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target/i386: Enable Arch LBR migration states in vmstate 

The Arch LBR record MSRs and control MSRs will be migrated
to destination guest if the vcpus were running with Arch
LBR active.

Signed-off-by: Yang Weijiang <weijiang.yang@intel.com>
Message-Id: <20220215195258.29149-8-weijiang.yang@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Yang Weijiang 2022-02-15 14:52:57 -05:00 committed by Paolo Bonzini
parent 12703d4e75
commit f2e7c2fc89
1 changed files with 38 additions and 0 deletions
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38
target/i386/machine.c
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@ -136,6 +136,22 @@ static const VMStateDescription vmstate_mtrr_var = {
#define VMSTATE_MTRR_VARS(_field, _state, _n, _v) \
VMSTATE_STRUCT_ARRAY(_field, _state, _n, _v, vmstate_mtrr_var, MTRRVar)
static const VMStateDescription vmstate_lbr_records_var = {
.name = "lbr_records_var",
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_UINT64(from, LBREntry),
VMSTATE_UINT64(to, LBREntry),
VMSTATE_UINT64(info, LBREntry),
VMSTATE_END_OF_LIST()
}
};
#define VMSTATE_LBR_VARS(_field, _state, _n, _v) \
VMSTATE_STRUCT_ARRAY(_field, _state, _n, _v, vmstate_lbr_records_var, \
LBREntry)
typedef struct x86_FPReg_tmp {
FPReg *parent;
uint64_t tmp_mant;
@ -1525,6 +1541,27 @@ static const VMStateDescription vmstate_amx_xtile = {
};
#endif
static bool arch_lbr_needed(void *opaque)
{
X86CPU *cpu = opaque;
CPUX86State *env = &cpu->env;
return !!(env->features[FEAT_7_0_EDX] & CPUID_7_0_EDX_ARCH_LBR);
}
static const VMStateDescription vmstate_arch_lbr = {
.name = "cpu/arch_lbr",
.version_id = 1,
.minimum_version_id = 1,
.needed = arch_lbr_needed,
.fields = (VMStateField[]) {
VMSTATE_UINT64(env.msr_lbr_ctl, X86CPU),
VMSTATE_UINT64(env.msr_lbr_depth, X86CPU),
VMSTATE_LBR_VARS(env.lbr_records, X86CPU, ARCH_LBR_NR_ENTRIES, 1),
VMSTATE_END_OF_LIST()
}
};
const VMStateDescription vmstate_x86_cpu = {
.name = "cpu",
.version_id = 12,
@ -1668,6 +1705,7 @@ const VMStateDescription vmstate_x86_cpu = {
#ifdef TARGET_X86_64
&vmstate_amx_xtile,
#endif
&vmstate_arch_lbr,
NULL
}
};