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authorPaolo Bonzini <pbonzini@redhat.com>2023-06-17 00:05:38 +0200
committerPaolo Bonzini <pbonzini@redhat.com>2023-06-26 10:23:01 +0200
commit691925e5a3215caa6096f56070734b95054f800b (patch)
treec8b28e80a5e63504f00b42398ecbbbb3f7234e3d /target/i386/cpu.c
parent8afce497e42bb279bcbc1637ecd30b70fc001947 (diff)
downloadfocaccia-qemu-691925e5a3215caa6096f56070734b95054f800b.tar.gz
focaccia-qemu-691925e5a3215caa6096f56070734b95054f800b.zip
target/i386: TCG supports RDSEED
TCG implements RDSEED, and in fact uses qcrypto_random_bytes which is
secure enough to match hardware behavior.  Expose it to guests.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'target/i386/cpu.c')
-rw-r--r--target/i386/cpu.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index ff3dcd02dc..fc4246223d 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -657,11 +657,10 @@ void x86_cpu_vendor_words2str(char *dst, uint32_t vendor1,
           CPUID_7_0_EBX_BMI1 | CPUID_7_0_EBX_BMI2 | CPUID_7_0_EBX_ADX | \
           CPUID_7_0_EBX_PCOMMIT | CPUID_7_0_EBX_CLFLUSHOPT |            \
           CPUID_7_0_EBX_CLWB | CPUID_7_0_EBX_MPX | CPUID_7_0_EBX_FSGSBASE | \
-          CPUID_7_0_EBX_ERMS | CPUID_7_0_EBX_AVX2)
+          CPUID_7_0_EBX_ERMS | CPUID_7_0_EBX_AVX2 | CPUID_7_0_EBX_RDSEED)
           /* missing:
           CPUID_7_0_EBX_HLE
-          CPUID_7_0_EBX_INVPCID, CPUID_7_0_EBX_RTM,
-          CPUID_7_0_EBX_RDSEED */
+          CPUID_7_0_EBX_INVPCID, CPUID_7_0_EBX_RTM */
 #define TCG_7_0_ECX_FEATURES (CPUID_7_0_ECX_UMIP | CPUID_7_0_ECX_PKU | \
           /* CPUID_7_0_ECX_OSPKE is dynamic */ \
           CPUID_7_0_ECX_LA57 | CPUID_7_0_ECX_PKS | CPUID_7_0_ECX_VAES)