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qemu-e2k/target/ppc/machine.c
Nicholas Piggin cdab53dd22 target/ppc: Fix CPU reservation migration for record-replay 
ppc only migrates reserve_addr, so the destination machine can get a
valid reservation with an incorrect reservation value of 0. Prior to
commit 392d328abe ("target/ppc: Ensure stcx size matches larx"),
this could permit a stcx. to incorrectly succeed. That commit
inadvertently fixed that bug because the target machine starts with an
impossible reservation size of 0, so any stcx. will fail.

This behaviour is permitted by the ISA because reservation loss may
have implementation-dependent cause. What's more, with KVM machines it
is impossible save or reasonably restore reservation state. However if
the vmstate is being used for record-replay, the reservation must be
saved and restored exactly in order for execution from snapshot to
match the record.

This patch deprecates the existing incomplete reserve_addr vmstate,
and adds a new vmstate subsection with complete reservation state.
The new vmstate is needed only when record-replay mode is active.

Acked-by: Pavel Dovgalyuk <Pavel.Dovgalyuk@ispras.ru>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
2023-09-06 11:19:33 +02:00

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#include "qemu/osdep.h"
#include "cpu.h"
#include "exec/exec-all.h"
#include "sysemu/kvm.h"
#include "sysemu/tcg.h"
#include "helper_regs.h"
#include "mmu-hash64.h"
#include "migration/cpu.h"
#include "qapi/error.h"
#include "kvm_ppc.h"
#include "power8-pmu.h"
#include "sysemu/replay.h"
static void post_load_update_msr(CPUPPCState *env)
{
target_ulong msr = env->msr;
/*
* Invalidate all supported msr bits except MSR_TGPR/MSR_HVB
* before restoring. Note that this recomputes hflags.
*/
env->msr ^= env->msr_mask & ~((1ULL << MSR_TGPR) | MSR_HVB);
ppc_store_msr(env, msr);
}
static int get_avr(QEMUFile *f, void *pv, size_t size,
const VMStateField *field)
{
ppc_avr_t *v = pv;
v->u64[0] = qemu_get_be64(f);
v->u64[1] = qemu_get_be64(f);
return 0;
}
static int put_avr(QEMUFile *f, void *pv, size_t size,
const VMStateField *field, JSONWriter *vmdesc)
{
ppc_avr_t *v = pv;
qemu_put_be64(f, v->u64[0]);
qemu_put_be64(f, v->u64[1]);
return 0;
}
static const VMStateInfo vmstate_info_avr = {
.name = "avr",
.get = get_avr,
.put = put_avr,
};
#define VMSTATE_AVR_ARRAY_V(_f, _s, _n, _v) \
VMSTATE_SUB_ARRAY(_f, _s, 32, _n, _v, vmstate_info_avr, ppc_avr_t)
#define VMSTATE_AVR_ARRAY(_f, _s, _n) \
VMSTATE_AVR_ARRAY_V(_f, _s, _n, 0)
static int get_fpr(QEMUFile *f, void *pv, size_t size,
const VMStateField *field)
{
ppc_vsr_t *v = pv;
v->VsrD(0) = qemu_get_be64(f);
return 0;
}
static int put_fpr(QEMUFile *f, void *pv, size_t size,
const VMStateField *field, JSONWriter *vmdesc)
{
ppc_vsr_t *v = pv;
qemu_put_be64(f, v->VsrD(0));
return 0;
}
static const VMStateInfo vmstate_info_fpr = {
