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target/i386: TCG supports RDSEED

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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>
This commit is contained in:
Paolo Bonzini 2023-06-17 00:05:38 +02:00
parent 8afce497e4
commit 691925e5a3
1 changed files with 2 additions and 3 deletions
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target/i386/cpu.c
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@ -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_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_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_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: /* missing:
CPUID_7_0_EBX_HLE CPUID_7_0_EBX_HLE
CPUID_7_0_EBX_INVPCID, CPUID_7_0_EBX_RTM, CPUID_7_0_EBX_INVPCID, CPUID_7_0_EBX_RTM */
CPUID_7_0_EBX_RDSEED */
#define TCG_7_0_ECX_FEATURES (CPUID_7_0_ECX_UMIP | CPUID_7_0_ECX_PKU | \ #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_OSPKE is dynamic */ \
CPUID_7_0_ECX_LA57 | CPUID_7_0_ECX_PKS | CPUID_7_0_ECX_VAES) CPUID_7_0_ECX_LA57 | CPUID_7_0_ECX_PKS | CPUID_7_0_ECX_VAES)