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a6fe51debd
We need to deny accesses from SOS to the HV owned UART device, otherwise
SOS could have direct access to this physical device and mess up the HV
console.
If ACRN debug UART is configured as PIO based, For example,
CONFIG_SERIAL_PIO_BASE is generated from acrn-config tool, or the UART
config is overwritten by hypervisor parameter "uart=port@<port address>",
it could run into problem if ACRN doesn't emulate this UART PIO port
to SOS. For example:
- none of the ACRN emulated vUART devices has same PIO port with the
port of the debug UART device.
- ACRN emulates PCI vUART for SOS (configure "console_vuart" with
PCI_VUART in the scenario configuration)
This patch fixes the above issue by masking PIO accesses from SOS.
deny_hv_owned_devices() is moved after setup_io_bitmap() where
vm->arch_vm.io_bitmap is initialized.
Commit
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|---|---|---|
| .. | ||
| console.c | ||
| dbg_cmd.c | ||
| dump.c | ||
| hypercall.c | ||
| logmsg.c | ||
| Makefile | ||
| npk_log.c | ||
| printf.c | ||
| profiling.c | ||
| sbuf.c | ||
| shell_priv.h | ||
| shell.c | ||
| string.c | ||
| trace.c | ||
| uart16550.c | ||