Re: [PATCH v4 1/3] time: add "NOW() good" indicator

[Jan Beulich <jbeulich@suse.com>]

On 18.08.2026 17:10, Orzel, Michal wrote:
> On 30-Jun-26 16:06, Jan Beulich wrote:
>> printk_start_of_line() checks for a value of 0 right now. In order to be
>> able to have NOW() return at least monotonically increasing values, that
>> needs replacing by an explicit indicator.
>>
>> Signed-off-by: Jan Beulich <jbeulich@suse.com>
> Reviewed-by: Michal Orzel <michal.orzel@amd.com>

Thanks.

>> ---
>> Arm and RISC-V may want to consider whether their initial get_cycles()
>> can't be moved yet earlier, such that the indicator also can be set
>> yet earlier.
> On Arm, get_cycles() just reads a system register and it could be moved earlier.
> That said, is there any rule as to what should actually be considered a start of
> time (i.e. the boot_count value)?

Whatever NOW() uses as the "bias", I think. That looks to be boot_count on
Arm, yes.

Jan