diff options
| author | Like Xu <like.xu@linux.intel.com> | 2020-05-29 15:43:47 +0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-06-10 12:10:47 -0400 |
| commit | ea39f9b643959d759b8643b4c11c4cbb3683d0ff (patch) | |
| tree | bda67282f3ebe87b29e742ca9c3acea7967ee13f /plugins | |
| parent | 20c8fa2ec74fe32a42008c177ed9c48031356705 (diff) | |
target/i386: define a new MSR based feature word - FEAT_PERF_CAPABILITIES
The Perfmon and Debug Capability MSR named IA32_PERF_CAPABILITIES is
a feature-enumerating MSR, which only enumerates the feature full-width
write (via bit 13) by now which indicates the processor supports IA32_A_PMCx
interface for updating bits 32 and above of IA32_PMCx.
The existence of MSR IA32_PERF_CAPABILITIES is enumerated by CPUID.1:ECX[15].
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: qemu-devel@nongnu.org
Signed-off-by: Like Xu <like.xu@linux.intel.com>
Message-Id: <20200529074347.124619-5-like.xu@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'plugins')
0 files changed, 0 insertions, 0 deletions