From: Adhemerval Zanella <adhemerval.zanella@linaro.org>
To: libc-alpha@sourceware.org
Subject: Re: [PATCH] AArch64: Add hp-timing.h
Date: Mon, 28 Jun 2021 10:15:11 -0300 [thread overview]
Message-ID: <bb78d90b-5ac2-7053-1f84-ff887b6d6efe@linaro.org> (raw)
In-Reply-To: <VE1PR08MB5599E0245C43B86C7983FBD383039@VE1PR08MB5599.eurprd08.prod.outlook.com>
On 28/06/2021 09:10, Wilco Dijkstra via Libc-alpha wrote:
> Hi Szabolcs,
>
>> iirc linux devs asked that it is only used in vdso so
>> that it is under the kernel's control in case there
>> are implementation issues (vdso is easy to disable
>> and on some system it got disabled for timer reasons).
>
> No, the kernel must still emulate cntvct_el0 in that case because of SBSA
> which requires that the timer is always available. This is just as easy as
> disabling vDSO - and we know this works and is surprisingly fast as I
> mentioned.
Any particular reason why you haven't enabled HP_TIMING_INLINE to 1?
next prev parent reply other threads:[~2021-06-28 13:15 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-28 10:11 Wilco Dijkstra
2021-06-28 10:20 ` Florian Weimer
2021-06-28 10:53 ` Wilco Dijkstra
2021-06-28 11:06 ` Florian Weimer
2021-06-28 11:35 ` Wilco Dijkstra
2021-06-28 11:39 ` Florian Weimer
2021-06-28 11:49 ` Szabolcs Nagy
2021-06-28 11:55 ` Adhemerval Zanella
2021-06-28 12:10 ` Wilco Dijkstra
2021-06-28 13:15 ` Adhemerval Zanella [this message]
2021-06-28 14:24 ` Wilco Dijkstra
2021-06-28 14:46 ` Adhemerval Zanella
2021-06-28 19:16 ` Wilco Dijkstra
2021-06-30 8:46 ` Szabolcs Nagy
2021-06-30 8:55 ` Florian Weimer
2021-06-30 9:33 ` Siddhesh Poyarekar
2021-07-01 10:21 ` Wilco Dijkstra
2021-07-01 13:48 ` Szabolcs Nagy
2021-07-01 15:33 ` Wilco Dijkstra
2021-07-06 11:33 ` Florian Weimer
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