diff mbox series

target/i386: Fix wrong count setting

Message ID 20220530131834.1222801-1-yang.zhong@intel.com
State New
Headers show
Series target/i386: Fix wrong count setting | expand

Commit Message

Yang Zhong May 30, 2022, 1:18 p.m. UTC 
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(-)

Comments

Paolo Bonzini May 31, 2022, 10:10 a.m. UTC | #1 
Queued, thanks.

Paolo
diff mbox series

Patch

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];