.name = "fpr",
.get = get_fpr,
.put = put_fpr,
};
#define VMSTATE_FPR_ARRAY_V(_f, _s, _n, _v) \
VMSTATE_SUB_ARRAY(_f, _s, 0, _n, _v, vmstate_info_fpr, ppc_vsr_t)
#define VMSTATE_FPR_ARRAY(_f, _s, _n) \
VMSTATE_FPR_ARRAY_V(_f, _s, _n, 0)
static int get_vsr(QEMUFile *f, void *pv, size_t size,
const VMStateField *field)
{
ppc_vsr_t *v = pv;
v->VsrD(1) = qemu_get_be64(f);
return 0;
}
static int put_vsr(QEMUFile *f, void *pv, size_t size,
const VMStateField *field, JSONWriter *vmdesc)
{
ppc_vsr_t *v = pv;
qemu_put_be64(f, v->VsrD(1));
return 0;
}
static const VMStateInfo vmstate_info_vsr = {
.name = "vsr",
.get = get_vsr,
.put = put_vsr,
};
#define VMSTATE_VSR_ARRAY_V(_f, _s, _n, _v) \
VMSTATE_SUB_ARRAY(_f, _s, 0, _n, _v, vmstate_info_vsr, ppc_vsr_t)
#define VMSTATE_VSR_ARRAY(_f, _s, _n) \
VMSTATE_VSR_ARRAY_V(_f, _s, _n, 0)
static bool cpu_pre_2_8_migration(void *opaque, int version_id)
{
PowerPCCPU *cpu = opaque;
return cpu->pre_2_8_migration;
}
#if defined(TARGET_PPC64)
static bool cpu_pre_3_0_migration(void *opaque, int version_id)
{
PowerPCCPU *cpu = opaque;
return cpu->pre_3_0_migration;
}
#endif
static int cpu_pre_save(void *opaque)
{
PowerPCCPU *cpu = opaque;
CPUPPCState *env = &cpu->env;
int i;
uint64_t insns_compat_mask =
PPC_INSNS_BASE | PPC_ISEL | PPC_STRING | PPC_MFTB
| PPC_FLOAT | PPC_FLOAT_FSEL | PPC_FLOAT_FRES
| PPC_FLOAT_FSQRT | PPC_FLOAT_FRSQRTE | PPC_FLOAT_FRSQRTES
| PPC_FLOAT_STFIWX | PPC_FLOAT_EXT
| PPC_CACHE | PPC_CACHE_ICBI | PPC_CACHE_DCBZ
| PPC_MEM_SYNC | PPC_MEM_EIEIO | PPC_MEM_TLBIE | PPC_MEM_TLBSYNC
| PPC_64B | PPC_64BX | PPC_ALTIVEC
| PPC_SEGMENT_64B | PPC_SLBI | PPC_POPCNTB | PPC_POPCNTWD;
uint64_t insns_compat_mask2 = PPC2_VSX | PPC2_VSX207 | PPC2_DFP | PPC2_DBRX
| PPC2_PERM_ISA206 | PPC2_DIVE_ISA206
| PPC2_ATOMIC_ISA206 | PPC2_FP_CVT_ISA206
| PPC2_FP_TST_ISA206 | PPC2_BCTAR_ISA207
| PPC2_LSQ_ISA207 | PPC2_ALTIVEC_207
| PPC2_ISA205 | PPC2_ISA207S | PPC2_FP_CVT_S64 | PPC2_TM
| PPC2_MEM_LWSYNC;
env->spr[SPR_LR] = env->lr;
env->spr[SPR_CTR] = env->ctr;
env->spr[SPR_XER] = cpu_read_xer(env);
#if defined(TARGET_PPC64)
env->spr[SPR_CFAR] = env->cfar;
#endif
env->spr[SPR_BOOKE_SPEFSCR] = env->spe_fscr;
for (i = 0; (i < 4) && (i < env->nb_BATs); i++) {
env->spr[SPR_DBAT0U + 2 * i] = env->DBAT[0][i];
env->spr[SPR_DBAT0U + 2 * i + 1] = env->DBAT[1][i];
env->spr[SPR_IBAT0U + 2 * i] = env->IBAT[0][i];
env->spr[SPR_IBAT0U + 2 * i + 1] = env->IBAT[1][i];
}
for (i = 0; (i < 4) && ((i + 4) < env->nb_BATs); i++) {
env->spr[SPR_DBAT4U + 2 * i] = env->DBAT[0][i + 4];
env->spr[SPR_DBAT4U + 2 * i + 1] = env->DBAT[1][i + 4];
env->spr[SPR_IBAT4U + 2 * i] = env->IBAT[0][i + 4];
env->spr[SPR_IBAT4U + 2 * i + 1] = env->IBAT[1][i + 4];
}
/* Hacks for migration compatibility between 2.6, 2.7 & 2.8 */
if (cpu->pre_2_8_migration) {
/*
* Mask out bits that got added to msr_mask since the versions
* which stupidly included it in the migration stream.
