diff options
| author | ShengYi Hung <aokblast@FreeBSD.org> | 2026-01-03 06:12:26 +0000 |
|---|---|---|
| committer | ShengYi Hung <aokblast@FreeBSD.org> | 2026-03-04 13:51:13 +0000 |
| commit | 546d925cb44f1da7efee76bfebb42df8fdbc83a8 (patch) | |
| tree | a8a1b48ae10c1735ab62a417fea6febe36764447 /share/man/man4 | |
| parent | 31c3cba807839a1a16e6f4bca91d530d9342b61a (diff) | |
Diffstat (limited to 'share/man/man4')
| -rw-r--r-- | share/man/man4/ichwd.4 | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/share/man/man4/ichwd.4 b/share/man/man4/ichwd.4 index cc6924f7f866..25de73778d36 100644 --- a/share/man/man4/ichwd.4 +++ b/share/man/man4/ichwd.4 @@ -23,7 +23,7 @@ .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" -.Dd August 20, 2008 +.Dd January 3, 2026 .Dt ICHWD 4 .Os .Sh NAME @@ -55,6 +55,16 @@ The ICH WDT counts down in ticks of approximately 0.6 seconds; the exact value depends on hardware quality and environmental factors. Supported watchdog intervals range from 2 to 63 ticks. .Pp +In QEMU, there is a dedicated watchdog implementation for x86 +systems based on the Intel 6300ESB controller hub. +Support for this watchdog is provided by this kernel module. +.Pp +Optionally, set the +.Va hw.i6300esbwd.x.locked=1 +.Xr sysctl 8 +to prevent users from disabling the watchdog timeout check +after it has been enabled. +.Pp Note that on some ICH-based systems, the WDT may be present but disabled, either in hardware or by the BIOS. The |