| commit | 06e878b413766778a53be3d25c0373a23679d039 | |
| author | Chenyi Qiang <chenyi.qiang@intel.com> | |
| Tue, 2 Feb 2021 09:02:24 +0000 (2 17:02 +0800) | ||
| committer | Paolo Bonzini <pbonzini@redhat.com> | |
| Thu, 25 Feb 2021 13:14:33 +0000 (25 14:14 +0100) | ||
| tree | 5fbaf0ce96a47137306a10bd2321394951f081e8 | treesnapshot (tar.gz zip) |
| parent | 3a2e982d4774993290a12c75f5918e3caec80d2b | commitdiff |
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>
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>
| target/i386/cpu.c | diffblobblamehistory | |
| target/i386/cpu.h | diffblobblamehistory |