*/
target_ulong metamask = 0
#if defined(TARGET_PPC64)
| (1ULL << MSR_TS0)
| (1ULL << MSR_TS1)
#endif
;
cpu->mig_msr_mask = env->msr_mask & ~metamask;
cpu->mig_insns_flags = env->insns_flags & insns_compat_mask;
/*
* CPU models supported by old machines all have
* PPC_MEM_TLBIE, so we set it unconditionally to allow
* backward migration from a POWER9 host to a POWER8 host.
*/
cpu->mig_insns_flags |= PPC_MEM_TLBIE;
cpu->mig_insns_flags2 = env->insns_flags2 & insns_compat_mask2;
cpu->mig_nb_BATs = env->nb_BATs;
}
if (cpu->pre_3_0_migration) {
if (cpu->hash64_opts) {
cpu->mig_slb_nr = cpu->hash64_opts->slb_size;
}
}
/* Used to retain migration compatibility for pre 6.0 for 601 machines. */
env->hflags_compat_nmsr = 0;
if (tcg_enabled()) {
/*
* TCG does not maintain the DECR spr (unlike KVM) so have to save
* it here.
*/
env->spr[SPR_DECR] = cpu_ppc_load_decr(env);
}
return 0;
}
/*
* Determine if a given PVR is a "close enough" match to the CPU
* object. For TCG and KVM PR it would probably be sufficient to
* require an exact PVR match. However for KVM HV the user is
* restricted to a PVR exactly matching the host CPU. The correct way
* to handle this is to put the guest into an architected
* compatibility mode. However, to allow a more forgiving transition
* and migration from before this was widely done, we allow migration
* between sufficiently similar PVRs, as determined by the CPU class's
* pvr_match() hook.
*/
static bool pvr_match(PowerPCCPU *cpu, uint32_t pvr)
{
PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cpu);
if (pvr == pcc->pvr) {
return true;
}
return pcc->pvr_match(pcc, pvr, true);
}
static int cpu_post_load(void *opaque, int version_id)
{
PowerPCCPU *cpu = opaque;
CPUPPCState *env = &cpu->env;
int i;
/*
* If we're operating in compat mode, we should be ok as long as
* the destination supports the same compatibility mode.
*
* Otherwise, however, we require that the destination has exactly
* the same CPU model as the source.
*/
#if defined(TARGET_PPC64)
if (cpu->compat_pvr) {
uint32_t compat_pvr = cpu->compat_pvr;
Error *local_err = NULL;
int ret;
cpu->compat_pvr = 0;
ret = ppc_set_compat(cpu, compat_pvr, &local_err);
if (ret < 0) {
error_report_err(local_err);
return ret;
}
} else
#endif
{
if (!pvr_match(cpu, env->spr[SPR_PVR])) {
return -EINVAL;
}
}
/*
* If we're running with KVM HV, there is a chance that the guest
* is running with KVM HV and its kernel does not have the
* capability of dealing with a different PVR other than this
* exact host PVR in KVM_SET_SREGS. If that happens, the
* guest freezes after migration.
*
* The function kvmppc_pvr_workaround_required does this verification
* by first checking if the kernel has the cap, returning true immediately
* if that is the case. Otherwise, it checks if we're running in KVM PR.
* If the guest kernel does not have the cap and we're not running KVM-PR
* (so, it is running KVM-HV), we need to ensure that KVM_SET_SREGS will
* receive the PVR it expects as a workaround.
