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[PATCH] target/i386: Fix wrong count setting
From: |
Yang Zhong |
Subject: |
[PATCH] target/i386: Fix wrong count setting |
Date: |
Mon, 30 May 2022 09:18:34 -0400 |
The previous patch used wrong count setting with index value, which got wrong
value from CPUID(EAX=12,ECX=0):EAX. So the SGX1 instruction can't be exposed
to VM and the SGX decice can't work in VM.
Fixes: d19d6ffa0710 ("target/i386: introduce helper to access supported CPUID")
Signed-off-by: Yang Zhong <yang.zhong@intel.com>
---
target/i386/cpu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index bb6a5dd498..9fdfec9d8b 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -5559,7 +5559,7 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index,
uint32_t count,
* supports. Features can be further restricted by userspace, but not
* made more permissive.
*/
- x86_cpu_get_supported_cpuid(0x12, index, eax, ebx, ecx, edx);
+ x86_cpu_get_supported_cpuid(0x12, count, eax, ebx, ecx, edx);
if (count == 0) {
*eax &= env->features[FEAT_SGX_12_0_EAX];
--
2.30.2
- [PATCH] target/i386: Fix wrong count setting,
Yang Zhong <=