This enabled KVM and migration support for a number of POWER8 registers:
* Program Prioirty Register (PPR)
* Sampled Instruction Address Register (SIAR)
* Sampled Data Address Register (SDAR)
* Vector Registers Save Register (VRSAVE)
This enables save/restore of transactional state if MSR_TS is set
in the MSR.
This adds new POWER8 registers support required for migration.
Signed-off-by: Alexey Kardashevskiy <a...@ozlabs.ru>
---
target-ppc/cpu.h | 18 ++++++++++++++++++
target-ppc/kvm.c | 38 ++++++++++++++++++++++++++++++++++++++
target-ppc/machine.c | 34 ++++++++++++++++++++++++++++++++++
target-ppc/translate_init.c | 24 ++++++++++++++++--------
4 files changed, 106 insertions(+), 8 deletions(-)
diff --git a/target-ppc/cpu.h b/target-ppc/cpu.h
index 2719c08..2b476b4 100644
--- a/target-ppc/cpu.h
+++ b/target-ppc/cpu.h
@@ -426,6 +426,8 @@ struct ppc_slb_t {
#define MSR_TAG 62 /* Tag-active mode (POWERx ?) */
#define MSR_ISF 61 /* Sixty-four-bit interrupt mode on 630 */
#define MSR_SHV 60 /* hypervisor state hflags */
+#define MSR_TS 33 /* Transactional state, 2 bits (Book3s) */
+#define MSR_TM 32 /* Transactional Memory Available (Book3s) */
#define MSR_CM 31 /* Computation mode for BookE hflags */
#define MSR_ICM 30 /* Interrupt computation mode for BookE */
#define MSR_THV 29 /* hypervisor state for 32 bits PowerPC hflags */
@@ -1081,6 +1083,20 @@ struct CPUPPCState {
*/
uint8_t fit_period[4];
uint8_t wdt_period[4];
+
+ /* Transactional memory state migration */
+ target_ulong tm_gpr[32];
+ ppc_avr_t tm_vsr[64];
+ uint64_t tm_cr;
+ uint64_t tm_lr;
+ uint64_t tm_ctr;
+ uint64_t tm_fpscr;
+ uint64_t tm_amr;
+ uint64_t tm_ppr;
+ uint64_t tm_vrsave;
+ uint32_t tm_vscr;
+ uint64_t tm_dscr;
+ uint64_t tm_tar;
};
#define SET_FIT_PERIOD(a_, b_, c_, d_) \
@@ -1479,6 +1495,8 @@ static inline int cpu_mmu_index (CPUPPCState *env)
#define SPR_MPC_MD_EPN (0x30B)
#define SPR_PERFC (0x30C)
#define SPR_MPC_MD_TWB (0x30C)
+#define SPR_BOOK3S_SIAR (0x30C)
+#define SPR_BOOK3S_SDAR (0x30D)
#define SPR_PERFD (0x30D)
#define SPR_MPC_MD_TWC (0x30D)
#define SPR_PERFE (0x30E)
diff --git a/target-ppc/kvm.c b/target-ppc/kvm.c
index 9974b10..ead69fa 100644
--- a/target-ppc/kvm.c
+++ b/target-ppc/kvm.c
@@ -866,6 +866,25 @@ int kvm_arch_put_registers(CPUState *cs, int level)
}
#ifdef TARGET_PPC64
+ if ((cpu->env.msr >> MSR_TS) & 3) {
+ for (i = 0; i < sizeof(env->tm_gpr)/sizeof(env->tm_gpr[0]); i++) {
+ kvm_set_one_reg(cs, KVM_REG_PPC_TM_GPR(i), &env->tm_gpr[i]);
+ }
+ for (i = 0; i < sizeof(env->tm_vsr)/sizeof(env->tm_vsr[0]); i++) {
+ kvm_set_one_reg(cs, KVM_REG_PPC_TM_VSR(i), &env->tm_vsr[i]);
+ }
+ kvm_set_one_reg(cs, KVM_REG_PPC_TM_CR, &env->tm_cr);
+ kvm_set_one_reg(cs, KVM_REG_PPC_TM_LR, &env->tm_lr);
+ kvm_set_one_reg(cs, KVM_REG_PPC_TM_CTR, &env->tm_ctr);
+ kvm_set_one_reg(cs, KVM_REG_PPC_TM_FPSCR, &env->tm_fpscr);
+ kvm_set_one_reg(cs, KVM_REG_PPC_TM_AMR, &env->tm_amr);
+ kvm_set_one_reg(cs, KVM_REG_PPC_TM_PPR, &env->tm_ppr);
+ kvm_set_one_reg(cs, KVM_REG_PPC_TM_VRSAVE, &env->tm_vrsave);
+ kvm_set_one_reg(cs, KVM_REG_PPC_TM_VSCR, &env->tm_vscr);
+ kvm_set_one_reg(cs, KVM_REG_PPC_TM_DSCR, &env->tm_dscr);
+ kvm_set_one_reg(cs, KVM_REG_PPC_TM_TAR, &env->tm_tar);
+ }
+
if (cap_papr) {
if (kvm_put_vpa(cs) < 0) {