*
*/
if (kvmppc_pvr_workaround_required(cpu)) {
env->spr[SPR_PVR] = env->spr_cb[SPR_PVR].default_value;
}
env->lr = env->spr[SPR_LR];
env->ctr = env->spr[SPR_CTR];
cpu_write_xer(env, env->spr[SPR_XER]);
#if defined(TARGET_PPC64)
env->cfar = env->spr[SPR_CFAR];
#endif
env->spe_fscr = env->spr[SPR_BOOKE_SPEFSCR];
for (i = 0; (i < 4) && (i < env->nb_BATs); i++) {
env->DBAT[0][i] = env->spr[SPR_DBAT0U + 2 * i];
env->DBAT[1][i] = env->spr[SPR_DBAT0U + 2 * i + 1];
env->IBAT[0][i] = env->spr[SPR_IBAT0U + 2 * i];
env->IBAT[1][i] = env->spr[SPR_IBAT0U + 2 * i + 1];
}
for (i = 0; (i < 4) && ((i + 4) < env->nb_BATs); i++) {
env->DBAT[0][i + 4] = env->spr[SPR_DBAT4U + 2 * i];
env->DBAT[1][i + 4] = env->spr[SPR_DBAT4U + 2 * i + 1];
env->IBAT[0][i + 4] = env->spr[SPR_IBAT4U + 2 * i];
env->IBAT[1][i + 4] = env->spr[SPR_IBAT4U + 2 * i + 1];
}
if (!cpu->vhyp) {
ppc_store_sdr1(env, env->spr[SPR_SDR1]);
}
post_load_update_msr(env);
if (tcg_enabled()) {
/* Re-set breaks based on regs */
#if defined(TARGET_PPC64)
ppc_update_ciabr(env);
ppc_update_daw0(env);
#endif
/*
* TCG needs to re-start the decrementer timer and/or raise the
* interrupt. This works for level-triggered decrementer. Edge
* triggered types (including HDEC) would need to carry more state.
*/
cpu_ppc_store_decr(env, env->spr[SPR_DECR]);
pmu_mmcr01_updated(env);
}
return 0;
}
static bool fpu_needed(void *opaque)
{
PowerPCCPU *cpu = opaque;
return cpu->env.insns_flags & PPC_FLOAT;
}
static const VMStateDescription vmstate_fpu = {
.name = "cpu/fpu",
.version_id = 1,
.minimum_version_id = 1,
.needed = fpu_needed,
.fields = (VMStateField[]) {
VMSTATE_FPR_ARRAY(env.vsr, PowerPCCPU, 32),
VMSTATE_UINTTL(env.fpscr, PowerPCCPU),
VMSTATE_END_OF_LIST()
},
};
static bool altivec_needed(void *opaque)
{
PowerPCCPU *cpu = opaque;
return cpu->env.insns_flags & PPC_ALTIVEC;
}
static int get_vscr(QEMUFile *f, void *opaque, size_t size,
const VMStateField *field)
{
PowerPCCPU *cpu = opaque;
ppc_store_vscr(&cpu->env, qemu_get_be32(f));
return 0;
}
static int put_vscr(QEMUFile *f, void *opaque, size_t size,
const VMStateField *field, JSONWriter *vmdesc)
{
PowerPCCPU *cpu = opaque;
qemu_put_be32(f, ppc_get_vscr(&cpu->env));
return 0;
}
static const VMStateInfo vmstate_vscr = {
.name = "cpu/altivec/vscr",
.get = get_vscr,
.put = put_vscr,
};
static const VMStateDescription vmstate_altivec = {
.name = "cpu/altivec",
.version_id = 1,
.minimum_version_id = 1,
.needed = altivec_needed,
.fields = (VMStateField[]) {
VMSTATE_AVR_ARRAY(env.vsr, PowerPCCPU, 32),
/*
* Save the architecture value of the vscr, not the internally
* expanded version. Since this architecture value does not
* exist in memory to be stored, this requires a but of hoop
* jumping. We want OFFSET=0 so that we effectively pass CPU
* to the helper functions.
