From 85583352f3bc28badd4cb336517f6a4eb440d5b0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Hyman=20Huang=28=E9=BB=84=E5=8B=87=29?=
 <huangy81@chinatelecom.cn>
Date: Sun, 26 Jun 2022 01:38:34 +0800
Subject: [PATCH 2/3] accel/kvm/kvm-all: Introduce kvm_dirty_ring_size function
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Introduce kvm_dirty_ring_size util function to help calculate
dirty ring ful time.

Signed-off-by: Hyman Huang(黄勇) <huangy81@chinatelecom.cn>
Acked-by: Peter Xu <peterx@redhat.com>
Message-Id: <f9ce1f550bfc0e3a1f711e17b1dbc8f701700e56.1656177590.git.huangy81@chinatelecom.cn>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
---
 accel/kvm/kvm-all.c    | 5 +++++
 accel/stubs/kvm-stub.c | 5 +++++
 include/sysemu/kvm.h   | 2 ++
 3 files changed, 12 insertions(+)

diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c
index 3bc6eb6294..d0c4310507 100644
--- a/accel/kvm/kvm-all.c
+++ b/accel/kvm/kvm-all.c
@@ -2332,6 +2332,11 @@ bool kvm_dirty_ring_enabled(void)
     return kvm_state->kvm_dirty_ring_size ? true : false;
 }
 
+uint32_t kvm_dirty_ring_size(void)
+{
+    return kvm_state->kvm_dirty_ring_size;
+}
+
 static int kvm_init(MachineState *ms)
 {
     MachineClass *mc = MACHINE_GET_CLASS(ms);
diff --git a/accel/stubs/kvm-stub.c b/accel/stubs/kvm-stub.c
index 5319573e00..1128cb2928 100644
--- a/accel/stubs/kvm-stub.c
+++ b/accel/stubs/kvm-stub.c
@@ -152,4 +152,9 @@ bool kvm_dirty_ring_enabled(void)
 {
     return false;
 }
+
+uint32_t kvm_dirty_ring_size(void)
+{
+    return 0;
+}
 #endif
diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h
index 2623775c27..19c5c8402a 100644
--- a/include/sysemu/kvm.h
+++ b/include/sysemu/kvm.h
@@ -549,4 +549,6 @@ bool kvm_cpu_check_are_resettable(void);
 bool kvm_arch_cpu_check_are_resettable(void);
 
 bool kvm_dirty_ring_enabled(void);
+
+uint32_t kvm_dirty_ring_size(void);
 #endif
-- 
2.27.0