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HV: debug: Check if vUART is configured in partition mode

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If vUART is not configured in partition mode and we try to connect vm's console
through sos_console vmid, it will trigger crash of HV.

This patch check whether vUART is configured. If no, just print out "No vUART
configured for xxx" and return.

Tracked-On: #1160
Signed-off-by: Kaige Fu <kaige.fu@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
Reviewed-by: Binbin Wu <binbin.wu@intel.com>
This commit is contained in:
Kaige Fu 2018-10-22 10:58:33 +00:00 committed by wenlingz
parent 05834927cc
commit 0166ec4b71
1 changed files with 12 additions and 1 deletions
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13
hypervisor/debug/shell.c
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@ -726,8 +726,9 @@ static int shell_to_sos_console(__unused int argc, __unused char **argv)
struct vm *vm; struct vm *vm;
struct acrn_vuart *vu; struct acrn_vuart *vu;
#ifdef CONFIG_PARTITION_MODE #ifdef CONFIG_PARTITION_MODE
struct vm_description *vm_desc;
if (argc == 2U) { if (argc == 2U) {
guest_no = atoi(argv[1]); guest_no = atoi(argv[1]);
} }
@ -739,6 +740,16 @@ static int shell_to_sos_console(__unused int argc, __unused char **argv)
if (vm == NULL) { if (vm == NULL) {
return -EINVAL; return -EINVAL;
} }
#ifdef CONFIG_PARTITION_MODE
vm_desc = vm->vm_desc;
if (vm_desc != NULL && vm_desc->vm_vuart == false) {
snprintf(temp_str, TEMP_STR_SIZE, "No vUART configured for vm%d\n", guest_no);
shell_puts(temp_str);
return 0;
}
#endif
vu = vm_vuart(vm); vu = vm_vuart(vm);
/* UART is now owned by the SOS. /* UART is now owned by the SOS.
* Indicate by toggling the flag. * Indicate by toggling the flag.