |  3 +--
 2 files changed, 1 insertion(+), 43 deletions(-)
 delete mode 100644 target/i386/kvm/kvm-cpu.h

diff --git a/target/i386/kvm/kvm-cpu.h b/target/i386/kvm/kvm-cpu.h
deleted file mode 100644
index e858ca21e5..0000000000
--- a/target/i386/kvm/kvm-cpu.h
+++ /dev/null
@@ -1,41 +0,0 @@
-/*
- * i386 KVM CPU type and functions
- *
- *  Copyright (c) 2003 Fabrice Bellard
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef KVM_CPU_H
-#define KVM_CPU_H
-
-#ifdef CONFIG_KVM
-/*
- * Change the value of a KVM-specific default
- *
- * If value is NULL, no default will be set and the original
- * value from the CPU model table will be kept.
- *
- * It is valid to call this function only for properties that
- * are already present in the kvm_default_props table.
- */
-void x86_cpu_change_kvm_default(const char *prop, const char *value);
-
-#else /* !CONFIG_KVM */
-
-#define x86_cpu_change_kvm_default(a, b)
-
-#endif /* CONFIG_KVM */
-
-#endif /* KVM_CPU_H */
diff --git a/target/i386/kvm/kvm-cpu.c b/target/i386/kvm/kvm-cpu.c
index 9c791b7b05..cb8c73d20c 100644
--- a/target/i386/kvm/kvm-cpu.c
+++ b/target/i386/kvm/kvm-cpu.c
@@ -10,7 +10,6 @@
 #include "qemu/osdep.h"
 #include "cpu.h"
 #include "host-cpu.h"
-#include "kvm-cpu.h"
 #include "qapi/error.h"
 #include "sysemu/sysemu.h"
 #include "hw/boards.h"
@@ -144,7 +143,7 @@ static PropValue kvm_default_props[] = {
 /*
  * Only for builtin_x86_defs models initialized with x86_register_cpudef_types.
  */
-void x86_cpu_change_kvm_default(const char *prop, const char *value)
+static void x86_cpu_change_kvm_default(const char *prop, const char *value)
 {
     PropValue *pv;
     for (pv = kvm_default_props; pv->prop; pv++) {
-- 
2.41.0

On Wed, Mar 27, 2024 at 10:51:10AM +0100, Philippe Mathieu-Daudé wrote:
> Date: Wed, 27 Mar 2024 10:51:10 +0100
> From: Philippe Mathieu-Daudé <philmd@linaro.org>
> Subject: [PATCH-for-9.1 v2 08/21] target/i386/kvm: Remove
>  x86_cpu_change_kvm_default() and 'kvm-cpu.h'
> X-Mailer: git-send-email 2.41.0
> 
> x86_cpu_change_kvm_default() was only used out of kvm-cpu.c by
> the pc-i440fx-2.1 machine, which got removed. Make it static,
> and remove its declaration. "kvm-cpu.h" is now empty, remove it.
> 
> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
> Reviewed-by: Thomas Huth <thuth@redhat.com>
> Message-Id: <20240305134221.30924-8-philmd@linaro.org>
> ---
>  target/i386/kvm/kvm-cpu.h | 41 ---------------------------------------
>  target/i386/kvm/kvm-cpu.c |  3 +--
>  2 files changed, 1 insertion(+), 43 deletions(-)
>  delete mode 100644 target/i386/kvm/kvm-cpu.h
> 
> diff --git a/target/i386/kvm/kvm-cpu.h b/target/i386/kvm/kvm-cpu.h
> deleted file mode 100644
> index e858ca21e5..0000000000
> --- a/target/i386/kvm/kvm-cpu.h
> +++ /dev/null
> @@ -1,41 +0,0 @@
> -/*
> - * i386 KVM CPU type and functions
> - *
> - *  Copyright (c) 2003 Fabrice Bellard
> - *
> - * This library is free software; you can redistribute it and/or
> - * modify it under the terms of the GNU Lesser General Public
> - * License as published by the Free Software Foundation; either
> - * version 2 of the License, or (at your option) any later version.
> - *
> - * This library is distributed in the hope that it will be useful,
> - * but WITHOUT ANY WARRANTY; without even the implied warranty of
> - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> - * Lesser General Public License for more details.
> - *
> - * You should have received a copy of the GNU Lesser General Public
> - * License along with this library; if not, see <http://www.gnu.org/licenses/>.
> - */
> -
> -#ifndef KVM_CPU_H
> -#define KVM_CPU_H
> -
> -#ifdef CONFIG_KVM
> -/*
> - * Change the value of a KVM-specific default
> - *
> - * If value is NULL, no default will be set and the original
> - * value from the CPU model table will be kept.
> - *
> - * It is valid to call this function only for properties that
> - * are already present in the kvm_default_props table.
> - */
> -void x86_cpu_change_kvm_default(const char *prop, const char *value);

Features in kvm_default_props[] are supposed to be supported on the
oldest kernal version (v4.5, from docs/system/target-i386.rst).

So future PC machines will not use this interface to adjust
compatibility with the oldest v4.5 kernel. And it makes sense to stop
exposing this interface in the header. Thus,

Reviewed-by: Zhao Liu <zhao1.liu@intel.com>