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[PATCH RFC v2 16/19] i386: adjust the expected KVM_GET_SUPPORTED_HV_CPUI


From: Vitaly Kuznetsov
Subject: [PATCH RFC v2 16/19] i386: adjust the expected KVM_GET_SUPPORTED_HV_CPUID array size
Date: Wed, 30 Sep 2020 15:40:24 +0200

SYNDBG leaves were recently (Linux-5.8) added to KVM but we haven't
updated the expected size of KVM_GET_SUPPORTED_HV_CPUID output in
KVM so we now make serveral tries before succeeding. Update the
default.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
---
 target/i386/kvm.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/target/i386/kvm.c b/target/i386/kvm.c
index 32678154837f..39a6e89dbb60 100644
--- a/target/i386/kvm.c
+++ b/target/i386/kvm.c
@@ -975,7 +975,8 @@ static struct kvm_cpuid2 *try_get_hv_cpuid(CPUState *cs, 
int max)
 static struct kvm_cpuid2 *get_supported_hv_cpuid(CPUState *cs)
 {
     struct kvm_cpuid2 *cpuid;
-    int max = 7; /* 0x40000000..0x40000005, 0x4000000A */
+    /* 0x40000000..0x40000005, 0x4000000A, 0x40000080..0x40000080 leaves */
+    int max = 10;
     int i;
 
     /*
-- 
2.25.4




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