How MMU work In ARMv8 to prevent Access to EL1 virtual address from EL0

Hello, I got a little problem in ARMv8's MMU. Obviously, when we access the kernel virtual address in application such as : unsigned long *p = 0xffffffff28008000; unsigned long x = *p; *p =...
How MMU work In ARMv8 to prevent Access to EL1 virtual address from EL0

Hello, I got a little problem in ARMv8's MMU. Obviously, when we access the kernel virtual address in application such as : unsigned long *p = 0xffffffff28008000; unsigned long x = *p; *p =...
how does ARMv8 switch to run application(EL0) from kernel(EL1)?

hi experts, I am studying the ARMv8 exception levels. I have a question about ELs. EL1 is described to run OS kernel and EL0 is application level. The exception levels change only occur on exception...
how does ARMv8 switch to run application(EL0) from kernel(EL1)?

hi experts, I am studying the ARMv8 exception levels. I have a question about ELs. EL1 is described to run OS kernel and EL0 is application level. The exception levels change only occur on exception...
Armv8-A A55 baremetal boot exception level from EL1 to EL0

I was studying the A55 baremetal boot. I changed the execution level from EL3 to EL2 then to EL1 can work very well,but EL1 can not change to EL0.I use the spsr_eln and elr_eln register with the instrcuction...