• Issue virtual timer interrupt
    Hi, I am facing an issue where I am setting virtual timer to fire at particular interval (Juno PPI4 , interrupt no 27) from EL1NS mode and when the timer interrupt happens the control is falling to EL2t...
  • Selective IRQ trap.
    Dear all, To the best of my knowledge, ARM hardware virtualization extensions can force the system to trap to the hypervisor when certain events occur such as privileged cache ops,  MMU ops, and other...
  • How to select MMU-401 TLB description format?
    Hi experts, MMU-401 TLB support for the following: — ARMv7 4KB, 2MB, and 1GB page sizes. — ARMv8 64KB and 512MB page sizes. In TRM, there is a register bit about PAGESIZE, 0:4KB, 1:64KB. So, I think user...
  • Issue with eret
    Hi, I am doing "eret" from EL2h mode and expecting that I should jump to EL1h mode but rather it is taking me to EL0t mode. I am trying to root cause the issue but not able to figure out. Any pointers...
  • Selecting hardware based on OSS driver availability for new Android Devices
    As with anything Linux and Android, device/driver selection based on versions and availability is the key to simplicity. For instance, if you're trying to select a wifi or modem module for a new Android...