DPRINTF("Warning: Unable to set VPA information to KVM\n");
@@ -1090,6 +1109,25 @@ int kvm_arch_get_registers(CPUState *cs)
}
#ifdef TARGET_PPC64
+ if ((cpu->env.msr >> MSR_TS) & 3) {
+ for (i = 0; i < sizeof(env->tm_gpr)/sizeof(env->tm_gpr[0]); i++) {
+ kvm_get_one_reg(cs, KVM_REG_PPC_TM_GPR(i), &env->tm_gpr[i]);
+ }
+ for (i = 0; i < sizeof(env->tm_vsr)/sizeof(env->tm_vsr[0]); i++) {
+ kvm_get_one_reg(cs, KVM_REG_PPC_TM_VSR(i), &env->tm_vsr[i]);
+ }
+ kvm_get_one_reg(cs, KVM_REG_PPC_TM_CR, &env->tm_cr);
+ kvm_get_one_reg(cs, KVM_REG_PPC_TM_LR, &env->tm_lr);
+ kvm_get_one_reg(cs, KVM_REG_PPC_TM_CTR, &env->tm_ctr);
+ kvm_get_one_reg(cs, KVM_REG_PPC_TM_FPSCR, &env->tm_fpscr);
+ kvm_get_one_reg(cs, KVM_REG_PPC_TM_AMR, &env->tm_amr);
+ kvm_get_one_reg(cs, KVM_REG_PPC_TM_PPR, &env->tm_ppr);
+ kvm_get_one_reg(cs, KVM_REG_PPC_TM_VRSAVE, &env->tm_vrsave);
+ kvm_get_one_reg(cs, KVM_REG_PPC_TM_VSCR, &env->tm_vscr);
+ kvm_get_one_reg(cs, KVM_REG_PPC_TM_DSCR, &env->tm_dscr);
+ kvm_get_one_reg(cs, KVM_REG_PPC_TM_TAR, &env->tm_tar);
+ }
+
if (cap_papr) {
if (kvm_get_vpa(cs) < 0) {
DPRINTF("Warning: Unable to get VPA information from KVM\n");
diff --git a/target-ppc/machine.c b/target-ppc/machine.c
index 063b379..691071d 100644
--- a/target-ppc/machine.c
+++ b/target-ppc/machine.c
@@ -247,6 +247,37 @@ static const VMStateDescription vmstate_vsx = {
},
};
+#ifdef TARGET_PPC64
+/* Transactional memory state */
+static bool tm_needed(void *opaque)
+{
+ PowerPCCPU *cpu = opaque;
+ return (cpu->env.msr >> MSR_TS) & 3;
+}
+
+static const VMStateDescription vmstate_tm = {
+ .name = "cpu/tm",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .minimum_version_id_old = 1,
+ .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
@@ -518,6 +549,9 @@ const VMStateDescription vmstate_ppc_cpu = {
.needed = sr_needed,
} , {
#ifdef TARGET_PPC64
+ .vmsd = &vmstate_tm,
+ .needed = tm_needed,
+ } , {
.vmsd = &vmstate_slb,
.needed = slb_needed,
} , {
diff --git a/target-ppc/translate_init.c b/target-ppc/translate_init.c
index 1627bb0..4b20c29 100644
--- a/target-ppc/translate_init.c
+++ b/target-ppc/translate_init.c
@@ -7025,14 +7025,22 @@ static void init_proc_POWER7 (CPUPPCState *env)
SPR_NOACCESS, SPR_NOACCESS,
&spr_read_generic, SPR_NOACCESS,
0x80800000);
- spr_register(env, SPR_VRSAVE, "SPR_VRSAVE",
- &spr_read_generic, &spr_write_generic,
- &spr_read_generic, &spr_write_generic,
- 0x00000000);
- spr_register(env, SPR_PPR, "PPR",
- &spr_read_generic, &spr_write_generic,
- &spr_read_generic, &spr_write_generic,
- 0x00000000);
+ spr_register_kvm(env, SPR_VRSAVE, "VRSAVE",
+ &spr_read_generic, &spr_write_generic,
+ &spr_read_generic, &spr_write_generic,
+ KVM_REG_PPC_VRSAVE, 0x00000000);
+ spr_register_kvm(env, SPR_PPR, "PPR",
+ &spr_read_generic, &spr_write_generic,
+ &spr_read_generic, &spr_write_generic,
+ KVM_REG_PPC_PPR, 0x00000000);
+ spr_register_kvm(env, SPR_BOOK3S_SIAR, "SIAR",
+ &spr_read_generic, &spr_write_generic,
+ &spr_read_generic, &spr_write_generic,
+ KVM_REG_PPC_SIAR, 0x00000000);
+ spr_register_kvm(env, SPR_BOOK3S_SDAR, "SDAR",
+ &spr_read_generic, &spr_write_generic,
+ &spr_read_generic, &spr_write_generic,
+ KVM_REG_PPC_SDAR, 0x00000000);
/* Logical partitionning */
spr_register_kvm(env, SPR_LPCR, "LPCR",
SPR_NOACCESS, SPR_NOACCESS,
--
1.8.4.rc4
