Opened 9 years ago
Closed 7 years ago
#11873 closed bug (no change required)
"Time running" doesn't reset over restart under virtualbox.
| Reported by: | jstressman | Owned by: | nobody |
|---|---|---|---|
| Priority: | normal | Milestone: | R1 |
| Component: | System/Kernel | Version: | R1/Development |
| Keywords: | Cc: | ||
| Blocked By: | Blocking: | ||
| Platform: | All |
Description
"Time running" (in "About Haiku") doesn't reset over "restart" under virtualbox, but it does reset if you shutdown and then start up again.
Tested in hrev48828 and alpha4.1.
I'd test in alpha3, but it locks up part way through booting.
Change History (4)
comment:1 by , 9 years ago
comment:2 by , 7 years ago
| Component: | - General → System/Kernel |
|---|
Probably kernel should somehow detect it and reset uptime?
comment:3 by , 7 years ago
This is just a bug in VirtualBox; Haiku uses the rdtsc instruction to compute the system time on x86. According to the official Intel documentation, this counter should be reset when the CPU is reset (chapter 17.15 in Intel® 64 and IA-32 Architectures
Software Developer’s Manual
Volume 3 from September 2016):
"The time-stamp counter (as implemented in the P6 family, Pentium, Pentium M, Pentium 4, Intel Xeon, Intel Core Solo and Intel Core Duo processors and later processors) is a 64-bit counter that is set to 0 following a RESET of the processor."
While we could work around it by means of resetting the TSC manually, I don't think it's worth it. I'll report the bug to the VirtualBox project.
comment:4 by , 7 years ago
| Resolution: | → no change required |
|---|---|
| Status: | new → closed |
Tracked as ticket #16643 in the VirtualBox bug tracker.
Working on Vmware but then restart in wmvare does a powerof and start.