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[PULL 10/18] target/i386: do not accept RDSEED if CPUID bit absent
From: |
Paolo Bonzini |
Subject: |
[PULL 10/18] target/i386: do not accept RDSEED if CPUID bit absent |
Date: |
Mon, 26 Jun 2023 13:14:37 +0200 |
Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
target/i386/tcg/translate.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/target/i386/tcg/translate.c b/target/i386/tcg/translate.c
index 0de068d4b79..4ef45bbd71e 100644
--- a/target/i386/tcg/translate.c
+++ b/target/i386/tcg/translate.c
@@ -3925,12 +3925,20 @@ static bool disas_insn(DisasContext *s, CPUState *cpu)
break;
case 7: /* RDSEED */
+ if (mod != 3 ||
+ (s->prefix & (PREFIX_LOCK | PREFIX_REPZ | PREFIX_REPNZ)) ||
+ !(s->cpuid_7_0_ebx_features & CPUID_7_0_EBX_RDSEED)) {
+ goto illegal_op;
+ }
+ goto do_rdrand;
+
case 6: /* RDRAND */
if (mod != 3 ||
(s->prefix & (PREFIX_LOCK | PREFIX_REPZ | PREFIX_REPNZ)) ||
!(s->cpuid_ext_features & CPUID_EXT_RDRAND)) {
goto illegal_op;
}
+ do_rdrand:
translator_io_start(&s->base);
gen_helper_rdrand(s->T0, cpu_env);
rm = (modrm & 7) | REX_B(s);
--
2.41.0
- [PULL 00/18] Misc, i386 patches for 2023-06-26, Paolo Bonzini, 2023/06/26
- [PULL 03/18] numa: Validate cluster and NUMA node boundary if required, Paolo Bonzini, 2023/06/26
- [PULL 04/18] hw/arm: Validate cluster and NUMA node boundary, Paolo Bonzini, 2023/06/26
- [PULL 01/18] build: further refine build.ninja rules, Paolo Bonzini, 2023/06/26
- [PULL 02/18] hw/remote/proxy: Remove dubious 'event_notifier-posix.c' include, Paolo Bonzini, 2023/06/26
- [PULL 06/18] kvm: reuse per-vcpu stats fd to avoid vcpu interruption, Paolo Bonzini, 2023/06/26
- [PULL 05/18] hw/riscv: Validate cluster and NUMA node boundary, Paolo Bonzini, 2023/06/26
- [PULL 07/18] target/i386: fix INVD vmexit, Paolo Bonzini, 2023/06/26
- [PULL 08/18] target/i386: TCG supports 3DNow! prefetch(w), Paolo Bonzini, 2023/06/26
- [PULL 09/18] target/i386: TCG supports RDSEED, Paolo Bonzini, 2023/06/26
- [PULL 10/18] target/i386: do not accept RDSEED if CPUID bit absent,
Paolo Bonzini <=
- [PULL 11/18] target/i386: TCG supports XSAVEERPTR, Paolo Bonzini, 2023/06/26
- [PULL 13/18] target/i386: Intel only supports SYSCALL/SYSRET in long mode, Paolo Bonzini, 2023/06/26
- [PULL 12/18] target/i386: TCG supports WBNOINVD, Paolo Bonzini, 2023/06/26
- [PULL 16/18] target/i386: implement RDPID in TCG, Paolo Bonzini, 2023/06/26
- [PULL 14/18] target/i386: AMD only supports SYSENTER/SYSEXIT in 32-bit mode, Paolo Bonzini, 2023/06/26
- [PULL 15/18] target/i386: sysret and sysexit are privileged, Paolo Bonzini, 2023/06/26
- [PULL 17/18] target/i386: implement SYSCALL/SYSRET in 32-bit emulators, Paolo Bonzini, 2023/06/26
- [PULL 18/18] git-submodule.sh: allow running in validate mode without previous update, Paolo Bonzini, 2023/06/26
- Re: [PULL 00/18] Misc, i386 patches for 2023-06-26, Richard Henderson, 2023/06/26