diff options
| author | Chenyi Qiang <chenyi.qiang@intel.com> | 2021-02-02 17:02:24 +0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-02-25 14:14:33 +0100 |
| commit | 06e878b413766778a53be3d25c0373a23679d039 (patch) | |
| tree | 5fbaf0ce96a47137306a10bd2321394951f081e8 /target/i386/cpu.c | |
| parent | 3a2e982d4774993290a12c75f5918e3caec80d2b (diff) | |
| download | qemu-06e878b413766778a53be3d25c0373a23679d039.zip | |
target/i386: Add bus lock debug exception support
Bus lock debug exception is a feature that can notify the kernel by
generate an #DB trap after the instruction acquires a bus lock when
CPL>0. This allows the kernel to enforce user application throttling or
mitigations.
This feature is enumerated via CPUID.(EAX=7,ECX=0).ECX[bit 24].
Signed-off-by: Chenyi Qiang <chenyi.qiang@intel.com>
Message-Id: <20210202090224.13274-1-chenyi.qiang@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'target/i386/cpu.c')
| -rw-r--r-- | target/i386/cpu.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/target/i386/cpu.c b/target/i386/cpu.c index bc6956561a..50008431c3 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -963,7 +963,7 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = { "avx512bitalg", NULL, "avx512-vpopcntdq", NULL, "la57", NULL, NULL, NULL, NULL, NULL, "rdpid", NULL, - NULL, "cldemote", NULL, "movdiri", + "bus-lock-detect", "cldemote", NULL, "movdiri", "movdir64b", NULL, NULL, "pks", }, .cpuid = { |