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target/ppc: Add migration support for BHRB 

Adds migration support for Branch History Rolling
Buffer (BHRB) internal state.

Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Glenn Miles <milesg@linux.vnet.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
This commit is contained in:
Glenn Miles 2024-03-28 20:41:37 +10:00 committed by Nicholas Piggin
parent 6bfcf1dc23
commit dabd6d3c3a
1 changed files with 21 additions and 0 deletions
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21
target/ppc/machine.c
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@ -711,6 +711,26 @@ static const VMStateDescription vmstate_reservation = {
}
};
#ifdef TARGET_PPC64
static bool bhrb_needed(void *opaque)
{
PowerPCCPU *cpu = opaque;
return (cpu->env.flags & POWERPC_FLAG_BHRB) != 0;
}
static const VMStateDescription vmstate_bhrb = {
.name = "cpu/bhrb",
.version_id = 1,
.minimum_version_id = 1,
.needed = bhrb_needed,
.fields = (VMStateField[]) {
VMSTATE_UINTTL(env.bhrb_offset, PowerPCCPU),
VMSTATE_UINT64_ARRAY(env.bhrb, PowerPCCPU, BHRB_MAX_NUM_ENTRIES),
VMSTATE_END_OF_LIST()
}
};
#endif
const VMStateDescription vmstate_ppc_cpu = {
.name = "cpu",
.version_id = 5,
@ -756,6 +776,7 @@ const VMStateDescription vmstate_ppc_cpu = {
#ifdef TARGET_PPC64
&vmstate_tm,
&vmstate_slb,
&vmstate_bhrb,
#endif /* TARGET_PPC64 */
&vmstate_tlb6xx,
&vmstate_tlbemb,