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charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: aokblast X-Git-Repository: src X-Git-Refname: refs/heads/stable/15 X-Git-Reftype: branch X-Git-Commit: 8318794559cbf2332e69c56fae7308a874f39a53 Auto-Submitted: auto-generated Date: Fri, 29 May 2026 15:20:29 +0000 Message-Id: <6a19aebd.26ec0.5f4d0133@gitrepo.freebsd.org> The branch stable/15 has been updated by aokblast: URL: https://cgit.FreeBSD.org/src/commit/?id=8318794559cbf2332e69c56fae7308a874f39a53 commit 8318794559cbf2332e69c56fae7308a874f39a53 Author: ShengYi Hung AuthorDate: 2026-01-03 06:12:26 +0000 Commit: ShengYi Hung CommitDate: 2026-05-29 15:19:47 +0000 ichwd: Add manual for i6300esb watchdog Reviewed by: ziaee, mhorne Approved by: lwhsu (mentor) MFC after: 2 weeks Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D54466 (cherry picked from commit 546d925cb44f1da7efee76bfebb42df8fdbc83a8) --- share/man/man4/ichwd.4 | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) 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