*/
{
.name = "vscr",
.version_id = 0,
.size = sizeof(uint32_t),
.info = &vmstate_vscr,
.flags = VMS_SINGLE,
.offset = 0
},
VMSTATE_END_OF_LIST()
},
};
static bool vsx_needed(void *opaque)
{
PowerPCCPU *cpu = opaque;
return cpu->env.insns_flags2 & PPC2_VSX;
}
static const VMStateDescription vmstate_vsx = {
.name = "cpu/vsx",
.version_id = 1,
.minimum_version_id = 1,
.needed = vsx_needed,
.fields = (VMStateField[]) {
VMSTATE_VSR_ARRAY(env.vsr, PowerPCCPU, 32),
VMSTATE_END_OF_LIST()
},
};
#ifdef TARGET_PPC64
/* Transactional memory state */
static bool tm_needed(void *opaque)
{
PowerPCCPU *cpu = opaque;
CPUPPCState *env = &cpu->env;
return FIELD_EX64(env->msr, MSR, TS);
}
static const VMStateDescription vmstate_tm = {
.name = "cpu/tm",
.version_id = 1,
.minimum_version_id = 1,
.needed = tm_needed,
.fields = (VMStateField []) {
VMSTATE_UINTTL_ARRAY(env.tm_gpr, PowerPCCPU, 32),
VMSTATE_AVR_ARRAY(env.tm_vsr, PowerPCCPU, 64),
VMSTATE_UINT64(env.tm_cr, PowerPCCPU),
VMSTATE_UINT64(env.tm_lr, PowerPCCPU),
VMSTATE_UINT64(env.tm_ctr, PowerPCCPU),
VMSTATE_UINT64(env.tm_fpscr, PowerPCCPU),
VMSTATE_UINT64(env.tm_amr, PowerPCCPU),
VMSTATE_UINT64(env.tm_ppr, PowerPCCPU),
VMSTATE_UINT64(env.tm_vrsave, PowerPCCPU),
VMSTATE_UINT32(env.tm_vscr, PowerPCCPU),
VMSTATE_UINT64(env.tm_dscr, PowerPCCPU),
VMSTATE_UINT64(env.tm_tar, PowerPCCPU),
VMSTATE_END_OF_LIST()
},
};
#endif
static bool sr_needed(void *opaque)
{
#ifdef TARGET_PPC64
PowerPCCPU *cpu = opaque;
return !mmu_is_64bit(cpu->env.mmu_model);
#else
return true;
#endif
}
static const VMStateDescription vmstate_sr = {
.name = "cpu/sr",
.version_id = 1,
.minimum_version_id = 1,
.needed = sr_needed,
.fields = (VMStateField[]) {
VMSTATE_UINTTL_ARRAY(env.sr, PowerPCCPU, 32),
VMSTATE_END_OF_LIST()
},
};
#ifdef TARGET_PPC64
static int get_slbe(QEMUFile *f, void *pv, size_t size,
const VMStateField *field)
{
ppc_slb_t *v = pv;
v->esid = qemu_get_be64(f);
v->vsid = qemu_get_be64(f);
return 0;
}
static int put_slbe(QEMUFile *f, void *pv, size_t size,
const VMStateField *field, JSONWriter *vmdesc)
{
ppc_slb_t *v = pv;
qemu_put_be64(f, v->esid);
qemu_put_be64(f, v->vsid);
return 0;
}
static const VMStateInfo vmstate_info_slbe = {
.name = "slbe",
.get = get_slbe,
.put = put_slbe,
};
#define VMSTATE_SLB_ARRAY_V(_f, _s, _n, _v) \
VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_slbe, ppc_slb_t)
#define VMSTATE_SLB_ARRAY(_f, _s, _n) \
VMSTATE_SLB_ARRAY_V(_f, _s, _n, 0)
static bool slb_needed(void *opaque)
{
PowerPCCPU *cpu = opaque;
/* We don't support any of the old segment table based 64-bit CPUs */
return mmu_is_64bit(cpu->env.mmu_model);
}
static int slb_post_load(void *opaque, int version_id)
{
PowerPCCPU *cpu = opaque;
CPUPPCState *env = &cpu->env;
int i;
/*
* We've pulled in the raw esid and vsid values from the migration
