From 501e16b4b4cf5a302363c1ae55fb4fb8e68beb8d Mon Sep 17 00:00:00 2001
From: jiangxin <jiangxin@hygon.cn>
Date: Tue, 24 Aug 2021 17:31:28 +0800
Subject: [PATCH 5/8] anolis: cpu/i386: populate CPUID 0x8000_001F when CSV is
 active

On Hygon platform, bit 30 of EAX indicates whether
this feature is supported in hardware.

When CSV is active, CPUID 0x8000_001F provides
information for it.

Signed-off-by: Xin Jiang <jiangxin@hygon.cn>
Change-Id: Ifdd2a20f7cb4a079ba918928f012e5f64f7059e6
---
 target/i386/cpu.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index aa9e636800..970d9bf184 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -27,6 +27,7 @@
 #include "sysemu/hvf.h"
 #include "kvm/kvm_i386.h"
 #include "sev.h"
+#include "csv.h"
 #include "qapi/error.h"
 #include "qapi/qapi-visit-machine.h"
 #include "qapi/qmp/qerror.h"
@@ -5769,6 +5770,7 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count,
         if (sev_enabled()) {
             *eax = 0x2;
             *eax |= sev_es_enabled() ? 0x8 : 0;
+            *eax |= csv_enabled() ? 0x40000000 : 0; /* bit 30 for CSV */
             *ebx = sev_get_cbit_position() & 0x3f; /* EBX[5:0] */
             *ebx |= (sev_get_reduced_phys_bits() & 0x3f) << 6; /* EBX[11:6] */
         }
-- 
2.17.1