diff options
| author | Chao Peng <chao.p.peng@linux.intel.com> | 2018-03-05 00:48:36 +0800 |
|---|---|---|
| committer | Eduardo Habkost <ehabkost@redhat.com> | 2018-03-12 15:59:46 -0300 |
| commit | b77146e9a129bcdb60edc23639211679ae846a92 (patch) | |
| tree | 288c25fe6c32edb0bf7d4de1a71293c8e07189ba /target/i386/machine.c | |
| parent | e37a5c7fa459558b5020588994707fe3fdd6616e (diff) | |
i386: Add support to get/set/migrate Intel Processor Trace feature
Add Intel Processor Trace related definition. It also add
corresponding part to kvm_get/set_msr and vmstate.
Signed-off-by: Chao Peng <chao.p.peng@linux.intel.com>
Signed-off-by: Luwei Kang <luwei.kang@intel.com>
Message-Id: <1520182116-16485-2-git-send-email-luwei.kang@intel.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Diffstat (limited to 'target/i386/machine.c')
| -rw-r--r-- | target/i386/machine.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/target/i386/machine.c b/target/i386/machine.c index 361c05aedf..c05fe6fb1a 100644 --- a/target/i386/machine.c +++ b/target/i386/machine.c @@ -837,6 +837,43 @@ static const VMStateDescription vmstate_spec_ctrl = { } }; +static bool intel_pt_enable_needed(void *opaque) +{ + X86CPU *cpu = opaque; + CPUX86State *env = &cpu->env; + int i; + + if (env->msr_rtit_ctrl || env->msr_rtit_status || + env->msr_rtit_output_base || env->msr_rtit_output_mask || + env->msr_rtit_cr3_match) { + return true; + } + + for (i = 0; i < MAX_RTIT_ADDRS; i++) { + if (env->msr_rtit_addrs[i]) { + return true; + } + } + + return false; +} + +static const VMStateDescription vmstate_msr_intel_pt = { + .name = "cpu/intel_pt", + .version_id = 1, + .minimum_version_id = 1, + .needed = intel_pt_enable_needed, + .fields = (VMStateField[]) { + VMSTATE_UINT64(env.msr_rtit_ctrl, X86CPU), + VMSTATE_UINT64(env.msr_rtit_status, X86CPU), + VMSTATE_UINT64(env.msr_rtit_output_base, X86CPU), + VMSTATE_UINT64(env.msr_rtit_output_mask, X86CPU), + VMSTATE_UINT64(env.msr_rtit_cr3_match, X86CPU), + VMSTATE_UINT64_ARRAY(env.msr_rtit_addrs, X86CPU, MAX_RTIT_ADDRS), + VMSTATE_END_OF_LIST() + } +}; + VMStateDescription vmstate_x86_cpu = { .name = "cpu", .version_id = 12, @@ -957,6 +994,7 @@ VMStateDescription vmstate_x86_cpu = { #endif &vmstate_spec_ctrl, &vmstate_mcg_ext_ctl, + &vmstate_msr_intel_pt, NULL } }; |