On Thu, Mar 12, 2020 at 06:54:26PM +0200, Liran Alon wrote:
> Similar to CMD_GETTIME but lacks the 136-year overflow issue,
> by returning full 64-bit of host uSeconds.
>
> Reviewed-by: Nikita Leshenko <nikita.leshche...@oracle.com>
> Signed-off-by: Liran Alon <liran.a...@oracle.com>
> ---
> hw/i386/vmport.c | 17 +++++++++++++++++
> include/hw/i386/vmport.h | 1 +
> 2 files changed, 18 insertions(+)
>
> diff --git a/hw/i386/vmport.c b/hw/i386/vmport.c
> index c5b659c59343..7e57eda4b526 100644
> --- a/hw/i386/vmport.c
> +++ b/hw/i386/vmport.c
> @@ -183,6 +183,22 @@ static uint32_t vmport_cmd_time(void *opaque, uint32_t
> addr)
> return (uint32_t)tv.tv_sec;
> }
>
> +static uint32_t vmport_cmd_time_full(void *opaque, uint32_t addr)
> +{
> + X86CPU *cpu = X86_CPU(current_cpu);
> + qemu_timeval tv;
> +
> + if (qemu_gettimeofday(&tv) < 0) {
> + return UINT32_MAX;
> + }
> +
> + cpu->env.regs[R_ESI] = (uint32_t)((uint64_t)tv.tv_sec >> 32);
> + cpu->env.regs[R_EDX] = (uint32_t)tv.tv_sec;
> + cpu->env.regs[R_EBX] = (uint32_t)tv.tv_usec;
> + cpu->env.regs[R_ECX] = port_state->max_time_lag_us;
> + return VMPORT_MAGIC;
> +}
> +
> /* vmmouse helpers */
> void vmmouse_get_data(uint32_t *data)
> {
And with usec precision, same comments apply in an even stronger way.
> @@ -230,6 +246,7 @@ static void vmport_realizefn(DeviceState *dev, Error
> **errp)
> if (s->compat_flags & VMPORT_COMPAT_CMDS_V2) {
> vmport_register(VMPORT_CMD_GETBIOSUUID, vmport_cmd_get_bios_uuid,
> NULL);
> vmport_register(VMPORT_CMD_GETTIME, vmport_cmd_time, NULL);
> + vmport_register(VMPORT_CMD_GETTIMEFULL, vmport_cmd_time_full, NULL);
> }
> }
>
> diff --git a/include/hw/i386/vmport.h b/include/hw/i386/vmport.h
> index 50416c8c8f3e..5d19963ed417 100644
> --- a/include/hw/i386/vmport.h
> +++ b/include/hw/i386/vmport.h
> @@ -12,6 +12,7 @@ typedef enum {
> VMPORT_CMD_VMMOUSE_DATA = 39,
> VMPORT_CMD_VMMOUSE_STATUS = 40,
> VMPORT_CMD_VMMOUSE_COMMAND = 41,
> + VMPORT_CMD_GETTIMEFULL = 46,
> VMPORT_ENTRIES
> } VMPortCommand;
>
> --
> 2.20.1
