From: Stefan Berger <stef...@linux.vnet.ibm.com> We need to synchronize with the backend thread to make sure that a command being processed by the external TPM emulator has completed and its response been received. In case the bottom half did not run, we run the function it is supposed to run.
Signed-off-by: Stefan Berger <stef...@linux.vnet.ibm.com> [ Marc-André - drop memory_region_get_ram_ptr(cmdmem) copy as it should be migrated already ] Signed-off-by: Marc-André Lureau <marcandre.lur...@redhat.com> --- hw/tpm/tpm_crb.c | 32 +++++++++++++++++++++++++++++++- 1 file changed, 31 insertions(+), 1 deletion(-) diff --git a/hw/tpm/tpm_crb.c b/hw/tpm/tpm_crb.c index 908ca18d92..63d53384c5 100644 --- a/hw/tpm/tpm_crb.c +++ b/hw/tpm/tpm_crb.c @@ -257,9 +257,39 @@ static enum TPMVersion tpm_crb_get_version(TPMIf *ti) return tpm_backend_get_tpm_version(s->tpmbe); } +/* persistent state handling */ + +static int tpm_crb_pre_save(void *opaque) +{ + CRBState *s = opaque; + + tpm_backend_finish_sync(s->tpmbe); + + return 0; +} + static const VMStateDescription vmstate_tpm_crb = { .name = "tpm-crb", - .unmigratable = 1, + .pre_save = tpm_crb_pre_save, + .fields = (VMStateField[]) { + VMSTATE_UINT32(regs.loc_state.reg, CRBState), + VMSTATE_UINT32(regs.loc_ctrl, CRBState), + VMSTATE_UINT32(regs.loc_sts.reg, CRBState), + VMSTATE_UINT64(regs.intf_id.reg, CRBState), + VMSTATE_UINT64(regs.ctrl_ext, CRBState), + VMSTATE_UINT32(regs.ctrl_req, CRBState), + VMSTATE_UINT32(regs.ctrl_sts.reg, CRBState), + VMSTATE_UINT32(regs.ctrl_cancel, CRBState), + VMSTATE_UINT32(regs.ctrl_start, CRBState), + VMSTATE_UINT32(regs.ctrl_int_enable, CRBState), + VMSTATE_UINT32(regs.ctrl_int_sts, CRBState), + VMSTATE_UINT32(regs.ctrl_cmd_size, CRBState), + VMSTATE_UINT32(regs.ctrl_cmd_pa_low, CRBState), + VMSTATE_UINT32(regs.ctrl_rsp_size, CRBState), + VMSTATE_UINT64(regs.ctrl_rsp_pa, CRBState), + + VMSTATE_END_OF_LIST(), + } }; static Property tpm_crb_properties[] = { -- 2.16.0.rc1.1.gef27df75a1