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Message-ID: <3527e98a-faab-2360-f521-aa04bbe92edf@linaro.org>
Date: Thu, 12 Nov 2020 10:56:17 +0100
From: Daniel Lezcano <daniel.lezcano@...aro.org>
To: Wei Liu <wei.liu@...nel.org>,
Linux on Hyper-V List <linux-hyperv@...r.kernel.org>
Cc: virtualization@...ts.linux-foundation.org,
Linux Kernel List <linux-kernel@...r.kernel.org>,
Michael Kelley <mikelley@...rosoft.com>,
Vineeth Pillai <viremana@...ux.microsoft.com>,
Sunil Muthuswamy <sunilmut@...rosoft.com>,
Nuno Das Neves <nunodasneves@...ux.microsoft.com>,
"K. Y. Srinivasan" <kys@...rosoft.com>,
Haiyang Zhang <haiyangz@...rosoft.com>,
Stephen Hemminger <sthemmin@...rosoft.com>,
Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH v2 05/17] clocksource/hyperv: use MSR-based access if
running as root
On 05/11/2020 17:58, Wei Liu wrote:
> Signed-off-by: Wei Liu <wei.liu@...nel.org>
> ---
I would like to apply this patch but the changelog is too short (one line).
Please add a small paragraph (no need to resend just answer here, I will
amend the log myself.
> drivers/clocksource/hyperv_timer.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/drivers/clocksource/hyperv_timer.c b/drivers/clocksource/hyperv_timer.c
> index ba04cb381cd3..269a691bd2c4 100644
> --- a/drivers/clocksource/hyperv_timer.c
> +++ b/drivers/clocksource/hyperv_timer.c
> @@ -426,6 +426,9 @@ static bool __init hv_init_tsc_clocksource(void)
> if (!(ms_hyperv.features & HV_MSR_REFERENCE_TSC_AVAILABLE))
> return false;
>
> + if (hv_root_partition)
> + return false;
> +
> hv_read_reference_counter = read_hv_clock_tsc;
> phys_addr = virt_to_phys(hv_get_tsc_page());
>
>
--
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