* stream, but we need to recompute the page size pointers
*/
for (i = 0; i < cpu->hash64_opts->slb_size; i++) {
if (ppc_store_slb(cpu, i, env->slb[i].esid, env->slb[i].vsid) < 0) {
/* Migration source had bad values in its SLB */
return -1;
}
}
return 0;
}
static const VMStateDescription vmstate_slb = {
.name = "cpu/slb",
.version_id = 1,
.minimum_version_id = 1,
.needed = slb_needed,
.post_load = slb_post_load,
.fields = (VMStateField[]) {
VMSTATE_INT32_TEST(mig_slb_nr, PowerPCCPU, cpu_pre_3_0_migration),
VMSTATE_SLB_ARRAY(env.slb, PowerPCCPU, MAX_SLB_ENTRIES),
VMSTATE_END_OF_LIST()
}
};
#endif /* TARGET_PPC64 */
static const VMStateDescription vmstate_tlb6xx_entry = {
.name = "cpu/tlb6xx_entry",
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_UINTTL(pte0, ppc6xx_tlb_t),
VMSTATE_UINTTL(pte1, ppc6xx_tlb_t),
VMSTATE_UINTTL(EPN, ppc6xx_tlb_t),
VMSTATE_END_OF_LIST()
},
};
static bool tlb6xx_needed(void *opaque)
{
PowerPCCPU *cpu = opaque;
CPUPPCState *env = &cpu->env;
return env->nb_tlb && (env->tlb_type == TLB_6XX);
}
static const VMStateDescription vmstate_tlb6xx = {
.name = "cpu/tlb6xx",
.version_id = 1,
.minimum_version_id = 1,
.needed = tlb6xx_needed,
.fields = (VMStateField[]) {
VMSTATE_INT32_EQUAL(env.nb_tlb, PowerPCCPU, NULL),
VMSTATE_STRUCT_VARRAY_POINTER_INT32(env.tlb.tlb6, PowerPCCPU,
env.nb_tlb,
vmstate_tlb6xx_entry,
ppc6xx_tlb_t),
VMSTATE_UINTTL_ARRAY(env.tgpr, PowerPCCPU, 4),
VMSTATE_END_OF_LIST()
}
};
static const VMStateDescription vmstate_tlbemb_entry = {
.name = "cpu/tlbemb_entry",
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_UINT64(RPN, ppcemb_tlb_t),
VMSTATE_UINTTL(EPN, ppcemb_tlb_t),
VMSTATE_UINTTL(PID, ppcemb_tlb_t),
VMSTATE_UINTTL(size, ppcemb_tlb_t),
VMSTATE_UINT32(prot, ppcemb_tlb_t),
VMSTATE_UINT32(attr, ppcemb_tlb_t),
VMSTATE_END_OF_LIST()
},
};
static bool tlbemb_needed(void *opaque)
{
PowerPCCPU *cpu = opaque;
CPUPPCState *env = &cpu->env;
return env->nb_tlb && (env->tlb_type == TLB_EMB);
}
static const VMStateDescription vmstate_tlbemb = {
.name = "cpu/tlb6xx",
.version_id = 1,
.minimum_version_id = 1,
.needed = tlbemb_needed,
.fields = (VMStateField[]) {
VMSTATE_INT32_EQUAL(env.nb_tlb, PowerPCCPU, NULL),
VMSTATE_STRUCT_VARRAY_POINTER_INT32(env.tlb.tlbe, PowerPCCPU,
env.nb_tlb,
vmstate_tlbemb_entry,
ppcemb_tlb_t),
VMSTATE_END_OF_LIST()
},
};
static const VMStateDescription vmstate_tlbmas_entry = {
.name = "cpu/tlbmas_entry",
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_UINT32(mas8, ppcmas_tlb_t),
VMSTATE_UINT32(mas1, ppcmas_tlb_t),
VMSTATE_UINT64(mas2, ppcmas_tlb_t),
VMSTATE_UINT64(mas7_3, ppcmas_tlb_t),
VMSTATE_END_OF_LIST()
},
};
static bool tlbmas_needed(void *opaque)
{
PowerPCCPU *cpu = opaque;
CPUPPCState *env = &cpu->env;
return env->nb_tlb && (env->tlb_type == TLB_MAS);
