I am using Qemu with -

    qemu-system-arm \
        -M mps3-an524 \
        -cpu cortex-m33 \
        -smp 2 \
        -nographic \
        -kernel firmware.elf

It is runs perfectly. UART works perfectly. But when I try to access SysTick register, I get this error - qemu-system-arm: warning: Blocked re-entrant IO on MemoryRegion: v7m_systick at addr: 0x0. Does it mean I can't access SysTick in Qemu? or some other process in Qemu is already trying to access this register? Is there any way to fix this?

Btw I just do this in code

volatile uint32_t *systick_ctrl = (volatile uint32_t *)0xE002E010;