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PAPR v2.12 defines a new hypercall, H_WATCHDOG. The hypercall permits guest control of one or more virtual watchdog timers. The timers have millisecond granularity. The guest is terminated when a timer expires. This patch adds a watchdog driver for these timers, "pseries-wdt". pseries_wdt_probe() currently assumes the existence of only one platform device and always assigns it watchdogNumber 1. If we ever expose more than one timer to userspace we will need to devise a way to assign a distinct watchdogNumber to each platform device at device registration time. Signed-off-by: Scott Cheloha <cheloha@linux.ibm.com> Acked-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220713202335.1217647-5-cheloha@linux.ibm.com |
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| .. | ||
| convert_drivers_to_kernel_api.rst | ||
| hpwdt.rst | ||
| index.rst | ||
| mlx-wdt.rst | ||
| pcwd-watchdog.rst | ||
| watchdog-api.rst | ||
| watchdog-kernel-api.rst | ||
| watchdog-parameters.rst | ||
| watchdog-pm.rst | ||
| wdt.rst | ||