| Message ID | 1472042632-12883-7-git-send-email-joao.m.martins@oracle.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
>>> On 24.08.16 at 14:43, <joao.m.martins@oracle.com> wrote: > Add TSC as another clocksource that can be used, plus > a mention to the maxcpus parameter and that it requires > being explicitly set. This belongs in the patch introducing the option. Jan
On 08/25/2016 11:38 AM, Jan Beulich wrote: >>>> On 24.08.16 at 14:43, <joao.m.martins@oracle.com> wrote: >> Add TSC as another clocksource that can be used, plus >> a mention to the maxcpus parameter and that it requires >> being explicitly set. > > This belongs in the patch introducing the option. OK, I merged this back into patch 2. Joao
diff --git a/docs/misc/xen-command-line.markdown b/docs/misc/xen-command-line.markdown index 3a250cb..210927f 100644 --- a/docs/misc/xen-command-line.markdown +++ b/docs/misc/xen-command-line.markdown @@ -264,9 +264,13 @@ minimum of 32M, subject to a suitably aligned and sized contiguous region of memory being available. ### clocksource -> `= pit | hpet | acpi` +> `= pit | hpet | acpi | tsc` If set, override Xen's default choice for the platform timer. +Having TSC as platform timer requires being explicitly set. +This is because TSC can only be safely used if CPU hotplug isn't performed on +the system. In some platforms, "maxcpus" parameter may require further +adjustment to the number of online cpus. ### cmci-threshold > `= <integer>`
Add TSC as another clocksource that can be used, plus a mention to the maxcpus parameter and that it requires being explicitly set. Signed-off-by: Joao Martins <joao.m.martins@oracle.com> --- Cc: Andrew Cooper <andrew.cooper3@citrix.com> Cc: Jan Beulich <jbeulich@suse.com> New in v3. --- docs/misc/xen-command-line.markdown | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)