diff options
| author | Jason A. Donenfeld <Jason@zx2c4.com> | 2022-07-13 14:56:17 +0300 |
|---|---|---|
| committer | Richard Weinberger <richard@nod.at> | 2022-07-18 00:41:02 +0300 |
| commit | dda520d07b95072a0b63f6c52a8eb566d08ea897 (patch) | |
| tree | e457e1200190bfd340cb32b6b7b98715996e69f8 /arch/um | |
| parent | 7ac73fbb54d99486755910eaeccb070735908907 (diff) | |
| download | linux-dda520d07b95072a0b63f6c52a8eb566d08ea897.tar.xz | |
um: add "noreboot" command line option for PANIC_TIMEOUT=-1 setups
QEMU has a -no-reboot option, which halts instead of reboots when the
guest asks to reboot. This is invaluable when used with
CONFIG_PANIC_TIMEOUT=-1 (and panic_on_warn), because it allows panics
and warnings to be caught immediately in CI. Implement this in UML too,
by way of a basic setup param.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'arch/um')
| -rw-r--r-- | arch/um/os-Linux/skas/process.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/arch/um/os-Linux/skas/process.c b/arch/um/os-Linux/skas/process.c index 87d3129e7362..0df2ebcc97c0 100644 --- a/arch/um/os-Linux/skas/process.c +++ b/arch/um/os-Linux/skas/process.c @@ -5,6 +5,7 @@ */ #include <stdlib.h> +#include <stdbool.h> #include <unistd.h> #include <sched.h> #include <errno.h> @@ -707,10 +708,24 @@ void halt_skas(void) UML_LONGJMP(&initial_jmpbuf, INIT_JMP_HALT); } +static bool noreboot; + +static int __init noreboot_cmd_param(char *str, int *add) +{ + noreboot = true; + return 0; +} + +__uml_setup("noreboot", noreboot_cmd_param, +"noreboot\n" +" Rather than rebooting, exit always, akin to QEMU's -no-reboot option.\n" +" This is useful if you're using CONFIG_PANIC_TIMEOUT in order to catch\n" +" crashes in CI\n"); + void reboot_skas(void) { block_signals_trace(); - UML_LONGJMP(&initial_jmpbuf, INIT_JMP_REBOOT); + UML_LONGJMP(&initial_jmpbuf, noreboot ? INIT_JMP_HALT : INIT_JMP_REBOOT); } void __switch_mm(struct mm_id *mm_idp) |