}
static const VMStateDescription vmstate_tlbmas = {
.name = "cpu/tlbmas",
.version_id = 1,
.minimum_version_id = 1,
.needed = tlbmas_needed,
.fields = (VMStateField[]) {
VMSTATE_INT32_EQUAL(env.nb_tlb, PowerPCCPU, NULL),
VMSTATE_STRUCT_VARRAY_POINTER_INT32(env.tlb.tlbm, PowerPCCPU,
env.nb_tlb,
vmstate_tlbmas_entry,
ppcmas_tlb_t),
VMSTATE_END_OF_LIST()
}
};
static bool compat_needed(void *opaque)
{
PowerPCCPU *cpu = opaque;
assert(!(cpu->compat_pvr && !cpu->vhyp));
return !cpu->pre_2_10_migration && cpu->compat_pvr != 0;
}
static const VMStateDescription vmstate_compat = {
.name = "cpu/compat",
.version_id = 1,
.minimum_version_id = 1,
.needed = compat_needed,
.fields = (VMStateField[]) {
VMSTATE_UINT32(compat_pvr, PowerPCCPU),
VMSTATE_END_OF_LIST()
}
};
static bool reservation_needed(void *opaque)
{
return (replay_mode != REPLAY_MODE_NONE);
}
static const VMStateDescription vmstate_reservation = {
.name = "cpu/reservation",
.version_id = 1,
.minimum_version_id = 1,
.needed = reservation_needed,
.fields = (VMStateField[]) {
VMSTATE_UINTTL(env.reserve_addr, PowerPCCPU),
VMSTATE_UINTTL(env.reserve_length, PowerPCCPU),
VMSTATE_UINTTL(env.reserve_val, PowerPCCPU),
#if defined(TARGET_PPC64)
VMSTATE_UINTTL(env.reserve_val2, PowerPCCPU),
#endif
VMSTATE_END_OF_LIST()
}
};
const VMStateDescription vmstate_ppc_cpu = {
.name = "cpu",
.version_id = 5,
.minimum_version_id = 5,
.pre_save = cpu_pre_save,
.post_load = cpu_post_load,
.fields = (VMStateField[]) {
VMSTATE_UNUSED(sizeof(target_ulong)), /* was _EQUAL(env.spr[SPR_PVR]) */
/* User mode architected state */
VMSTATE_UINTTL_ARRAY(env.gpr, PowerPCCPU, 32),
#if !defined(TARGET_PPC64)
VMSTATE_UINTTL_ARRAY(env.gprh, PowerPCCPU, 32),
#endif
VMSTATE_UINT32_ARRAY(env.crf, PowerPCCPU, 8),
VMSTATE_UINTTL(env.nip, PowerPCCPU),
/* SPRs */
VMSTATE_UINTTL_ARRAY(env.spr, PowerPCCPU, 1024),
VMSTATE_UINT64(env.spe_acc, PowerPCCPU),
VMSTATE_UNUSED(sizeof(target_ulong)), /* was env.reserve_addr */
/* Supervisor mode architected state */
VMSTATE_UINTTL(env.msr, PowerPCCPU),
/* Backward compatible internal state */
VMSTATE_UINTTL(env.hflags_compat_nmsr, PowerPCCPU),
/* Sanity checking */
VMSTATE_UINTTL_TEST(mig_msr_mask, PowerPCCPU, cpu_pre_2_8_migration),
VMSTATE_UINT64_TEST(mig_insns_flags, PowerPCCPU, cpu_pre_2_8_migration),
VMSTATE_UINT64_TEST(mig_insns_flags2, PowerPCCPU,
cpu_pre_2_8_migration),
VMSTATE_UINT32_TEST(mig_nb_BATs, PowerPCCPU, cpu_pre_2_8_migration),
VMSTATE_END_OF_LIST()
},
.subsections = (const VMStateDescription*[]) {
&vmstate_fpu,
&vmstate_altivec,
&vmstate_vsx,
&vmstate_sr,
#ifdef TARGET_PPC64
&vmstate_tm,
&vmstate_slb,
#endif /* TARGET_PPC64 */
&vmstate_tlb6xx,
&vmstate_tlbemb,
&vmstate_tlbmas,
&vmstate_compat,
&vmstate_reservation,
NULL
}
};
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